K E I T H M O N K S

TREND SETTERS in the

AUDIO INDUSTRY

Keith Monks RECORD CLEANING MACHINES

T h e record c lean ing mach ines are t r i ed a n d tested p roduc ts w h i c h are used by b roadcas t ing au tho r i t i es , reco rd reta i lers , record l ibrar ies and h i f i shops t h r o u g h o u t the w o r l d . H i f i enthusiasts are also b u y i n g these mach ines in increas ing quan t i t i es as t hey st r ive t o achieve the f i de l i t y w h i c h t hey expec t f r o m the i r discs a n d e q u i p m e n t . A l l f ou r mode l s can be s u p p l i e d w i t h perspex l ids if r equ i red .

B R U S H A S S E M B L Y T h e brush assembly features an ingenious suspens ion sys tem w h i c h a l lows the brush to a p p l y va ry ing degrees o f pressure o n to the record su r face , depend ing on h o w d i r t y the record is. T h e brush b l ock con ta ins a n u m b e r o f sma l l holes t h rough w h i c h the l i q u i d f l ows o n t o the brush to ensure even d is t r i ­b u t i o n over the p lay ing sur face o f the r e c o r d .

T h e brush assembly is in po l i shed a l u m i n i u m a n d the brush i tself is m a d e f r o m tapered n y l o n br ist les to achieve m a x i ­m u m s c r u b b i n g e f f i c i e n c y . It is eas i ly removab le a n d can be kep t c lean by wash ing in a l ight s o l u t i o n o f soap and wa te r .

Separa te brushes and b locks are avai lab le f o r 7 " a n d 1 0 " records .

S U C T I O N A R M A l l arms are cons t ruc ted f r o m an e x t r e m e l y l ight and r ig id a l u m i n i u m s tem w i t h enough free m o v e m e n t t o a l l o w the m i n i m u m pressure o n the sur face o f the reco rd . T h e h igh grade P T F E n o z z l e has a h igh l y po l i shed su r face , us ing jewel lers rouge , to prevent damage and the un ique n y l o n th read assembly acts as a c u s h i o n be tween n o z z l e and r e c o r d .

M a r k II and M a r k III mach ines have th read mo to rs m o v i n g a t very s l o w speed , the th read being pu l l ed t h rough by the s u c t i o n ; th is ensures that the passageway is kep t c lear . O n Mode l s C R - 5 0 1 and C R - 5 0 2 this o p e r a t i o n is p e r f o r m e d m a n u a l l y .

R C M M k II

C R - 5 0 1 (Packed we igh t 16 1 / 2 kgs.) T h i s m a c h i n e is des igned for the h i f i enthus iast or fo r the smal l rad io s t a t i o n . L i m i t i n g fac to r is the tu rn tab le and it is advisable to c lean say o n l y 10-20 records in a day . F i n i s h e d n o r m a l l y in w h i t e p las t ic laminate a n d the p last ic cover is supp l i ed as an op t i ona l e x t r a .

M A R K 2 (Packed we igh t 3 3 1 / 2 kgs.) Pro fess iona l single deck m a c h i n e used by rad io s ta t ions , g r a m o p h o n e l ibrar ies and busy and act ive record c lean ing cent res. " S t a t e o f the A r t " p ro fess iona l m a c h i n e .

C R - 5 0 2 (Packed we igh t 1 Tk kgs.) V e r y s im i la r t o C R - 5 0 1 , o n l y ma in excep t ions being a s t ronger d i rec t dr ive tu rn tab le and s t ronger meta l deck . A p p l i c a t i o n is the h i f i en thus ias t , radio s t a t i o n , D . J . , smal l h i f i s to re , g r a m o p h o n e l ib rary and s o u n d ins t i tu te .

M A R K 3 (Packed we ight 6 2 kgs.) Pro fess iona l d o u b l e mach ine to the ope ra to r w h o wants the best w i t h a h igh vo lume use. Essent ia l w h e n a large n u m b e r o f records are c leaned in a day .

O p e r a t i o n a l on 1 1 0 / 2 4 0 vo l t A C 50 or 6 0 c y c l e s . (Please specify)

C R 5 0 1

Experts agree ' T h e only effective way of cleaning records". K e i t h M o n k s R e c o r d C lean ing Mach ines are used by over 9 ,000 b roadcas t ing au tho r i t i es , rad io s ta t ions , record l ibrar ies and dealers t h r o u g h o u t the w o r l d .

