mlm82s mixer manual

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MLM82S MIC & LINE MIXER CONTENTS (in order of appearance) Important Safety Instructions MLM82S Manual MLM82S Data Sheet Sound System Interconnection Rane Professional Audio Products Schematics Warranty Declaration of Conformity 22356 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6

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Page 1: MLM82S Mixer Manual

MLM82SMIC & LINE MIXER

CONTENTS (in order of appearance)

Important Safety InstructionsMLM82S ManualMLM82S Data SheetSound System InterconnectionRane Professional Audio ProductsSchematicsWarrantyDeclaration of Conformity

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Page 2: MLM82S Mixer Manual

ATTENTION: RISQUE DE CHOCS ELECTRIQUE - NE PAS OUVRIR

RISK OF ELECTRIC SHOCKDO NOT OPEN

CAUTION

To reduce the risk of electrical shock, do not open the unit. No user serviceable parts inside. Refer servicing to qualified service personnel.

The symbols shown below are internationally accepted symbols that warn of potential hazards with electrical products.

This symbol indicates that a dangerous voltage constituting a risk of electric shock is present within this unit.

This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit.

WARNING

IMPORTANT SAFETY INSTRUCTIONS1. Read these instructions.2. Keep these instructions.3. Heed all warnings.4. Follow all instructions.5. Do not use this apparatus near water.6. Clean only with a dry cloth.7. Do not block any ventilation openings. Install in accordance with manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, registers, stoves, or other apparatus (including amplifiers) that produce heat.9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A

grounding-type plug has two blades and a third grounding prong. The wide blade or third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord and plug from being walked on or pinched particularly at plugs, convenience receptacles, and the point where it exits from the apparatus.

11. Only use attachments and accessories specified by Rane.12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution

when moving the cart/apparatus combination to avoid injury from tip-over. 13. Unplug this apparatus during lightning storms or when unused for long periods of time.14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply

cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15. The plug on the power cord is the AC mains disconnect device and must remain readily operable. To completely disconnect this apparatus from the AC mains, disconnect the power supply cord plug from the AC receptacle.

16. This apparatus shall be connected to a mains socket outlet with a protective earthing connection.17. When permanently connected, an all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the

electrical installation of the building. 18. If rackmounting, provide adequate ventilation. Equipment may be located above or below this apparatus, but some equipment (like large power

amplifiers) may cause an unacceptable amount of hum or may generate too much heat and degrade the performance of this apparatus.19. This apparatus may be installed in an industry standard equipment rack. Use screws through all mounting holes to provide the best support.WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Apparatus shall not be exposed to dripping

or splashing and no objects filled with liquids, such as vases, shall be placed on the apparatus.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and receiver.• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.• Consult the dealer or an experienced radio/TV technician for help.CAUTION: Changes or modifications not expressly approved by Rane Corporation could void the user's authority to operate the equipment.

CAN ICES-3 (B)/NMB-3(B)

WARNING: This product may contain chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.

Page 3: MLM82S Mixer Manual

ATTENTION: RISQUE DE CHOCS ELECTRIQUE - NE PAS OUVRIR

RISK OF ELECTRIC SHOCKDO NOT OPEN

CAUTION

Afin d’éviter tout risque de choc électrique, ne pas ouvrir l’appareil. Aucune pièce ne peut être changée par l’utilisateur. Contactez un SAV qualifié pour toute intervention.

Les symboles ci-dessous sont reconnus internationalement comme prévenant tout risque électrique.

Ce symbole indique que cette unité utilise un voltage élevé constituant un risque de chocélectrique.

Ce symbole indique la présence d’instructions d’utilisation et de maintenance importantes dans le document fourni.

ATTENTION

INSTRUCTIONS DE SÉCURITÉ1. Lisez ces instructions.2. Gardez précieusement ces instructions.3. Respectez les avertissements.4. Suivez toutes les instructions.5. Ne pas utiliser près d’une source d’eau.6. Ne nettoyer qu’avec un chiffon doux.7. N’obstruer aucune évacuation d’air. Effectuez l’installation en suivant les instructions du fabricant.8. Ne pas disposer près d’une source de chaleur, c-à-d tout appareil produisant de la chaleur sans exception.9. Ne pas modifier le cordon d’alimentation. Un cordon polarisé possède 2 lames, l’une plus large que l’autre. Un cordon avec tresse de masse possède

2 lames plus une 3è pour la terre. La lame large ou la tresse de masse assurent votre sécurité. Si le cordon fourni ne correspond pas à votre prise, contactez votre électricien.

10. Faites en sorte que le cordon ne soit pas piétiné, ni au niveau du fil, ni au niveau de ses broches, ni au niveau des connecteurs de vos appareils.11. N’utilisez que des accessoires recommandés par Rane.12. N’utilisez que les éléments de transport, stands, pieds ou tables spécifiés par le fabricant ou vendu avec l’appareil. Quand vous utlisez une valise de

transport, prenez soin de vous déplacer avec cet équipement avec prudence afin d’éviter tout risque de blessure.13. Débranchez cet appareil pendant un orage ou si vous ne l’utilisez pas pendant un certain temps.14. Adressez-vous à du personnel qualifié pour tout service après vente. Celui-ci est nécessaire dans n’importe quel cas où l’appareil est abimé : si le

cordon ou les fiches sont endommagés, si du liquide a été renversé ou si des objets sont tombés sur l’appareil, si celui-ci a été exposé à la pluie ou l’humidité, s’il ne fonctionne pas correctement ou est tombé.

15. La fiche du cordon d’alimentation sert à brancher le courant alternatif AC et doit absolument rester accessible. Pour déconnecter totalement l’appareil du secteur, débranchez le câble d’alimentation de la prise secteur.

16. Cet appareil doit être branché à une prise terre avec protection.17. Quand il est branché de manière permanente, un disjoncteur tripolaire normalisé doit être incorporé dans l’installation électrique de l’immeuble.18. En cas de montage en rack, laissez un espace suffisant pour la ventilation. Vous pouvez disposer d’autres appareils au-dessus ou en-dessous de celui-

ci, mais certains (tels que de gros amplificateurs) peuvent provoquer un buzz ou générer trop de chaleur au risque d’endommager votre appareil et dégrader ses performances.

19. Cet appareil peut-être installé dans une baie standard ou un chassis normalisé pour un montage en rack. Visser chaque trou de chaque oreille de rack pour une meilleure fixation et sécurité.

ATTENTION: afin d’éviter tout risque de feu ou de choc électrique, gardez cet appareil éloigné de toute source d’humidité et d’éclaboussures quelles qu’elles soient. L’appareil doit également être éloigné de tout objet possédant du liquide (boisson en bouteilles, vases,…).

REMARQUE: Cet équipement a été testé et approuvé conforme aux limites pour un appareil numérique de classe B, conformément au chapitre 15 des règles de la FCC. Ces limites sont établis pour fournir une protection raisonnable contre tout risque d’interférences et peuvent provoquer une énergie de radiofréquence s'il n'est pas installé et utilisé conformément aux instructions, peut également provoquer des interférences aux niveaux des équipements de communication. Cependant, il n'existe aucune garantie que de telles interférences ne se produiront pas dans une installation particulière. Si cet équipement provoque des interférences en réception radio ou télévision, ceci peut être detecté en mettant l'équipement sous/hors tension, l'utilisateur est encouragé à essayer de corriger cette interférence par une ou plusieurs des mesures suivantes:• Réorienter ou déplacer l'antenne de réception.• Augmenter la distance entre l'équipement et le récepteur.• Connecter l'équipement à une sortie sur un circuit différent de celui sur lequel le récepteur est branché.• Consulter un revendeur ou un technicien radio / TV expérimenté.ATTENTION: Les changements ou modifications non expressément approuvés par Rane Corporation peuvent annuler l'autorité de l'utilisateur à manipuler cet équipement et rendre ainsi nulles toutes les conditions de garantie.

CAN ICES-3 (B)/NMB-3(B)Cartons et papier à recycler.

Page 4: MLM82S Mixer Manual
Page 5: MLM82S Mixer Manual

Manual-1

MLM82SMIC & LINE MIXER

OPERATORS MANUAL

MLM82S CONNECTIONWhen connecting the MLM82S to other components in your system for the first time, leave the power cord for last. This gives you a chance to make mistakes and correct them without damage to your fragile speakers, ears and nerves.

