w w w . l - a c o u s t i c s . c o mParc de la Fontaine de Jouvence • 91462 Marcoussis Cedex • France • Ph. : +33 (0)1 69 63 69 63 • Fax: +33(0) 1 69 63 69 64 • e-mail: info@l-acoustics.com

12XT Coaxial Enclosure

Description

Characteristics

Usable bandwidth (-10dB) 55 - 20k Hz ([12XTA_FR] preset)

Nominal directivity (-6dB)Nominal directivity (-6dB)Nominal directivity 90° (± 20°) Axi-symmetric

Maximum SPL1 133 dB ([12XTA_FI] preset)

Long term RMS handling capacity

12XT Passive: 380 W12XT Active: LF: 290 W HF: 135 W

Components

LF: 1 x 12’’ weather-resistant transducer, impedance 8 ohmsHF: 1 x 3’’ diaphragm compression driver, impedance 8 ohms

Physical data

H x W x D: 540 x 410 x 389 mm21.3 x 16.1 x 15.3 in.

Wedge angle: 30° or 60° with regard to verticalWeight (net): 29 kg 63.9 lb.Connectors: 2 x 4-pin Speakon®

Material: 18 mm, 24 mm and 30 mm Baltic birch plywood Finish: grayish-brown RAL 8019®

Front: sandblast-coated steel grill, acoustically transparent ‘‘Airnet’’ black cloth

Rigging: integrated handles and pole mount socket, Omnimount compatibility, optional ETR12 bracket

1 Peak level measured at 1m under free field conditions using 10 dB crest factor pink noise with specified preset and corresponding EQ settings.

The 12XT combined active/passive cabinet is the mid sized model of theL-ACOUSTICS® coaxial range and has an operating frequency bandwidth of 55 Hz to 20 kHz. This response can be lowered to 32 Hz with the addition of the SB118 subwoofer.

The 12XT enclosure contains a 3’’ diaphragm compression driver coaxially loaded (for HF directivity control) onto a 12’’ low frequency transducer in a bass-reflex tuned enclosure. Managed by the LA4 amplified controller, the active filtering encompasses advanced crossover functions, system EQ, HF and LF transducer time-alignment, and dual (real time and RMS) protection of the transducers. In passive mode, the 12XT onboard crossover network uses proprietary third order filters. The linearization and protection of the transducers is defined by the drive parameters contained in the LA4 amplified controller.

The coaxial transducer arrangement produces a 90° axi-symmetric directivity output along with a smooth tonal response free of any secondary lobes over the entire frequency range.

The wedge-shaped cabinet design makes the 12XT perfectly suited to all multi-purpose sound reinforcement applications in addition to short or long throw monitoring use with two fixed angle settings of 30˚ and 60° (with regard to the vertical). Made of high grade Baltic birch plywood, the cabinet also features a pole mount socket, and a predrilled template for 3rd party Omnimount fixtures. The complimentary ETR12 bracket is also available for flown applications.

The 12XT is controlled and amplified by the L-ACOUSTICS® LA4 controller in the following active or passive modes (active/passive switch behind front grill):

• ‘‘FULL RANGE’’ mode for standalone use of 12XT at nominal bandwidth ([12XTA_FR], [12XTA_FI], [12XTA_MO], [12XTP_FR], [12XTP_FI] or [12XTP_MO] presets)

• ‘‘HIGH-PASS’’ mode with 100 Hz high-pass filter to possibly associate the complimentary SB118 subwoofer (same presets as above with ‘‘_100’’ extension)

• ‘‘HYBRID’’ mode for hybrid configuration featuring the complimentary SB118 subwoofer ([12XTP_SB118] preset).

For each mode a distinction is drawn between [FRONT], [FILL] and [MONITOR] presets as they respectively match front of house, distributed applications and half-space loading operating conditions. The performances of the 12XT enclosure depend upon the choice of preset and physical system configuration.

12X

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w w w . l - a c o u s t i c s . c o mParc de la Fontaine de Jouvence • 91462 Marcoussis Cedex • France • Ph. : +33 (0)1 69 63 69 63 • Fax: +33(0) 1 69 63 69 64 • e-mail: info@l-acoustics.com

XT Coaxial Range

The XT coaxial range delivers a complete sound reinforcement solution intended to fulfil the highest demands of audio professionals. Drawing upon decades of real world leading edge experience dating back to the MTD coaxial concept from 1987, the XT series delivers the ultimate sonic performance in a compact and versatile multi tasking package.

The XT coaxial loudspeakers meet the highest demands from both the fixed installation and rental production markets. The system range and components are as follows:

• 8XT full range passive compact enclosure • 12XT full range active / passive enclosure • 115XT HiQ active reference floor monitor • LA4 and LA8 amplified controllers.

The main advantages of coaxial technology include single point-source radiation combined with excellent phase response, total wavefront coherency at all frequencies, and axi-symetrical directivity which produces identical coverage patterns in both the horizontal and vertical planes. The coaxial design also provides LF/HF superimposed dispersion characteristics that are free from polar lobing effects which are destructive in traditional horn and woofer combinations. The end-result is natural studio monitor sound quality which is ideal for both proximity monitoring use, or perfectly matched for semi-reverberant environments. The XT coaxial range features the latest generation of transducers and cutting-edge electro-acoustics engineering design. The end result is an outstanding sonic performance with an aural sensation of natural and transparent sound even at the highest listening levels.