R e c o r d s are c leaned us ing a 5 0 / 5 0 m i x t u r e of d i s t i l l ed wa te r a n d indust r ia l m e t h y l a t e d sp i r i t w h i c h w i l l remove grease, ha rdened sludge a n d e m b e d d e d gr i t . T h e d ry ing process removes all t race o f the c lean ing l iqu id and fo re ign mat te r , leav ing the sur face o f the record c lean and d r y .

D u r i n g the process the tu rn tab le revolves at speed and the l i q u i d so lvent is app l i ed by sw ing ing the brush over the record and depressing the app l i ca to r p lunger . W i t h the sur face o f the record we l l l ub r i ca ted , pressure and sc rubb ing a c t i o n m a y be app l i ed to the brush w i t h o u t damage to the sub t le h igh f r equency m o d u l a t i o n s .

T h e sc rubb ing ac t i on dissolves grease and loosens any e m b e d d e d ma te r i a l , after w h i c h the suc t i on arm is s i m p l y r emoved to the centre of the reco rd . A s the l i qu id o n the record is mov ing to the edge, due to cent r i fuga l f o r c e , v a c u u m i n g takes place f r o m the centre o u t w a r d s . Its o w n s u c t i o n ho lds the arm to the sur face and the t r ack ing m o t o r moves it ou twards across the g rooves , remov ing all l i qu id a long w i t h the suspended fore ign mat te r and leaving the sur face of the reco rd c lean and d r y .

T h e w h o l e process can be c o m p l e t e d in abou t 1% minu tes per s ide. If the cor rec t l i qu id is used and t h e v a c u u m process is w o r k i n g n o r m a l l y , no leach ing o f the record sur face occu rs . It is s t rong ly advised no t to use i sop ropy l o r m e t h a n o l .

R C M M k III

FOUR MODELS TO CHOOSE FROM C R 5 0 2

Each model is designed for a particular section of the market. If in any doubt please write, telephone or telex for details.

Keith Monks RECORD CLEANING ACCESSORIES

K M A L / S / B A R E C O R D S W E E P E R T h e " R e c o r d S w e e p e r " is a dev ice fo r keep ing d ry dus t and d i r t of f a r e c o r d . It is f i n i shed in a t t ract ive b lack mat t f in i sh and comes in a smar t p resenta t ion b o x . It has an ad justab le height c o n t r o l , w i t h so l id r o u n d base for ease of a t tachmen t t o the t u rn tab le t o p .

The " R e c o r d S w e e p e r " uses an ima l hair t o c lean the reco rd and has coppe r wi res in con tac t w i t h the c lean ing hairs to discharge s ta t ic f r o m the record via the earth lead (suppl ied) to the chassis of the record deck .

K E I T H M O N K S R E C O R D C A R E K I T Th i s k i t cons is ts o f the ' K l e a n S w e e p ' w h i c h is a p las t ic ho lde r , w i t h a spec ia l l y t reated ve lvet pad f o r r emov ing dus t f r o m the sur face o f the r e c o r d . A sma l l capsu le o f ant is ta t ic f l u i d is i n c l u d e d and a f ew d rops o n the pad helps to remove s ta t i c . In the p las t i c ho lde r is a sma l l n y l o n brush to c lean accumu la ted mat ter f r o m the s t y l u s .

K M A L / S / R S R E C O R D S L E E V E S S o l d in packs of 10 o r in boxes of 1 0 0 0 . These are 1 2 " paper sleeves w i t h spec ia l new high dens i t y p las t ic l iner w h i c h helps t o reduce s ta t ic o n the sur face o f the r e c o r d .

K E I T H M O N K S C L E A N I N G F L U I D A specia l h igh qua l i t y c leaner designed o r i g i na l l y for c lean­ing the p ins o n the M 9 B A T o n e A r m , b u t due t o the unusua l qua l i t ies it is usefu l fo r c lean ing in m a n y app l i ca ­t i ons . N o n f l a m m a b l e , non co r ros i ve , non vo la t i l e , n o n exp los ive and a p leasant c lean a roma m a k e th is a popu la r p r o d u c t .

Keith Monks TURNTABLE ACCESSORIES

K M A L / D L K L E V E L L I N G K I T T h i s accessory inc ludes the sp i r i t level and f o u r ad justab le feet w h i c h are p laced under each co rne r o f the t u rn tab le . E a c h adjustable f o o t is d a m p e d t o reduce rumb le f r o m the tu rn tab le and has a fe l t pad to p ro tec t the tab le or she l f u p o n w h i c h the tu rn tab le rests. E a c h f o o t has a t h u m b sc rew ad jus tment fo r raising o r l owe r i ng its o w n co rne r o f the tu rn tab le and is f i n i shed in a t t ract ive b lack ma t t m e t a l .