MIC/LINE INPUTS 1-4The four XLR jacks provided on the MLM82S are balanced MIC/LINE inputs. They will also accept unbalanced connectors. Use only shielded cable for inputs. For best noise rejection use two-conductor-plus-shielded wire, even for unbalanced operation. Connect the shield at both ends to help insure proper grounding. See the Sound System Interconnection RaneNote included with this manual for all cable adaptations. Rane follows the AES recommended practice of pin 2 positive, pin 3 negative, and pin 1 to shield. Switch any input connected to a microphone to the MIC position (out) using the associated switches on the rear panel. When connecting line level signals, switch the input to the LINE position (in). A single phantom power switch is provided for the four MIC inputs. If LINE is selected, Phantom Power is disabled for that input.

QUICK STARTThis section is provided as a convenience for those in a rush. If you are experienced with this unit or other Rane products, these few words will refresh your memory.

INPUTS 1 through 4 may be microphone or line level. The choice between the two is made by setting the LINE push buttons on the REAR of the unit next to the MIC/LINE INPUT JACKS. Each microphone input may be assigned to A, B or A+B outputs using the front panel ASSIGN switches.

INPUTS 5 through 8 are stereo line inputs which may be set to mono using the recessed MONO switches located on the front panel.

Internal switches allow setting output signal levels for MIC or LINE. The factory default setting is LINE. If the MLM82S is connected directly to a power amplifier, equalizer or recorder input, choose LINE level. If the MLM82S is connected to a microphone jack of an existing sound system, choose MIC level.

Once Inputs, Outputs, and power are properly connected, with the OUTPUT LEVELS counterclockwise (off ), set the Input LEVELS as high as possible without causing the SIG/OL indicators to blink red except during extreme signal peaks. Now slowly raise the OUTPUT LEVELS as desired.

STEREO LINE INPUTS 5-8The ¼" connectors are line-level balanced/unbalanced Inputs. If the MLM82S is to be used with unbalanced sources, consult the Sound System Interconnection RaneNote included with this manual for proper wiring. Stereo Inputs use both A and B jacks at each INPUT. INPUTS 5 through 8 also serve as mono Inputs when the front panel MONO switch is engaged.

OUTPUTSThe MLM82S’s OUTPUTS are balanced. The same wiring conventions as the XLR Inputs apply. The type of device follow-ing the MLM82S must be considered when setting the internal Output Level switch. Choose between LINE (0 dB) or MIC (-40 dB) output, the factory setting is LINE. If the MLM82S is con-nected directly to a power amplifier input, choose LINE level. If the MLM82S is connected to a microphone jack on an existing sound system, choose MIC level. For unbalanced OUTPUT connections do not tie pin 3 (i.e. “–”) to ground.

WEAR PARTS: This product contains no wear parts.

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MLM82SMIC / LINE MIXER

POWER

OUTPUTS1

MONO MIC / LINE INPUTS5

STEREO LINE INPUTS

OLA+B

ASSIGNMONO

SIG /OL

2

A+BASSIGNSIG /OL

3

A+BASSIGNSIG /OL

4 6

MONO

7

MONO

8

MONO

A

OL

B

A+BASSIGNSIG /OL LEVELLEVELLEVELLEVELLEVELLEVELLEVELLEVELLEVELLEVEL

Page 6: MLM82S Mixer Manual

Manual-2

FRONT PANEL DESCRIPTION

1 SIGnal present/OverLoad LED. This bi-color LED lights green for a -30 dBu signal, and turns red when the Input is within 3 dB of clipping.

2 MONO MIC/LINE INPUT LEVEL controls 1-4 determine the MIC/LINE preamp gain and mix level to be assigned to the A, A+B, B Outputs.

3 ASSIGN switches determine between the A, A+B or B Outputs for each MIC/LINE input. 4 STEREO LINE INPUT LEVEL controls 5-8 determine the amount of stereo or mono line Input routed to the Outputs.

5 MONO switch mixes the A and B sides of each STEREO LINE input together. When active, the associated LED lights, and the A and B Inputs for that channel have exactly the same level. 6 OUTPUT OverLoad LED illuminates within 3 dB of an approaching overload condition. To avoid this, the associated OUT-

PUT LEVEL control may be decreased, or the problem-causing individual Input Level may be lowered. 7 A and B OUTPUT LEVEL controls set the Output Level for A and B outputs. 8 POWER LED is lit whenever adequate power is applied to the unit.

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MLM82SMIC / LINE MIXER

POWER

OUTPUTS1

MONO MIC / LINE INPUTS5

STEREO LINE INPUTS

OLA+B

ASSIGNMONO

SIG /OL

2

A+BASSIGNSIG /OL

3

A+BASSIGNSIG /OL

4 6

MONO

7

MONO

8

MONO

A

OL

B

A+BASSIGNSIG /OL LEVELLEVELLEVELLEVELLEVELLEVELLEVELLEVELLEVELLEVEL

2 3 4 51 7 86

Page 7: MLM82S Mixer Manual

Manual-3

REAR PANEL DESCRIPTION

1 MIC/LINE INPUTS 1 through 4. These XLRs connect either balanced Microphone or Line signals, depending on the LINE switch setting (see 3). Rane adheres to the international and U.S. standard for balanced pin configurations: Pin 1 is chassis ground (neutral), pin 2 is positive (+), and pin 3 is negative (–).

2 PHANTOM POWER switch applies 15 V Phantom Power to any Inputs 1-4 that are set for MIC Input.

3 LINE Input selectors switch the sensitivity and input impedance for either a microphone or line level input. If LINE is chosen, Phantom Power is deactivated for that Input.

4 ¼" LINE INPUTS. These stereo pairs of balanced inputs accommodate stereo line-level signals. These TRS (Tip-Ring-Sleeve) ¼" jacks handle either balanced or unbalanced signals. In most cases an unbalanced signal may use a mono ¼" plug (Tip-Sleeve). See the Sound System Interconnection RaneNote included with this manual for proper connection.

5 A and B OUTPUT jacks. These balanced XLR’s provide the A and B mixed output. INTERNAL OUTPUT LEVEL switches allow setting the output level for MIC or LINE level. Pin connections are the same as above in 1.

6 Power connector: The internal universal switching power supply operates on any AC mains 100 to 240 VAC, 50 or 60 Hz (most places in the world). All that is required when traveling is the appropriate IEC line cord.

B LINE

RANE CORPORATIONA

LINE LINE LINE

15VPHANTOM

POWER

MLM82S

5

B

A

6

B

A

7

B

A

8AB

OUTPUTS

134 2

LINE INPUTS MIC / LINE INPUTS

BALANCED: PIN 3 = (–), PIN 2 = (+), PIN 1 = (G)CLASS 2 WIRING

BALANCED: PIN 3 = (–), PIN 2 = (+), PIN 1 = (G), CLASS 2 WIRING

100-240 V50/60 Hz 7 WATTS

COMMERCIALAUDIO

EQUIPMENT24TJ

R

6 23

5 14

Page 8: MLM82S Mixer Manual

Manual-4

©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 TEL 425-355-6000 FAX 425-347-7757 WEB rane.com

OPERATING INSTRUCTIONS

MONO MICROPHONE/LINE LEVEL INPUTS 1-4The microphone preamps in the MLM82S have a combination gain trim and Level control. The LEVEL control adjusts both the input dynamic range and mix level. There is no need for the typical independent gain trim control found on most mixers. The PHANTOM POWER switch activates 15 volt Phantom Power for all Inputs selected for microphone use. With LINE selected, Phantom Power is defeated only in that Input. 15 volts is suffi-cient power for all but the most esoteric condenser microphones. If in doubt, check the manufacturer’s microphone specs.

SIGNAL PRESENT/OVERLOAD INDICATORSThe MLM82S has four bi-color indicators for Signal Present/Overload (green/red). Green indication occurs when there is a signal present above -30 dBu. This lamp should be glowing green when signal is present. If this lamp is off, check these possibili-ties:A. The Input may not be connected.B. There is little or no signal present at the moment.C. There is a Mic connected to a channel switched to LINE.D. The Mic needs Phantom Power (See Rear Panel, 2).E. The LEVEL control needs to be increased (clockwise).F. The cable is not wired properly (See the Sound System Inter-

connection RaneNote).

A red glowing LED indicates that the levels are so high that distortion due to clipping is occurring or imminent.

Check these conditions:A. The LEVEL control may be turned too high.B. The Output of the preceding device may need to be reduced.C. The Input may be switched to MIC with a line-level source.

Switch the Input to LINE.