Setting up XT enclosures is quick and easy due to the unique integrated flying hardware system which ensures precision, safety, and full compatibility with current rigging safety standards. Its compact and wedge-shaped format makes the XT range equally suited to various sound reinforcement applications such as front of house, floor monitor and distributed systems.

The XT range has been designed for use with the LA4 amplified controller (LA8 for 115XT HiQ). On board the LA4/8 a wide variety of presets are available across the entire XT range which provide the sound designer with total creative freedom for any conceivable application in theatre, clubs, concert halls, broadcast and multipurpose facilities.

As well as delivering cutting edge audio quality, the LA4/8 amplified controller offers unique dual transducer protection system, precise system drive engine, and remote EQ and tonal balancing features. A single LA4 can power up to eight 8XT or four 12XT enclosures. A single LA8 can power up to four 115XT HiQ. In addition, for more demanding low-end reinforcement the SB118 subwoofer can be deployed as part of a 3 way system.

Any XT configuration can be acoustically and mechanically modelled with the proprietary L-ACOUSTICS® SOUNDVISION 3D simulation software. The XT software predictions are modelled on the preset parameters of the LA4/8 amplified controller.

In addition the design of complex and sophisticated control systems is made possible on the LA4/8 by the integration of an Ethernet based network capability which allows for the simultaneous networking of up to 253 units. The L-ACOUSTICS® LA NETWORK MANAGER software offers remote control and monitoring of the amplified controllers via a user-friendly and intuitive graphic interface.

w w w . l - a c o u s t i c s . c o mParc de la Fontaine de Jouvence • 91462 Marcoussis Cedex • France • Ph. : +33 (0)1 69 63 69 63 • Fax: +33(0) 1 69 63 69 64 • e-mail: info@l-acoustics.com

System Configurations

System Components

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ETR12

ETR8-2

ETR15

• 115XT HiQFull range 2 way active enclosure, 50 - 20k Hz bandwidth1 x 15’’ LF transducer + 1 x 3’’ HF mounted on a coaxial waveguide50° Axi-symmetric directivity

• 12XTFull range 2 way active/passive enclosure, 55 - 20k Hz bandwidth1 x 12’’ LF transducer + 1 x 3’’ HF compression driver 90° Axi-symmetric directivity

• 8XTFull range 2 way passive enclosure, 65 - 20k Hz bandwidth1 x 8’’ LF transducer + 1 x 1.5’’ HF diaphragm compression driver100° Axi-symmetric directivity

• ETR15, ETR12, ETR8-2Rigging brackets with 10° angular increments for 115XT HiQ, 12XT and 8XT

• LA4/LA8Amplified Controllers with DSP library 2 analog inputs and 4 amplifier channel outputsLA4: 4 x 1000 WLA8: 4 x 1800 W (per channel into 4 ohms)Dedicated XT presetsLA NETWORK MANAGER control software

• SOUNDVISIONElectro-acoustic and mechanical simulation software (Windows® compatible) dedicated to L-ACOUSTICS® products SOUNDVISIONSOUNDVISION

The LA4/8 platform allows for total flexibility in defining configurations and related applications for various L-ACOUSTICS® speaker systems including the XT range. Each individual XT model can be driven as a FOH sound system [FRONT], distributed system [FILL] or as a floor monitor [MONITOR]. The engineer can also choose the same preset programs but with the inclusion of a 100 Hz high-pass filter if the system is to be used with the SB118 subwoofer, or simply to eliminate unwanted LF material in standalone mode.

The LA4/8 presets optimize both sonic performance and transducer protection of the systems under all operational conditions. The preset library is structured as follows:

Passive stereo 2 way systems

Mode 8XT Presets (LA4) 12XT Presets (LA4) Contour Application

FULL RANGE

8XT_FR 12XTP_FR LF/HF shelving FOH

8XT_FI 12XTP_FI Flat contour Distributed

8XT_MO 12XTP_MO 1/2 space load cond. EQ Floor Monitor

HIGH PASS (100 Hz)

8XT_FR_100 12XTP_FR_100 HF shelving FOH

8XT_FI_100 12XTP_FI_100 Flat contour Distributed

8XT_MO_100 12XTP_MO_100 1/2 space load cond. EQ Floor Monitor

Active stereo 2 way systems

Mode HiQ Presets (LA8) 12XT Presets (LA4) Contour Application

FULL RANGE

HiQ_FR 12XTA_FR LF/HF shelving FOH

HiQ_FI 12XTA_FI Flat contour Distributed

HiQ_MO 12XTA_MO 1/2 space load cond. EQ Floor Monitor

HIGH PASS (100 Hz)

HiQ_FR_100 12XTA_FR_100 HF shelving FOH

HiQ_FI_100 12XTA_FI_100 Flat contour Distributed

HiQ_MO_100 12XTA_MO_100 1/2 space load cond. EQ Floor Monitor

Hybrid stereo passive systems with LF reinforcement

Mode 8XT Preset (LA4) 12XT Preset (LA4) Contour Application

HYBRID (100 Hz Xover)

8XT_SB118 12XTP_SB118 HF shelving FOH

IN A

IN B

12XTPassive

12XTPassive

12XTPassive

12XTPassive

115XT HiQ 115XT HiQ 115XT HiQ 115XT HiQ

IN A

IN B

SB118 SB11812XTPassive

12XTPassive

IN A

IN B