T h e sp i r i t level is in a sma l l r ound meta l b lack case and l ike the ad justab le feet i t has a peel o f f paper cover under w h i c h is a sel f -adhesive base. T h e best pos i t i on fo r the sp i r i t level is o n the t o p o f the tu rn tab le near the arm rest. A s a h igh qua l i t y l eve l , i t has the advantage o f a very f ine ad jus tment w h i c h enables the tu rn tab le t o be as near per fec t l y level as p r a c t i c a l . T h e ope ra t i on o f the p i ck -up arm and car t r idge o n the record is t h e n i m p r o v e d , and the l i fe o f the s ty lus is p r o l o n g e d .

It s h o u l d be no ted however tha t it is easier t o level a t u r n ­tab le us ing three o f the fee t , o n e ad justab le f o o t in the cent re at the back o f the tu rn tab le and the o the r t w o one at each co rne r at the f r on t .

K E I T H M O N K S R E C O R D W E I G H T T h i s we igh t is very useful fo r records tha t are w a r p e d o r those that have a t endency to w a r p . In a d d i t i o n it is usefu l t o have a we igh t o n the record to act as a s tab i l i s ing in f l uence and to increase the record to mat t o p lat ter c o n t a c t area w h i c h helps to reduce u n w a n t e d v i b r a t i o n .

F r o m t ime t o t i m e it is adv isable t o have y o u r records c leaned o n a K e i t h M o n k s Pro fess iona l R e c o r d C lean ing M a c h i n e . A l ist o f centres is ava i lab le on request .

Keith Monks TONE A R M

M9BA MK3 (Improved) LABORATORY PICK UP ARM

K M A L Low-Mass Damped Unipivot Pick-up A r m . T h e adven t o f p i ck -up cart r idges o f l o w mass and very h igh c o m p l i a n c e des igned t o t r ack at pressures o f 1 gram or less has e x p o s e d the l im i ta t i ons o f the vast ma jo r i t y o f c o n v e n ­t iona l p i c k - u p arms a n d given rise to ser ious p rob lems o f c o m p a t i b i l i t y , a fact w h i c h is re f lec ted very c lear l y in the co r respondence f i les o f the a u d i o jou rna ls . These p rob lems arise f r o m t o o large a mass , re la t ive ly high i ne r t i a , excessive f r i c t i on and in s o m e cases lack o f d a m p i n g .

T h e basic requ i rements o f a p i c k - u p arm for universal app l i ca t i on to cart r idges o f the highest grade are f e w . It is essent ia l ly a passive dev i ce , a n d , l i ke every o ther i t em o f h igh qua l i t y s o u n d rep roduc ing e q u i p m e n t , shou ld be neutra l and se l f -e f fac ing . It is requ i red t o s u p p o r t the car t r idge in the c o r r e c t pos i t i on at t he co r rec t pressure wh i l e o f f e r i ng negl ig ib le resistance t o its m o v e m e n t in a lateral o r ver t ica l d i r e c t i o n , bu t pe rm i t t i ng no m o v e m e n t in the d i r e c t i o n o f the g roove . T h e demands w o u l d no t seem u n d u l y d i f f i c u l t t o mee t , un t i l the imp l i ca t i ons of un iversa l i t y and neu t ra l i t y are c o n s i d e r e d . In p rac t i ce , t hese i m p l y :

1. Low mass, i.e. " e f f e c t i v e " mass , the m o v i n g mass as seen by the s t y l u s , no t the phys ica l we igh t o f the a r m , in o rder t o ma in ta in s t a b i l i t y , impose as l i t t le w o r k as poss ib le on the s ty lus and ensure tha t the f u n d a m e n t a l l o w f r e q u e n c y resonance o f a rm mass w i t h car t r idge

c o m p l i a n c e does no t fa l l i n t o the f r e q u e n c y region o f sur face i r regular i t ies and m o t o r r u m b l e w h i c h m igh t exc i t e i t .

2 . Low friction and inertia so tha t the groove m a y have as l i t t le t o d o as poss ib le , m i n i m a l t r ack ing we igh t m a y be e m p l o y e d and sur face i r regu lar i t ies , i n c l u d i n g warps t r acked w i t h o u t t r oub l e .