STEREO LINE INPUTS 5 through 8 do not have overload indicators. Because 12 dB of gain is added after the STEREO LINE INPUT LEVEL controls, it is possible to overload a line input without an overload indication. The A and B OUTPUT OL indicators can overload from the Line Inputs if the OUT-PUT LEVEL controls are set to 10. Although a single Input may be at unity gain, multiple active Inputs mixed together can cause an overload. If the OL indicators illuminate, just turn down the OUTPUT LEVELS until the overload stops—mix ratios will not change.

STEREO LINE LEVEL INPUTS 5-8The STEREO LINE INPUT LEVEL controls adjust both A and B Inputs equally. Use the OUTPUT LEVEL controls together for overall output adjustment, or separately to control balance.

A single mono input may be used for the A and/or B inputs. Any mono source connected to A will go to the A output. Any mono source connected to the B input will go to the B output. If you wish one or two mono sources to go to both A and B outputs, press the MONO switch. If you wish to mono a single stereo source and have it present in A and B outputs, press the mono switch. STEREO LINE INPUTS 5-8 may each be inde-pendently set for mono operation.

Page 9: MLM82S Mixer Manual

MLM82SMIC & LINE MIXER

Data Sheet-1

General DescriptionThe Rane MLM82S features four balanced, studio grade, Mono Mic/Line Inputs with XLR jacks and 15 VDC phantom power. Each of the four Mic/Line Inputs may be assigned to A, A+B or B Outputs. Independent Level/Gain Trim controls and Signal/Overload indicators are provided for each Mic/Line Input. The Phantom Power switch and the Mic/Line switches are located on the rear panel. Phantom power is removed from any Input set for Line operation.

The MLM82S also features four stereo line level inputs with 12 dB of line gain. Each Stereo Line Input features a recessed Mono switch with indicator and Level control. These Inputs may also be used with four Mono A Inputs and four Mono B Inputs. You get the picture… this mixer is very versatile.

A and B Output Level controls set the master mix level independently for A and B Outputs. The mix amplifiers feature independent overload indicators. To correct any overload condi-tion, the entire mix can be reduced and/or individual Input Lev-els adjusted. A and B mix Outputs each have an internal switch for padding the output signal to Mic level. The factory default is Line level.

Features

• Four balanced Mic/Line Inputs (XLR) with…

• 15V Phantom Power

• Bi-Color Signal Present/Overload indicators

• Trimless Mic Stage Preamplifiers

• A / A+B / B Assign Switch

• Four Balanced Stereo Line Inputs (TRS) with…

• Independent Mono switch

• 12 dB of Line Gain

• Two balanced Outputs (XLR) with…

• Independent Overload indicators

• Independent Level controls

• Internal Pad for Mic level output

• Internal Universal Power Supply (100-240 VAC)

DATA SHEET

ApplicationsWith features like Mic/Line A / A+B / B Assign switches, inde-pendent Stereo Line Input Mono switches and additional line gain, the MLM82S is now one of the most versatile mixers in its class. It is ideal for installations requiring ease of use, compact size, low cost, high performance and security. Applications in-clude, but are not limited to, hotels, churches, conference rooms, schools and rental sound systems. The studio-grade specifications of the MLM82S allow many other applications such as sub-mixing, recording and post-production.

The Mic/Line Assign switches and independent Mono switches for each of the Stereo Line Inputs make the MLM82S a true, dual zone capable mixer, i.e., the Outputs may be thought of as two independent zones or a single stereo zone.

Page 10: MLM82S Mixer Manual

MLM82SMIC & LINE MIXER

Data Sheet-2

Features and Specifications

Parameter Specification Limit Units Conditions/CommentsInputs: Type Active Balanced..........Mic Connectors XLR pin 2 = (+)..........Stereo Line Connectors ¼" TRS tip=(+), ring=(–), sleeve=GNDMic / Line Input Impedance 1k / 96k 1% Ω Balanced 500+500 / 48k + 48k..........Mic Gain Range off to +60 ±1.5 dB..........Line Gain Range off to +20 ±1.5 dB..........Equivalent Input Noise -128 typ dBu 20 kHz bandwidth, 150 Ω termination..........THD & Noise 0.02 max % Gain=40 dB, +4 dBu @ 1 kHz, 80 Hz BW..........Frequency Response 30 Hz - 35 kHz -3 dB..........Maximum Input 11.9 typ dBu Minimum Gain (3 Vrms) .....@ Mic Level 38.6 typ dBu Maximum Gain (9.1 mVrms)Stereo Line Input Impedance 20k min Ω..........Gain Range off to +12 ±1 dB..........Signal-To-Noise Ratio 90 typ dB Unity gain, output @ +4 dBu, 22 kHz BW..........Frequency Response 10 Hz - 35 kHz -3 dB..........THD & Noise 0.007 max % +4 dBu at 1 kHz, 80 kHz BWOutputs: Type Active Balanced..........Connectors XLR..........Impedance 200/100 1% Ω Line level Out/Mic level Out ..........Gain Range Off to +6 ±2 dB..........Drive Level +24 dBu 600 Ω load balancedPhantom Power +15 4% VDCOutput Cable Length 1500 typ feet Line-level, <50 pF per footCrosstalk -75 @ 1 kHz max dB re +4 dBu any channel to any channelPower Supply Requirement 100 to 240 10% VAC 50/60 Hz, 7WUnit: Conformity CE, FCC, CULUSUnit: Construction All Steel..........Size 1.75"H x 19"W x 5.3"D (1U) (4.4 cm x 48.3 cm x 13.3 cm)..........Weight 4 lb (3 kg)Shipping: Size 4.25" x 20.3" x 13.75" (11 cm x 52 cm x 35 cm)..........Weight 8 lb (5 kg)

Note: 0 dBu=0.775 Vrms

Page 11: MLM82S Mixer Manual

MLM82SMIC & LINE MIXER

Data Sheet-3

1

2 3+-

1

23

1

23+

+–

1

2 3+-

1

2 3+-

1

2 3+-

+15V

MONO

MONO

MONO

MONO

OL

OL

40 dBPAD

40 dBPAD

1231 2 3

LINE MIX

LINE MIX

MASTER MIX

MASTER MIX

PHANTOM POWER

INPUT 2

INPUT 1

INPUT 3

INPUT 4

INPUT 5

INPUT 6

INPUT 7

INPUT 8

OUTPUT A

OUTPUT B

LEVEL

LEVEL

LEVEL

LEVEL

LEVEL

LEVEL

LEVEL

LEVEL

40 dBPAD

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

RFIFILTER

40 dBPAD

40 dBPAD

40 dBPAD

A / A+B / B

A / A+B / B

A / A+B / B

A / A+B / B

SENSEOL

SENSEOL

SENSEOL

SENSEOL

GRNSIG

REDOL

GRNSIG

REDOL

GRNSIG

REDOL

GRNSIG

REDOL

12 dB

12 dB

A

BAL/UNBAL

LINE

B

A

BAL/UNBAL

LINE

B

A

BAL/UNBAL

LINE

B

A

BAL/UNBAL

LINE

B

Block Diagram

Page 12: MLM82S Mixer Manual

MLM82SMIC & LINE MIXER

Data Sheet-4 All features & specifications subject to change without notice. 4-2016

©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 USA TEL 425-355-6000 FAX 425-347-7757 WEB rane.com

Rear Panel

Architectural SpecificationsThe mixer shall have four studio-grade mono mic/line inputs each with XLR input jack, 15 V phantom power, line pad, A / A+B / B mix assign switch, level control and signal/overload indicator. A single switch shall make phantom power available to all four microphone inputs. Phantom power shall be removed automatically from any mic/line input set for line input. For ease of use, mic/line preamplifiers shall use a single control for input gain trim and mix level.

The mixer shall feature four stereo line inputs each with ¼" TRS input jack, level control and pre-level control mono switch. The inputs shall provide for dual mono operation with four mono signals available for the A mix and four mono inputs avail-able for the B mix.

A and B mix outputs shall feature overload indicators, independent A/B level controls, internally selected 40 dB pad for microphone level output and XLR output jacks.

Security features shall include placement of the phantom power and line switches on the rear panel, recessed assign switch-es, internally located pad switch for selecting line or microphone output level and recessed stereo line input mono switches with position indicators.

The unit shall be capable of operation by means of its own built-in universal power supply operating at 100-240 VAC and meet CE requirements. The unit shall be UL and cUL listed. The unit shall be constructed entirely from cold-rolled steel, and mount into a standard EIA relay rack occupying 1 rack-space.

The unit shall be a Rane MLM82S Mic & Line Mixer.

IN 1 A / A+B / B

STEREO /MONO

IN 2IN 3IN 4

OUT “A”MIC / LINE

OUT “B”

MLM82S

“B”CONFERENCE

SEND

“A”LOCAL

AMPLIFIER

MIC1

MIC2

MIC3

MIC4

LR

LAPTOP

LR

MP3

LR

DVR

LR

DVD

Application Diagram

Page 13: MLM82S Mixer Manual

Interconnection-1

IntroductionThis note, originally written in 1985, continues to be one of our most useful references. It’s popularity stems from the continual and perpetual difficulty of hooking up audio equipment without suffering through all sorts of bizarre noises, hums, buzzes, whistles, etc.— not to mention the extreme financial, physical and psychological price. As tech-nology progresses it is inevitable that electronic equipment and its wiring should be subject to constant improvement. Many things have improved in the audio industry since 1985, but unfortunately wiring isn’t one of them. However, finally the Audio Engineering Society (AES) has issued a standards document for interconnection of pro audio equip-ment. It is AES48, titled “AES48-2005: AES standard on interconnections —Grounding and EMC practices — Shields of connectors in audio equipment containing active circuitry.”

Rane’s policy is to accommodate rather than dictate. However, this document contains suggestions for external wiring changes that should ideally only be implemented by trained technical personnel. Safety regulations require that all original grounding means provided from the factory be left intact for safe operation. No guarantee of responsibility for incidental or consequential damages can be provided. (In other words, don’t modify cables, or try your own version of grounding unless you really understand exactly what type of output and input you have to connect.)

Rane Technical Staff

RaneNote 110© 1985, 1995, 2006, 2007, 2011, 2015 Rane Corporation

Sound System Interconnection

• Cause & prevention of ground loops

• Interfacing balanced & unbalanced

• Proper pin connections and wiring

• Chassis ground vs. signal ground

• Ground lift switches

RaneNoteSOUND SYSTEM INTERCONNECTION

Page 14: MLM82S Mixer Manual

Interconnection-2

Ground LoopsAlmost all cases of noise can be traced directly to ground loops, grounding or lack thereof. It is important to under-stand the mechanism that causes grounding noise in order to effectively eliminate it. Each component of a sound system produces its own ground internally. This ground is usually called the audio signal ground. Connecting devices together with the interconnecting cables can tie the signal grounds of the two units together in one place through the conductors in the cable. Ground loops occur when the grounds of the two units are also tied together in another place: via the third wire in the line cord, by tying the metal chassis together through the rack rails, etc. These situations create a circuit through which current may flow in a closed “loop” from one unit’s ground out to a second unit and back to the first. It is not simply the presence of this current that creates the hum—it is when this current flows through a unit’s audio signal ground that creates the hum. In fact, even without a ground loop, a little noise current always flows through every interconnecting cable (i.e., it is impossible to eliminate these currents entirely). The mere presence of this ground loop current is no cause for alarm if your system uses properly implemented and completely balanced inter-connects, which are excellent at rejecting ground loop and other noise currents. Balanced interconnect was developed to be immune to these noise currents, which can never be entirely eliminated. What makes a ground loop current an-noying is when the audio signal is affected. Unfortunately, many manufacturers of balanced audio equipment design the internal grounding system improperly, thus creating bal-anced equipment that is not immune to the cabling’s noise currents. This is one reason for the bad reputation some-times given to balanced interconnect.

A second reason for balanced interconnect’s bad reputa-tion comes from those who think connecting unbalanced equipment into “superior” balanced equipment should improve things. Sorry. Balanced interconnect is not compat-

ible with unbalanced. The small physical nature and short cable runs of completely unbalanced systems (home audio) also contain these ground loop noise currents. However, the currents in unbalanced systems never get large enough to affect the audio to the point where it is a nuisance. Mixing balanced and unbalanced equipment, however, is an entirely different story, since balanced and unbalanced interconnect are truly not compatible. The rest of this note shows several recommended implementations for all of these interconnec-tion schemes.

The potential or voltage which pushes these noise cur-rents through the circuit is developed between the indepen-dent grounds of the two or more units in the system. The impedance of this circuit is low, and even though the voltage is low, the current is high, thanks to Mr. Ohm, without whose help we wouldn’t have these problems. It would take a very high resolution ohm meter to measure the impedance of the steel chassis or the rack rails. We’re talking thou-sandths of an ohm. So trying to measure this stuff won’t necessarily help you. We just thought we’d warn you.

The Absolute Best Right Way To Do ItThe method specified by AES48 is to use balanced lines and tie the cable shield to the metal chassis (right where it enters the chassis) at both ends of the cable.

A balanced line requires three separate conductors, two of which are signal (+ and –) and one shield (see Figure 1a). The shield serves to guard the sensitive audio lines from interference. Only by using balanced line interconnects can you guarantee (yes, guarantee) hum-free results. Always use twisted pair cable. Chassis tying the shield at each end also guarantees the best possible protection from RFI [radio fre-quency interference] and other noises [neon signs, lighting dimmers].

Neil Muncy1, an electroacoustic consultant and seasoned veteran of years of successful system design, chairs the AES

Figure 1a. The right way to do it.

+

G

T

RS

REDBLACK 2-CONDUCTOR SHIELDED CABLE

2-CONDUCTOR SHIELDED CABLE

2-CONDUCTOR SHIELDED CABLE

SHIELD

REDBLACKSHIELD

REDBLACKSHIELD

REDBLACK

SHIELD

REDBLACK

SHIELD

REDBLACK

SHIELD

CHASSISGROUND

CHASSISGROUND

SIGNALGROUND

SR

T

G

+

BALANCED OUTPUTS BALANCED INPUTS

MALE FEMALEMALE FEMALE

1

23C

132 2

C 31

2

13

Page 15: MLM82S Mixer Manual

Interconnection-3

Standards Committee (SC-05-05) working on this subject. He tirelessly tours the world giving seminars and dispens-ing information on how to successfully hook-up pro audio equipment2. He makes the simple point that it is absurd that you cannot go out and buy pro audio equipment from sever-al different manufacturers, buy standard off-the-shelf cable assemblies, come home, hook it all up and have it work hum and noise free. Plug and play. Sadly, almost never is this the case, despite the science and rules of noise-free interconnect known and documented for over 60 years (see References for complete information).

It all boils down to using balanced lines, only balanced lines, and nothing but balanced lines. This is why they were developed. Further, that you tie the shield to the chassis, at the point it enters the chassis, and at both ends of the cable (more on ‘both ends’ later).

Since standard XLR cables come with their shields tied to pin 1 at each end (the shells are not tied, nor need be), this means equipment using 3-pin, XLR-type connectors must tie pin 1 to the chassis (usually called chassis ground) — not the audio signal ground as is most common.

Not using signal ground is the most radical departure from common pro-audio practice. Not that there is any ar-gument about its validity. There isn’t. This is the right way to do it. So why doesn’t audio equipment come wired this way? Well, some does, and since 1993, more of it does. That’s when Rane started manufacturing some of its products with balanced inputs and outputs tying pin 1 to chassis. So why doesn’t everyone do it this way? Because life is messy, some things are hard to change, and there will always be equip-ment in use that was made before proper grounding prac-tices were in effect.

Unbalanced equipment is another problem: it is ever-where, easily available and inexpensive. All those RCA and ¼" TS connectors found on consumer equipment; effect-loops and insert-points on consoles; signal processing boxes; semi-pro digital and analog tape recorders; computer cards; mixing consoles; et cetera.

The next several pages give tips on how to successfully address hooking up unbalanced equipment. Unbalanced equipment when “blindly” connected with fully balanced units starts a pattern of hum and undesirable operation, requiring extra measures to correct the situation.

Figure 1b. Recommmended practice.

CASE(+)

(–)

COMMON (WRONG) PRACTICE RECOMMENDED PRACTICE

(–)

(+)OPTIONALCASE

1

2

3 3

1

2

CHASSISGROUND

SIGNALGROUND

CHASSISGROUND

CHASSISGROUND

The Next Best Right Way To Do ItThe quickest, quietest and most foolproof method to con-nect balanced and unbalanced is to transformer isolate all unbalanced connections. See Figure 2.

Many manufacturers provide several tools for this task, including Rane. Consult your audio dealer to explore the options available.