3 . Adequate damping, espec ia l ly in un i p i vo t designs to ensure s tab i l i t y b y the c o n t r o l o f to rs iona l m o v e m e n t s , d a m p resonances and reduce suscep t i b i l i t y to ex te rna l s h o c k s .

4 . Accurate balance in b o t h planes fo r s tab i l i t y and o p t i m u m car t r idge p e r f o r m a n c e .

5 . Bias (or "skating") correction to enab le m i n i m u m t rack ing we igh t t o be u s e d , ensure even wear o f s ty lus and d isc and equal ise t rac ing o f b o t h stereo c h a n n e l s , w i t h even c ross ta lk .

These are the essent ia ls , t o w h i c h mus t be added a w ide range of ad jus tments to a c c o m m o d a t e car t r idges o f d i f f e ren t mass , tu rn tab les o f d i f fe r ing he igh t , d i f fe rences in requ i red t rack ing we igh t a n d to enab le accura te a l i gnmen t fo r m i n i m u m d i s to r t i on w i t h any ca r t r i dge .

T h e r e can never be too l i t t le f r i c t i on in a p i c k - u p a r m ; o n l y t o o m u c h . Measured va lue s h o u l d no t exceed 5%

o f the t r ack i ng we igh t app l i ed to any car t r idge in use, and is p re fe rab ly a good deal less. T h i s

requ i rement is no t i m p o s e d p r i m a r i l y by the necessi ty fo r the arm to m o v e f ree ly across

the p lay ing su r face , bu t to enab le it t o f o l l o w the eccen t r i c i t i es o f the p ress ing ;

hence l o w ver t ica l f r i c t i on is even m o r e i m p o r t a n t than l o w lateral

f r i c t i o n . Measurements o n a n u m b e r o f arms ind ica te

tha t lead to rque is respon­s ib le f o r a ve ry large

p r o p o r t i o n o f resistance t o m o v e m e n t , espec ia l ­l y in a ver t ica l d i r e c t i o n

T h e fac t t ha t in the K M A L arm there are

no lead-out wires is the re fo re s ign i f i can t . T h e

* r u n i p i v o t p r i nc ip le has a l ­

ways been at t ract ive to designers because o f its i n ­

he ren t l y l o w f r i c t i ons , and in th is e x a m p l e , t h e o n l y p i c k - u p a r m in the w o r l d w i t h o u t lead-out w i r e s , t h e y are reduced to the po in t o f i ns ign i f i cance .

T h e p rob lems o f the u n i p i v o t have been those o f s tab i ­l i t y and t o r s i o n . These are o v e r c o m e in the design by the use o f s i l i cone f l u i d d a m p i n g app l i ed a r o u n d the p i vo t in a u n i q u e manne r .

T h e a r m itself consis ts o f a s t ra ight t ube o f l igh t a l l o y , w i t h a f i xed headshel l o f fse t at the car t r idge e n d . C o u n t e r ­ba lance is p rov ided by an eccen t r i c c o u n t e r w e i g h t , f l e x i b l y d e - c o u p l e d f r o m the a rm beh ind the p i vo t . A d j u s t m e n t of th is we igh t also prov ides lateral ba lance and t r ack i ng we igh t ad jus tmen ts . T h e we igh t is in te rchangeab le to a l l o w the use of car t r idges we igh ing in excess o f 7 g rams, if necessary.

T h e p ivo t cons is ts o f a hardened a n d po l i shed steel need le , the p o i n t rest ing in the cen t re o f a p rec is ion m in ia tu re ball race, f i x e d i n to one end o f a shor t meta l t ube in the cent re of a boss . T h e o t h e r , o p e n , end o f th is tube rests in a bath o f s i l i cone d a m p i n g f l u i d c o n t a i n e d in a sma l l c u p . O u t s i d e this t u b e , and p ro jec t ing d o w n w a r d s in the same d i r ec t i on are f ou r stain less steel p i n s , w h i c h d i p in to cav i t ies in a p las t ic insert in the p i l l a r , each w i t h a c o n t a c t in the base

to w h i c h the c o n n e c t i n g wires to t he p re -amp l i f i e r are s o l d e r e d . T h e cavi t ies are f i l l e d , b y the user , w i t h m e r c u r y f r o m the s u p p l y p r o v i d e d . T h e o the r ends o f these pins are c o n n e c t e d t o the car t r idge in the n o r m a l w a y b y f ine wires r unn ing t h rough the a rm tube to the headshe l l . Bias o r ska t i ng c o m p e n s a t i o n is e f fec ted by a magnet m o u n t e d in the p i l la r under the c o n t a c t c u p s , w h i c h exer ts an at t ract ive fo rce o n the steel p ins ca r r y ing the g r o u n d leads f r o m the ca r t r i dge . A n integral l i f t ing a n d l o w e r i n g dev ice o f the d a m p e d , h y d r a u l i c t y p e is a t tached to the p i l la r . Overhang ad jus tmen t is p rov ided by a s l i d ing base.

T h e magne t i c bias c o m p e n s a t i o n sys tem e m p l o y e d in th is a rm is e legant , f r i c t i on less , des igned fo r s ty lus pressures u p to VAg.

Ex tens i ve tests o f th is a rm have been u n d e r t a k e n , using m o s t o f the top - f l i gh t car t r idges, i n c l u d i n g the S h u r e V . 1 5 / 1 1 1 , A D C / X L M , B . & 0 . S P . 1 5 , O r t o f o n M 1 5 E S u p e r , S t a n t o n 681 E E and o thers . C o m p a r i s o n s have been made w i t h the pe r fo rmance o f these car t r idges in o t h e r a rms , and i t has been f o u n d tha t in every case car t r idge pe r fo rmance in the K M A L arm is equal t o o r bet ter t han tha t o b t a i n e d unde r o t he r c o n d i t i o n s o f use.

SPECIFICATION

T h e s p e c i f i c a t i o n o f the arm given is the average resul t o f sets o f measurements t a k e n o n d i f fe ren t samples o f the a rm under

d i f f e ren t c o n d i t i o n s .

N O T S U I T A B L E F O R P O R T A B L E U S E

A r m leng th , p i vo t to S t y l u s n o m i n a l 9 inches f r o m s ty lus to p ivo t .

Rear overhang 2 1 / 2 " radius c learance to rear f r o m p ivo t cen t re .

Car t r i dge A c c e p t a n c e S tanda rd V e r s i o n ( L ) : f o r car t r idges we igh ing 5—7 grams des igned to t rack at p lay ing weights not in excess o f 114 grams.

A l t e r n a t i v e V e r s i o n ( H ) : as above but fo r car t r idges we igh ing 7—8 grams.

Spec ia l V e r s i o n ( S ) : f o r car t r idges w i t h high t r ack i ng weights i.e. D e c c a 4 ( L o n d o n ) .

He igh t , T u r n t a b l e s su i tab le fo r t u rn tab le o f 1.25 to 2 .5 inches he ight w i t h a n o m i n a l car t r idge dep th o f 0 . 6 2 5 inches .

T r a c k i n g E r r o r Z e r o at 2 . 3 7 5 " ar ranged f o r m i n i m u m d i s t o r t i o n — m a x i m u m ef fect ive second h a r m o n i c d i s t o r t i o n due t o t r ack ing er ror 0 . 5 8 % (re lated to a recorded ve loc i t y o f 1 0 c m / s e c ) .

E f f e c t i v e Mass. f S t a n d a r d vers ion .. .. 6 grams re f lec ted at the s ty lus t i p , and set to t rack at 1 g ram.

L o w F r e q u e n c y Resonance 1 3 H z fo r 6g car t r idge mass at 2 5 c u . d y n a m i c c o m p l i a n c e at 1g. pressure.

M o m e n t o f Inert ia 5.8 x 1 0 3 c m square

P i v o t F r i c t i o n Less than 4 m g lateral and ve r t i ca l .

W i r i n g S y s t e m 4 w i re c o d e d to B . S . 1 9 2 8 : 1 9 6 5

L e a d C a p a c i t y co re to screen 8 0 pf .

L e a d T e r m i n a t i o n P h o n o p l u g s — c o l o u r c o d e d .

L e a d length 1 met re

A d d i t i o n a l ca r r y i ng arms avai lab le to o rder

A l t e r n a t i v e coun te rwe igh ts f o r conve rs ion o f s tandard to a l ternat ive arms etc . ava i lab le t o o rder . (L) C o d e d Y e l l o w , fo r car t r idges we igh ing 5—7 grams. (H) C o d e d R e d , fo r car t r idges we igh ing 7—8 grams. (S) C o d e d B l u e , specia l f o r D e c c a IV ( L o n d o n ) ca r t r idge .