The goal of these adaptors is to allow the use of standard cables. With these transformer isolation boxes, modification of cable assemblies is unnecessary. Virtually any two pieces of audio equipment can be successfully interfaced without risk of unwanted hum and noise.

Another way to create the necessary isolation is to use a direct box. Originally named for its use to convert the high impedance, high level output of an electric guitar to the low impedance, low level input of a recording console, it allowed the player to plug “directly” into the console. Now this term is commonly used to describe any box used to convert un-balanced lines to balanced lines.

The Last Best Right Way To Do ItIf transformer isolation is not an option, special cable assemblies are a last resort. The key here is to prevent the shield currents from flowing into a unit whose grounding scheme creates ground loops (hum) in the audio path (i.e., most audio equipment).

It is true that connecting both ends of the shield is theo-retically the best way to interconnect equipment –though this assumes the interconnected equipment is internally grounded properly. Since most equipment is not internally grounded properly, connecting both ends of the shield is not often practiced, since doing so usually creates noisy interconnections.

A common solution to these noisy hum and buzz prob-lems involves disconnecting one end of the shield, even though one can not buy off-the-shelf cables with the shield disconnected at one end. The best end to disconnect is the receiving end. If one end of the shield is disconnected, the noisy hum current stops flowing and away goes the hum — but only at low frequencies. A ground-sending-end-only shield connection minimizes the possibility of high fre-quency (radio) interference since it prevents the shield from acting as an antenna to the next input. Many reduce this potential RF interference by providing an RF path through

Figure 2. Transformer Isolation

NOT CONNECTEDAT CHASSIS(PLASTIC JACK)

EARTH GROUNDEDMETAL ENCLOSURE

CHASSIS ISGROUNDED TO PIN 1

1/4”TIP-SLEEVE

CASE LUG MAYCONNECT TO CHASSIS(NOT REQUIRED)

TRANSFORMER

UNBALANCED BALANCED

3

1

2

Page 16: MLM82S Mixer Manual

Interconnection-4

a small capacitor (0.1 or 0.01 microfarad ceramic disc) con-nected from the lifted end of the shield to the chassis. (This is referred to as the “hybrid shield termination” where the sending end is bonded to the chassis and the receiving end is capacitively coupled. See Neutrik’s EMC-XLR for example.) The fact that many modern day installers still follow this one-end-only rule with consistent success indicates this and other acceptable solutions to RF issues exist, though the increasing use of digital and wireless technology greatly increases the possibility of future RF problems.

If you’ve truly isolated your hum problem to a specific unit, chances are, even though the documentation indicates proper chassis grounded shields, the suspect unit is not in-ternally grounded properly. Here is where special test cable assemblies, shown in Figure 3, really come in handy. These assemblies allow you to connect the shield to chassis ground at the point of entry, or to pin 1, or to lift one end of the shield. The task becomes more difficult when the unit you’ve isolated has multiple inputs and outputs. On a suspect unit with multiple cables, try various configurations on each con-nection to find out if special cable assemblies are needed at more than one point.

See Figure 4 for suggested cable assemblies for your par-ticular interconnection needs. Find the appropriate output configuration (down the left side) and then match this with the correct input configuration (across the top of the page.) Then refer to the following pages for a recommended wiring diagram.

Ground LiftsMany units come equipped with ground lift switches. In only a few cases can it be shown that a ground lift switch improves ground related noise. (Has a ground lift switch ever really worked for you?) In reality, the presence of a ground lift switch greatly reduces a unit’s ability to be “properly” grounded and therefore immune to ground loop hums and buzzes. Ground lifts are simply another Band-Aid® to try in case of grounding problems. It is true that an entire system of properly grounded equipment, without ground lift switches, is guaranteed (yes guaranteed) to be hum free. The problem is most equipment is not (both internally and externally, AC system wise) grounded properly.

Most units with ground lifts are shipped so the unit is “grounded” — meaning the chassis is connected to audio signal ground. (This should be the best and is the “safest” position for a ground lift switch.) If after hooking up your system it exhibits excessive hum or buzzing, there is an incompatibility somewhere in the system’s grounding con-figuration. In addition to these special cable assemblies that may help, here are some more things to try:

1. Try combinations of lifting grounds on units supplied with lift switches (or links). It is wise to do this with the power off!

2. If you have an entirely balanced system, verify all chassis are tied to a good earth ground, for safety’s sake and hum protection. Completely unbalanced systems never earth ground anything (except cable TV, often a ground loop source). If you have a mixed balanced and unbalanced system, do yourself a favor and use isolation transform-ers or, if you can’t do that, try the special cable assemblies described here and expect it to take many hours to get things quiet. May the Force be with you.

3. Balanced units with outboard power supplies (wall warts or “bumps” in the line cord) do not ground the chassis through the line cord. Make sure such units are solidly grounded by tying the chassis to an earth ground using a star washer for a reliable contact. (Rane always provides this chassis point as an external screw with a toothed washer.) Any device with a 3-prong AC plug, such as an amplifier, may serve as an earth ground point. Rack rails may or may not serve this purpose depending on screw locations and paint jobs.

Figure 3. Test cable

TESTWIRE

GROUND CLIP

FEMALE MALE

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23

1

23

REDBLACKSHIELD

REDBLACK

SHIELD

2-CONDUCTOR SHIELDED CABLE

Page 17: MLM82S Mixer Manual

Interconnection-5

Floating, Pseudo, and Quasi-BalancingDuring inspection, you may run across a ¼" output called floating unbalanced, sometimes also called psuedo-balanced or quasi-balanced. In this configuration, the sleeve of the output stage is not connected inside the unit and the ring is connected (usually through a small resistor) to the audio signal ground. This allows the tip and ring to “appear” as an equal impedance, not-quite balanced output stage, even though the output circuitry is unbalanced.

Floating unbalanced often works to drive either a bal-anced or unbalanced input, depending if a TS or TRS stan-dard cable is plugged into it. When it hums, a special cable is required. See drawings #11 and #12, and do not make the cross-coupled modification of tying the ring and sleeve together.

Winning the Wiring Wars• Use balanced connections whenever possible, with the

shield bonded to the metal chassis at both ends.• Transformer isolate all unbalanced connections from bal-

anced connections.• Use special cable assemblies when unbalanced lines can-

not be transformer isolated.• Any unbalanced cable must be kept under 10 feet

(3 m) in length. Lengths longer than this will amplify all the nasty side effects of unbalanced circuitry's ground loops.

SummaryIf you are unable to do things correctly (i.e. use fully bal-anced wiring with shields tied to the chassis at both ends, or transformer isolate all unbalanced signals from balanced signals) then there is no guarantee that a hum-free intercon-nect can be achieved, nor is there a definite scheme that will assure noise-free operation in all configurations.

References1. Neil A. Muncy, “Noise Susceptibility in Analog and Digi-

tal Signal Processing Systems,” presented at the 97th AES Convention of Audio Engineering Society in San Fran-cisco, CA, Nov. 1994.

2. Grounding, Shielding, and Interconnections in Analog & Digital Signal Processing Systems: Understanding the Basics; Workshops designed and presented by Neil Muncy and Cal Perkins, at the 97th AES Convention of Audio Engineering Society in San Francisco, CA, Nov. 1994.

3. The entire June 1995 AES Journal, Vol. 43, No. 6, available $6 members, $11 nonmembers from the Audio Engineer-ing Society, 60 E. 42nd St., New York, NY, 10165-2520.

4. Phillip Giddings, Audio System Design and Installation (SAMS, Indiana, 1990).

5. Ralph Morrison, Noise and Other Interfering Signals (Wi-ley, New York, 1992).

6. Henry W. Ott, Noise Reduction Techniques in Electronic Systems, 2nd Edition (Wiley, New York, 1988).

7. Cal Perkins, “Measurement Techniques for Debugging Electronic Systems and Their Instrumentation,” The Pro-ceedings of the 11th International AES Conference: Audio Test & Measurement, Portland, OR, May 1992, pp. 82-92 (Audio Engineering Society, New York, 1992).

8. Macatee, RaneNote: “Grounding and Shielding Audio Devices,” Rane Corporation, 1994.

9. Philip Giddings, “Grounding and Shielding for Sound and Video,” S&VC, Sept. 20th, 1995.

10. AES48-2005: AES standard on interconnections —Grounding and EMC practices — Shields of connectors in audio equipment containing active circuitry (Audio Engineering Society, New York, 2005).