S l i d i n g base Enab les M a r k 2 a rm p i l la r ad jus tmen t in lateral p lane whe re va r ia t i on m a y be requ i red w h e n us ing spare arms w i t h d i f fe ren t car t r idges. ( A l r e a d y supp l i ed in M a r k 3 vers ion) .

Ca r t r i dge f i x i n g l igh twe igh t n y l o n screws (8 B . A . )

Keith Monks PHASE RITE-PHASE TESTER

R E C E I V E R T R A N S M I T T E R

THE PHASERITE - A Phase Tester for all Sound Systems

T o avo id cance l l a t i on o f s igna ls , u n w a n t e d d i s t o r t i o n , u n ­even f r e q u e n c y response a n d o the r de le te r ious ef fects in any s o u n d s y s t e m , i t is i m p o r t a n t t o ascer ta in whe the r or not a phase reversal is t a k i n g p l ace .

Phase reversals can o c c u r in m i c r o p h o n e s , cab les , amp l i f i e rs or l o u d s p e a k e r s , a n d s ince any one phase reversal can a f fec t the sys tem as a w h o l e , it is essent ia l t o i den t i f y the o f f e n d i n g i tem w i t h c e r t a i n t y . T h i s the P H A S E R I T E w i l l d o .

T h e Phaser i te is a t w o - u n i t device of soph is t i ca ted e lec t ron i c des ign , enab l ing y o u t o tes t , accu ra te l y and s p e e d i l y , the phase o f any m i c r o p h o n e , l o u d s p e a k e r , a m p l i f i e r , cab le o r f i l te r , or any o ther i t em of a u d i o e q u i p m e n t , i n o rde r tha t the same phase re la t i onsh ip m a y be de te rm ined and m a i n ­ta ined t o ensure tha t al l i nd i v i dua l i tems of the s y s t e m , o r the sys tem as a w h o l e , are w o r k i n g e f f i c i en t l y and c o r r e c t l y .

T h e P H A S E R I T E is des igned t o test any o f the i tems m e n ­t i o n e d above , i nd i v i dua l l y as fast as the par t i cu la r p iece o f apparatus c a n be c o n n e c t e d i n to the test r ig (no rma l l y in seconds ) , o r c o m p l e t e s o u n d or record ing s tud io i ns ta l l a t i ons , pub l ic -address and s o u n d - r e i n f o r c e m e n t sys tems can be tested w i t h o u t d i s tu rbance o f the i ns ta l l a t i on . A no rma l P H A S E R I T E tes t - t ime fo r an i nd i v i dua l p iece of e q u i p m e n t w o u l d be 10 s e c o n d s , a n d f o r a sound -s tud io o r P . A . ins ta l l ­a t ion c o m p r i s i n g 10 m i c r o p h o n e s , f ive ampl i f ie rs and 20 loudspeakers , less t h a n 3 0 m i n u t e s w o u l d be t y p i c a l .

T h e P H A S E R I T E enables y o u to test and ascer ta in the phase o f any i t em of e q u i p m e n t w i t h o u t d i s tu rbance or d i s m a n t l ­ing o f any k i n d . M i c r o p h o n e s can be tested as rece ived f r o m the m a n u f a c t u r e r , ampl i f ie rs w i t h o u t remov ing the chassis f r o m the case, a n d loudspeakers — single or c o l u m n — w i t h o u t even unsc rew ing the back pane l . T h e fab r i c o r mesh cover ing the f r on t o f the speakers makes n o d i f f e rence to the test o r resu l ts , and does no t have to be r e m o v e d .

T h e P H A S E R I T E enables manu fac tu re rs o f any o f the above-m e n t i o n e d i tems t o test t he i r e q u i p m e n t before d e s p a t c h , and thus achieve " c u s t o m e r s a t i s f a c t i o n " . O w n e r s o f ex i s t i ng e q u i p m e n t can car ry o u t test ing o f the i r e q u i p m e n t in t he i r o w n w o r k s h o p or t es t - room pr io r t o use o n a c o n t r a c t , be i t a " one -n igh t s t a n d " o r a pe rmanen t i ns ta l l a t i on .

T h e P H A S E R I T E is po r tab le , l ight in we igh t , a n d c o n v e n i e n t t o car ry a n d use. It is designed for one - o r t w o - m a n ope ra ­t i o n , and is ba t t e r y -powered by s t a n d a r d , eas i l y -ob ta inab le bat ter ies . T h e cases are c o n s t r u c t e d o f h i gh - impac t p o l y ­s t y r e n e , and b o t h un i ts car ry a 1 2 - m o n t h guarantee against f a u l t y c o m p o n e n t s or c o n s t r u c t i o n . If a cc i den ta l l y d a m a g e d , al l parts are rep laceab le , and a m i n i m u m charge w i l l be m a d e , va ry ing w i t h the degree o f damage.

Keith Monks IMPEDANCE TESTER

Keifli Monks MICROPHONE SPLITTER BOX T h e M S / 7 M i c r o p h o n e Sp l i t t e r B o x is des igned fo r use where c o m b i n e d stage, p u b l i c address or s imu l taneous b roadcas t requ i rements are n e e d e d . It uses the m i n i m u m numbe r o f m i c r o p h o n e s on stage, a l l ow ing the per fo rmers f r e e d o m of m o v e m e n t , and a c leaner appearance to T V p r o g r a m m e s . T h e r e are 7 d i f fe ren t inputs w i t h 14 o u t p u t s , v ia d o u b l e sc reened , d o u b l e w o u n d , h igh grade capac i t y ba lanced t r ans fo rmers , and even shou ld a sho r t o c c u r there is o n l y a loss o f 0 .5 d b .

A f t e r ex tens ive research , in c o l l a b o r a t i o n w i t h a B r i t i sh b roadcas t ing c o m p a n y , and d e v e l o p m e n t w i t h a ma jo r t rans­f o r m e r m a n u f a c t u r e r , th is high grade m i c r o p h o n e sp l i t te r b o x is n o w avai lab le o n the c o m m e r c i a l m a r k e t . Pa r t i cu la r a t t en t i on has been paid to the re jec t ion o f noise generated by te lev is ion and l ight ing c i r cu i t s .

K E I T H M O N K S M I C R O P H O N E S P L I T T E R

B O X M S / 7

T h e impedance meter measures q u i c k l y and accu ra te l y speaker l i ne , t rans fo rmer and m i c r o p h o n e impedances f r o m a d i r ec t sho r t t o open c i r c u i t . It has three test f requenc ies and the f ac i l i t y of using an ex te rna l aud io f r equency generator .

S P E C I F I C A T I O N

Range 11 s w i t c h e d ranges f r o m 10 o h m s to 1 Meg o h m F . S . D .

Accuracy ± 5 % 100 K o h m s and b e l o w . ± 1 0 % above 100 K o h m s l i m i t e d by a p p r o x . 20 pf i n p u t capac i t ance .

Power 2 , P P 3 batter ies at n 7 m A w h e n in ca l ib ra te Requirements mode — r is ing to fi 10 m A w h e n test ing a

100 si source a n d n 25 m A w h e n test ing a 10 n sou r ce .

Test In ternal : - (nomina l ) 100 H z , 1 k H z and Frequencies 1 0 k H z .

E x t e r n a l : - 2 0 H z t o 2 0 k H z s u p p l i e d v ia s ide X L R 1/P socke t at a p p r o x i m a t e l y 1 V P-P a m p l i t u d e .

Test Voltage A p p r o x i m a t e l y 1 V P-P is app l ied to the Impedance under invest igat ion w h e n the meter is at f u l l scale d e f l e c t i o n .

Keith Monks MICROPHONE STANDS

Caster and stability screw of MSW MS/W with BAL 42/4

T h e M S / W has a re in fo rced base assembly w i t h a spread of 8 0 c m s . T h e cen t re has a re i n fo r ced m a z a k cast ing a t tached to 4 c h r o m e d s tems w h i c h c o m e ou t h o r i z o n t a l l y a n d te rm ina te in h igh qua l i t y castor whee l assembl ies fo r c o m p l e t e a n d f ree m o v e m e n t . T o a l l o w the f l o o r s tand to be f i x e d and t he s tand to remain s ta t i ona ry in the opera t ing pos i t i on 4 c h r o m e d screws are s i tua ted near the whee l s , these can be sc rewed d o w n t o the f l o o r fo r greater s t a b i l i t y .

MS/W

T h e ver t ica l s tem is the same as the M S / L f l o o r s tand w i t h a he ight va r ia t i on f r o m 1 1 8 c m s (3 ' 1 0 " ) t o 2 0 8 c m s (6 ' 1 0 " ) . T h e to ta l we igh t o f the s tand is 8 .16kg (18 lbs) . T h e b o o m arm su i tab le f o r use w i t h the M S / W is the B A / L 72 or B A / L 4 2 .