Band-Aid is a registered trademark of Johnson & Johnson

Page 18: MLM82S Mixer Manual

Interconnection-6

Figure 4. Interconnect chart for locating correct cable assemblies on the following pages.Note: (A) This configuration uses an “off-the-shelf” cable.

Note: (B) This configuration causes a 6 dB signal loss. Compensate by “turning the system up” 6 dB.

To Input

MALEBALANCED XLR

¼" BALANCED TRS (TIP-RING-SLEEVE)

¼" OR 3.5mm UNBALANCED

TS (TIP-SLEEVE)

UNBALANCED RCA BALANCEDEUROBLOCK

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FEMALE BALANCED XLR(NOT A TRANSFORMER,

NOR A CROSS-COUPLEDOUTPUT STAGE)

FEMALE BALANCED XLR(EITHER A TRANSFORMER

OR A CROSS-COUPLEDOUTPUT STAGE)

¼” BALANCED TRS(NOT A TRANSFORMER,

NOR A CROSS-COUPLEDOUTPUT STAGE)

¼” BALANCED TRS(EITHER A TRANSFORMER

OR A CROSS-COUPLEDOUTPUT STAGE)

¼” FLOATING UNBALANCEDTRS (TIP-RING-SLEEVE)(SLEEVE IN UNIT = NC)

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CABLECONNECTORS

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+ to +– to –

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Page 19: MLM82S Mixer Manual

Interconnection-7

10

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CROSS-COUPLED OUTPUT ONLY: CONNECT PIN 1 TO PIN 3 AT THIS ENDAND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).

CROSS-COUPLED OUTPUT ONLY: CONNECT PIN 1 TO PIN 3 AT THIS ENDAND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).

CROSS-COUPLED OUTPUT ONLY: CONNECT RING TO SLEEVEAT THIS END AND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).

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BLACKSHIELD

REDBLACK

RED2-CONDUCTOR SHIELDED CABLE

Page 20: MLM82S Mixer Manual

Interconnection-8 DOC 102907

©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 USA TEL 425-355-6000 FAX 425-347-7757 WEB rane.com

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C41

0.1

C42

0.1

C43

0.1

GN

D

GN

DG

ND

GN

DG

ND

+15-15

2

13

R3A

2kRD

4 12 13 3 5

2

7

810

11

6

9

114

+- G1

G2

V+

V-

RE

FS

EN

U16

1512

GN

D

R205

10.0

R209

10.0

R150

47.5k

R151

47.5k

R84

1.33k

R85

1.33k

D7

BZT52C

12

D8

BZT52C

12

D10

BZT52C

12

D9

BZT52C

12

C34

220pF

C440.1

C45

0.1

C46

0.1

GN

D

GN

DG

ND

GN

DG

ND

+15-15

2

13

R2A

2kRD

4 12 13 3 5

2

7

810

11

6

9

114

+- G1

G2

V+

V-

RE

FS

EN

U17

1512

GN

D

R206

10.0

R210

10.0

R154

47.5k

R155

47.5k

R88

1.33k

R89

1.33kD11

BZT52C

12

D12

BZT52C

12

D14

BZT52C

12

D13

BZT52C

12

C35

220pF

C47

0.1

C48

0.1

C49

0.1

GN

D

GN

DG

ND

GN

DG

ND

+15-15

2

13

R4A

2kRD

4 12 13 3 5

2

7

810

11

6

9

114

+- G1

G2

V+

V-

RE

FS

EN

U18

1512

GN

D

R207

10.0

R211

10.0

R153

47.5k

R152

47.5k

R86

1.33k

R87

1.33kD15

BZT52C

12

D34

BZT52C

12

D16

BZT52C

12

D17

BZT52C

12

C36

220pF

C50

0.1

C51

0.1

C52

0.1

321

84

U1A 072

567

U1B 072

R129

402k

R133

511

R120

51.1k

R121

51.1kR

113

1.10M

R112

1.10M

R101

100k

R15

100k

R125

2.00k

C86

0.1

D24

MB

R0540T1G

GN

D

321

84

U3A 072

567

U3B 072

R127

402k

R131

511

R116

51.1k

R117

51.1kR

109

1.10M

R108

1.10M

R99

100k

R180100k

R123

2.00k

C84

0.1

D22

MB

R0540T1G

GN

D

321

84

U2A 072

567

U2B 072

R128

402k

R132

511

R118

51.1k

R119

51.1kR

111

1.10M

R110

1.10M

R100

100k

R181100k

R124

2.00k

C85

0.1

D23

MB

R0540T1G

GN

D

321

84

U4A 072

567

U4B 072

R126

402k

R130

511

R114

51.1k

R115

51.1kR

107

1.10M

R106

1.10M

R98

100k

R182100k

R122

2.00k

C83

0.1

D21

MB

R0540T1G

R220

2.49k

R250

100R

251

100 R221

2.49kR

2222.49k

R223

2.49kR

2242.49k

R225

2.49k

R226

2.49kR

2272.49k

R228

2.49kR

2292.49k

R230

2.49kR

2312.49k

R232

2.49kR

2332.49k

R14

2.49kR

902.49k

R91

2.49kR

2372.49k

R92

2.49kR

2392.49k

R240

2.49kR

2412.49k

R242

2.49kR

2432.49k

R261

10.0k

R262

10.0k

R12

10.0k

R263

10.0k

R265

10.0k

R266

10.0k

R264

10.0k

R267

10.0k

R269

10.0k

R270

10.0k

R268

10.0k

R271

10.0k

R273

10.0k

R274

10.0k

R272

10.0k

R275

10.0k

R280

2.00

R281

2.00

R282

2.00

R283

2.00

+

C37

470/25v

+

C38

470/25v

+

C39

470/25v

+

C40

470/25v

R1C

2kRDG

ND

R2C

2kRDG

ND

R3C

2kRDG

ND

R4C

2kRDG

ND

78S

1C

2P2T

GN

D78S

3C

2P2T

GN

D

78S

2C

2P2T

GN

D78S

4C

2P2T

GN

D

78 S13C2P

2TG

ND

C96

0.1

C95

0.1

C92

0.1

C91

0.1

C94

0.1

C93

0.1

C90

0.1

C89

0.1

EC

N 114570

RI TO

SM

T CO

NV

ER

SIO

N

D42

1SM

B15C

AT3D

43GN

D

D46

1SM

B15C

AT3D

47GN

D

D44

1SM

B15C

AT3D

45GN

D

D48

1SM

B15C

AT3D

49GN

D

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INP

UTS

MLM

82S

114577of

ACTIO

N:

Main

GN

D

2

1 3

R5A

10kA

GN

D

C70

22/16v

-15

+15

GN

D

GN

D

2

1 3

R6A

10kA

GN

D

C71

22/16v

-15

+15

GN

D

2

1 3

R7A

10kA

GN

D

Z132200pF

Z142200pF

C72

22/16v

-15

+15

GN

D

2

1 3

R8A

10kA

GN

D

Z152200pF

Z162200pF

C73

22/16v

-15

+15

GN

D

5

4 6

R5B

10kA

GN

D

C74

22/16v

+15

-15

GN

D

GN

D

5

4 6

R6B

10kA

GN

D

C75

22/16v

GN

D

5

4 6

R7B

10kA

GN

D

Z212200pF

Z222200pF

C76

22/16v

GN

D

5

4 6

R8B

10kA

GN

D

Z232200pF

Z242200pF

C77

22/16v

123 S

5A2P

2T123 S

6A2P

2T

123 S

7A2P

2T

123 S

8A2P

2T

LINE

5A

LINE

6A

LINE

7A

LINE

8ALIN

E 8B

LINE

7B

LINE

6B

LINE

5B

LINE

8 MO

NO

LINE

7 MO

NO

LINE

6 MO

NO

LINE

MIX

_ALIN

E M

IX_B

456 S

5B

2P2T

456 S

6B

2P2T

456 S

7B

2P2T

456 S

8B

2P2T

+15-15

LINE

5 MO

NO

R165

47.5kR

164

47.5k

R20

11.3k

R25

11.3k

R30

11.3k

R35

11.3k

R40

11.3k

R45

11.3k

R50

11.3k

R11

11.3k

5 67

U9B

4580

8

3 21

4

U9A

4580

C53

0.1

321

84

U5A

4580

C54

0.1

321

84

U6A

4580

C55

0.1

321

84

U7A

4580

C56

0.1

321

84

U8A

4580

C57

0.1

567

U5B

4580

567

U6B

4580

567

U7B

4580

567

U8B

4580

R57

10.0k

R56

10.0k

R58

10.0k

R59

10.0k

R19

10.0k

R16

10.0k

R17

10.0k

R18

10.0k

R156

511

R24

10.0k

R21

10.0k

R22

10.0k

R23

10.0k

R157

511

R29

10.0k

R26

10.0k

R27

10.0k

R28

10.0k

R158

511

R34

10.0k

R31

10.0k

R32

10.0k

R33

10.0k

R159

511

R39

10.0k

R36

10.0k

R37

10.0k

R38

10.0k

R160

511

R44

10.0k

R41

10.0k

R42

10.0k

R43

10.0k

R161

511

R49

10.0k

R46

10.0k

R47

10.0k

R48

10.0k

R162

511

R13

10.0k

R51

10.0k

R52

10.0k

R53

10.0k

R163

511

C105

47pF

C106

47pF

D36

YEL

D32

YEL

D31

YEL

D35

YEL

R5C

10kAGN

D

R6C

10kAGN

D

R7C

10kAGN

D

R8C

10kAGN

D

78S

8C

2P2T

GN

D 78S

7C

2P2T

GN

D 78S

6C

2P2T

GN

D 78S

5C

2P2T

GN

D

J1A

ST S

W TH

J1B

ST S

W TH

J4A

ST S

W TH

J4B

ST S

W TH

J5A

ST S

W TH

J5B

ST S

W TH

J6A

ST S

W TH

J6B

ST S

W TH

Z92200pF

Z102200pF

Z112200pF

Z122200pF

Z172200pF

Z182200pF

Z192200pF

Z202200pF

GN

D

GN

D

GN

D

GN

DG

ND

GN

D

GN

D

GN

D

+15-15

+15-15

+15-15

-15 +15

GN

D

C4

0.1C

50.1

C6

0.1C

70.1

C8

0.1

EC

N 114570

RI TO

SM

T CO

NV

ER

SIO

N

D54

1SM

B15C

AT3

D55

GN

D

D58

1SM

B15C

AT3

D59

GN

D

D62

1SM

B15C

AT3

D63

GN

D

D66

1SM

B15C

AT3

D67

GN

D

D56

1SM

B15C

AT3

D57

GN

D

D60

1SM

B15C

AT3

D61

GN

D

D64

1SM

B15C

AT3

D65

GN

D

D68

1SM

B15C

AT3

D69

GN

D

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MIX

/OU

TPU

T MLM

82S

114577of

ACTIO

N:

Main

23

41

S9A

2P3T

67

85

S9B

2P3T

23

41

S10A

2P3T

67

85

S10B

2P3T

23

41

S11A

2P3T

67

85

S11B

2P3T

23

41

S12A

2P3T

67

85

S12B

2P3T

MIC

1

MIC

2

MIC

3

MIC

4

LINE

MIX

_A

LINE

MIX

_BG

ND

GN

D-15

+15

+15

-15G

ND

1 2 3S

14A2P

2T

456S

14B2P

2T

2

1 3

R9A

10kA

GN

D

GN

D

+15

-15

GN

D

1 2 3S

15A2P

2T

456S

15B2P

2T

GN

D

GN

D GN

D

-15+15

D19

RE

D

-15

GN

D

GN

D GN

DD

20R

ED

-15

AB

321

84

U14A 072

567

U14B072

C88

0.1

5 67

U12B4580

C65

0.1

8

3 21

4

U12A 4580

C64

0.1

8

3 21

4

U11A 4580

C87

0.1

5 67

U11B4580

8

3 21

4

U13A 4580

5 67

U13B4580

R64

10.0k

R65

10.0k

R66

10.0k

R67

10.0k

R68

10.0k

R79

10.0k

R61

10.0kR

62

10.0k

R63

10.0k

R73

10.0k

R74

10.0k

R75

10.0k

R76

10.0k

R77

10.0k

R81

10.0k

R70

10.0kR

71

10.0k

R72

10.0k

R104

100k

R105

100kR177

20.0k

R78

6.81k

R178

20.0k

R80

6.81k

R142

5.11k

R143

5.11k

R10

5.11k

R145

5.11k

R171

100

R172

100

R174

100

R175

100

R173

100

R176

100

C109

33pF

C110

33pF

D3

MB

R0540T1G

R277

10.0k

R278

10.0k

R276

10.0k

R279

10.0k

21 34

+-

J23pin M

ALE

XLR

21 34

+-

J123pin M

ALE

XLR

T 1A 250V

F3

0.0022 X1Y2

C195

0.0022 X1Y2

C196

20mH

12

43

T1

0.33C

197

DF06M

4 3

12

D33

0.001C

2000.001C

199

0.0022 X1Y2

C201

H6G

ND

P

VIP

ER

50

1 2

5

4 3Vdd

OSC

DR

AINS

COMP

U38

10.0kR

144600uH

598

42

10

1

67

T2

+C

1936.8/400v

P6S

MB

160AT

D25

MU

RS

160D

26

1/50v+C

192

1.00kR

260

4148

D27

36.5

R234

47/50v+

C189

FOD

2741

LED

8

GN

D5

NC

4

CO

MP

6E

3

C2

NC

1

FB7

U36

0.001

C190

MU

RS

160

D28

MU

RS

160

D29

130

R235

130

R236

1.24kR

238

0.1C

185

10.0kR

258

+C

202470/25v

+C

203470/25v

L510uH

L610uH

+C

182150/25v

+C

183150/25v

GN

D

+15

-15

51.1kR

2590.0022

C188

GN

D

0.068C

18710.0kR

54

YEL

D18

10.0kR

55

+15

GN

D

PO

WE

R

TP1

TP2

IEC

PW

R

H3

G2

N1

J11

5

46

R9B

10kA

R9C

10kAGN

D

54

6R

179B10kA

R179C

10kAGN

D

910

S9C

2P3T

910

S10C

2P3T

910

S11C

2P3T

910

S12C

2P3T

GN

D

78

S14C

2P2T

78

S15C

2P2T

GN

D

GN

D

H2

H1

H3

H4

H5

C63

1/50v

C62

22/16v

Z252200pFZ26

2200pF

Z272200pFZ28

2200pF

GN

D

GN

D

GN

DG

ND

+C

1141/50v

+C

1131/50v

MIC

LINE

MIC

LINE

MIC

LINE

MIC

LINE

C1

0.1

-15 +15

C2

0.1C

30.1

GN

DD40

MB

R0540T1G

R102

5.11k

R103

5.11kC

112

47pF

C111

47pF

GN

D

C107

47pF

C108

47pFR

69

20.0k

R60

20.0k

2

1 3

R179A10kA

D2

MB

R0540T1G

C61

1/50v

C60

22/16v

D41

MB

R0540T1G

GN

D

EC

N 114570

RI TO

SM

T CO

NV

ER

SIO

N

D51

1SM

B15C

AT3

D50

GN

D

D53

1SM

B15C

AT3

D52

GN

D

Page 25: MLM82S Mixer Manual

WARRANTY

FACTORY AUTHORIZED SERVICEYour unit may be serviced by the Rane Factory or any Authorized Rane Service Center. To find a Service Center near you, please call the Rane factory, or check the Rane website. Please do not return your unit to Rane without prior authorization.

Rane Corporation

To obtain service or a Return Authorization, please phone 425-355-6000

or Fax 425-347-7757

The current list of U.S. Rane Authorized Service Centers is found on our website: www.rane.com/service.html

LIMITED DOMESTIC WARRANTY

RANE CORPORATION WARRANTS ALL RANE PRODUCTS (EXCEPT THOSE ITEMS CLASSIFIED AS WEAR PARTS, AND LISTED ON THE MANUAL-1 PAGE OF EACH OPERATORS MANUAL) PURCHASED IN THE USA AGAINST DEFECTS IN MATERIAL OR WORKMANSHIP FOR A PERIOD OF TWO (2) YEARS. WEAR PARTS ARE LIMITED TO A PERIOD OF NINETY (90) DAYS FROM THE INITIAL DATE OF RETAIL PURCHASE FROM AN AUTHORIZED RANE DEALER—WEAR PARTS REQUIRE PROOF OF PURCHASE DATE. This limited warranty extends to all purchasers or owners of the product during the warranty period beginning with the original retail purchase. Rane Corporation does not, however, warrant its products against any and all defects: 1) arising out of material or workmanship not provided or furnished by Rane, or 2) resulting from abnormal use of the product or use in violation of instructions, or 3) in products repaired or serviced by other than authorized Rane repair facilities, or 4) in products with removed or defaced serial numbers, or 5) in components or parts or products expressly warranted by another manufacturer. Rane agrees to supply all parts and labor to repair or replace defects covered by this limited warranty with parts or products of original or improved design, at its option in each respect, if the defective product is shipped prior to the end of the warranty period to any Rane authorized warranty repair facility in the U.S. or to the Rane factory in the original packaging or a replacement supplied by Rane, with all transportation costs and full insurance paid each way by the purchaser or owner.

LIMITED WARRANTY OUTSIDE THE U.S.A.RANE PRODUCTS ARE WARRANTED ONLY IN THE COUNTRY WHERE PURCHASED, THROUGH THE AUTHORIZED RANE DISTRIBUTOR IN THAT COUNTRY, AGAINST DEFECTS IN MATERIAL OR WORKMANSHIP, THE SPECIFIC PERIOD OF THIS LIMITED WARRANTY SHALL BE THAT WHICH IS DESCRIBED TO THE ORIGINAL RETAIL PURCHASER BY THE AUTHORIZED RANE DEALER OR DISTRIBUTOR AT THE TIME OF PURCHASE. Rane Corporation does not, however, warrant its products against any and all defects: 1) arising out of materials or workmanship not provided or furnished by Rane, or 2) resulting from abnormal use of the product or use in violation of instructions, or 3) in products repaired or serviced by other than authorized Rane repair facilities, or 4) in products with removed or defaced serial numbers, or 5) in components or parts or products expressly warranted by another manufacturer. Rane agrees, through the applicable authorized distributor, to repair or replace defects covered by this limited warranty with parts or products of original or improved design, at its option in each respect, if the defective product is shipped prior to the end of the warranty period to the designated authorized Rane warranty repair facility in the country where purchased, or to the Rane factory in the U.S., in the original packaging or a replacement supplied by Rane, with all transportation costs and full insurance paid each way by the purchaser or owner.

ALL REMEDIES AND THE MEASURE OF DAMAGES ARE LIMITED TO THE ABOVE SERVICES, IT IS POSSIBLE THAT ECONOMIC LOSS OR INJURY TO PERSON OR PROPERTY MAY RESULT FROM THE FAILURE OF THE PRODUCT; HOWEVER, EVEN IF RANE HAS BEEN ADVISED OF THIS POSSIBILITY, THIS LIMITED WARRANTY DOES NOT COVER ANY SUCH CONSEQUENTIAL OR INCIDENTAL DAMAGES. SOME STATES OR COUNTRIES DO NOT ALLOW THE LIMITATIONS OR EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, ARISING BY LAW, COURSE OF DEALING, COURSE OF PERFORMANCE, USAGE OF TRADE, OR OTHERWISE, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO A PERIOD OF TWO (2) YEARS FROM EITHER THE DATE OF ORIGINAL RETAIL PURCHASE OR, IN THE EVENT NO PROOF OF PURCHASE DATE IS AVAILABLE, THE DATE OF MANUFACTURE, SOME STATES OR COUNTRIES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE, COUNTRY TO COUNTRY.

Warranty-1

Page 26: MLM82S Mixer Manual

WARRANTY PROCEDURE - Only Valid in the USA

NOTICE! You must complete and return the warranty card or register your product online to extend the Warranty from 2 years to 3 years!

TO VALIDATE YOUR EXTENDED WARRANTY: Use the postcard that came in the box with your unit, or go to www.rane.com and click on New Product Registration. Fill out the warranty completely, being sure to include the model and serial number of the unit since this is how warranties are tracked. If your Rane product was purchased in the USA, mail the completed card or register online with to Rane Corporation within 10 days from the date of purchase. If you purchased the product outside the USA you must file your warranty registration with the Rane Distributor in that country. It is advised that you keep your bill of sale as proof of purchase, should any difficulties arise concerning the registration of the warranty card. NOTICE: IT IS NOT NECESSARY TO REGISTER IN ORDER TO RECEIVE RANE CORPORATION’S STANDARD TWO YEAR LIMITED WARRANTY.

WARRANTY REGISTRATION is made and tracked by model and serial numbers only, not by the purchaser’s or owner’s name. Therefore any warranty correspondence or inquires must include the model and serial number of the product in question. Be sure to fill in the model and serial number in the space provided below and keep this in a safe place for future reference.

WARRANTY SERVICE MUST BE PERFORMED ONLY BY AN AUTHORIZED RANE SERVICE FACILITY LOCATED IN THE COUNTRY WHERE THE UNIT WAS PURCHASED, OR (if product was purchased in the USA) AT THE RANE FACTORY IN THE USA. If the product is being sent to Rane for repair, please call the factory for a Return Authorization number. We recommend advance notice be given to the repair facility to avoid possible needless shipment in case the problem can be solved over the phone. UNAUTHORIZED SERVICE PERFORMED ON ANY RANE PRODUCT WILL VOID ITS EXISTING FACTORY WARRANTY.

FACTORY SERVICEIf you wish your Rane product to be serviced at the factory, it must be shipped fully insured, in the original packing box or equivalent. This warranty will not cover repairs on products damaged through improper packaging. If possible, avoid sending products through the mail. Be sure to include in the package:

1. Complete return street shipping address (P.O. Box numbers are not acceptable).

2. A detailed description of any problems experienced, including the make and model numbers of any other system equipment.

3. Remote power supply, if applicable.

Repaired products purchased in the U.S. will be returned prepaid freight via the same method they were sent to Rane. Products purchased in the USA, but sent to the factory from outside the USA must include return freight funds, and the sender is fully responsible for all customs procedures, duties, tariffs and deposits.

In order to qualify for Rane’s one year extended warranty (for a total of 3 years parts and labor), the warranty must be completely filled out and sent to

us immediately. Valid in USA only.

We recommend you write your serial number here in your owners manual and on your sales receipt for your records.

SERIAL NUMBER:______________________________________PURCHASE DATE:__________________________________

©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com

Warranty-2 108360

Page 27: MLM82S Mixer Manual

EU Declaration of Conformity

Product Model: MLM82S Serial Numbers: 900000 – 999999Product Type: Professional Audio Signal Processing

Manufacturer: Rane CorporationAddress: 10802 47th Avenue West, Mukilteo WA 98275-5000 USA

This declaration is issued under the sole responsibility of Rane Corporation.

The object of the declaration described above is in conformity with the relevant Union harmonisation legislation:2014/35/EU The Low Voltage Directive2014/30/EU The Electromagnetic Compatibility Directive2012/19/EU The Waste Electrical and Electronic Equipment Directive2011/65/EU The Restriction of Hazardous Substances Directive2001/95/EC The General Product Safety Directive

References to the relevant harmonised standards used in relation to which conformity is declared:EN60065:2002/A1:2006/A11:2008/A2:2010/A12:2011 Safety for audio, video and similar electronic apparatus.EN55103-1:2009/AM1:2012 Compatibility of professional electronic A/V apparatus emissions.EN55103-2:2009 Compatibility of professional electronic A/V apparatus immunity.EN50581:2012 Technical documentation for RoHS assessment of electronic products.

Additional Information:Environment E2CE mark first affixed in 2007

In order for the customer to maintain compliance with these regulations, high quality shielded cable must be used for interconnection to other equipment. No changes or modification of the equipment, other than that expressly outlined by the manufacturer, are allowed. The user of this equipment shall accept full responsibility for compliance with Union harmonisation legislation in the event that the equipment is modified without written consent of the manufacturer.

EN55103-2 Immunity Results: THD+N: 4 dBu, 400 Hz, BW 20 Hz - 20 kHzTest Description Measurement ConditionsRF Electromagnetic Fields Immunity

80 MHz - 1000 MHz, 1 kHz AM, 80% depth, 3V/m <-68 dB 80 MHz - 200 MHz<-30 dB 200 MHz - 1000 MHz

Conducted RF Disturbances Immunity150 kHz - 80 MHz, 1 kHz AM, 80% depth, 3V rms <-80 dB Power Lines

<-79 dB Signal LinesMagnetic Fields Immunity

50 Hz - 10 kHz, 4.0 - 0.4 A/m <-53 dB

Signed for and on behalf of: Rane CorporationPlace of issue: Mukilteo WA USA Date of issue: May 23, 2007Name: Michaël Rollins Function: Compliance Engineer Signature:

Page 28: MLM82S Mixer Manual

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