•4 MSL14 , MSL22 A s t rong heavy d u t y f l oo rs tand f o r m i n g the base f o r the s tud io ser ies. T h e cen t re cas t ing at the base has f o u r s o l i d steel de tachab le legs.

M S L 1 4 - 14 i nch legs M S L 2 2 - 2 2 i n c h legs

T h e te l escop i c sect ions are i n 1 " and % " steel t ube w i t h posi t ive l ock ing hand nu t , supp l i ed w i t h 3 / 8 " th read adap to r ( removed w h e n used w i t h b o o m arms) . M a x i m u m he ight 2 0 8 c m s (6 ' 1 0 " ) .

E X T E N S I O N T U B E E X T / 1 T h e m a i n pu rpose o f t he E X T / 1 is to lengthen the B A L 4 2 and B A L 7 2 by 3 6 " ( 9 1 m m ) . D u e to its c o n s t r u c t i o n , i t can be s t o w e d away ins ide the B A L b o o m , w h e n no t in use. F i n i s h e d w i t h 3 / 8 " W h i t w o r t h t h r e a d .

MS/L 14" with BAL/42/2 EXT/1

The 'Studio' Series of Large Stands and Booms The Studio series are finished in top quality polished chromium plate on steel with all unplated components finished in matt black. The Floorstand is strongly built with a casting forming the base which has four detachable solid steel legs either 14" or 22" in length, with rubber feet. The main upright is a 1" tube and a % " inside telescope tube. The adjusting hand nut is turn locking with nylon bushes to ensure hard wear and reliable service.

The Boom Arms to suit the stand are available in 42" and 72" lengths and have a 2.ib and 4.lb detachable counterweight according to choice. The locking device is a single action "clutch" design which is free from creep and is positive locking.

The booms can be further extended in length by 36" when using the EXT.1 extension rod.

All the studio series parts are in te rchangeab le making them very adaptable and economical to use.

The one action locking device uses a 3" neo-prene clutch plate giving a positive position lock.

MS/L22 with B A L 72/4 Keith Monks Floor Stands and accessories are manufactured from high quality materials and the greatest care is taken to ensure the highest quality of finish making them attractive and long lasting. The designs have been studio approved over many years and are used by leading Broadcast Companies and Sound Studios throughout the World. It has been by listening to comments from the users of our previous equipment that we have now the most adaptable and useful range available.

The detachable legs are fitted quickly and easily, tiie threading is well spaced and has a long lead in ensuring a "first time" fit.

The counterweights of 2 lbs. and 4lbs. are removable and interchangeable.

S P E C I F I C A T I O N S T U D I O SERIES M O D E L F L O O R S T A N D B O O M A R M T H R E A D S T U D I O 1 Standard with 4 x 14" Legs 72" long 2lb counterweight 3 /8 " Continental 8' s / s " -27 S T U D I O 2 With 4 x 2 2 " Legs (55cms) 72" Long (162 cms) 4 lb counterweight 3/8 " Cont inenta l& 5 / 8 " -27 S T U D I O 3 With 4 x 22" Legs 4 2 " Long (107 cms) 4lb counterweight 3 /8 " Continental & S/8 "-27 S T U D I O 4 As S T U D I O 2 but with E X T / 1 Extension enabling maximum length of boom 100" (254 cms) 3 /8 " Cont inenta l& 5 / 8 " -27 S T U D I O 5 As S T U D I O 3 but with E X T / 1 Maximum length 78" (198 cms) 3 /8 " Continental & 5 / 8 " -27

MS/M Microphone Stand with BA/M Boom Arm

M S / M with B A / M (See back page for colour versions) A good general purpose medium weight stand to suit occasions when space is at a premium. The 14" long legs of % " steel make it stable and the matching boom has the same locking action as the large studio booms. The ends of the boom are threaded one 5/8" and the other 3 /8" as is the counterweight, to allow for variations in microphone fittings by moving the weight to the other end.

NEW FOLDING LEG STAND AND BOOM

* N 0 V E L QUICK

RELEASE LEGS

* LIGHT WEIGHT

AND STURDY

* CHROME FINISH

* UNIQUE ONE

ACTION BOOM

*WEIGHT OF

MS/F3 IS 1.9 Kg.

* QUICK RELEASE

HEIGHT ADJUSTMENT

M S / F 3 S T A N D WITH B A / S B O O M

M S / F 3 A new lightweight folding leg stand and boom arm with height adjustment from 3 8 " to 69" . The B A S boom is similar to B A M and both stand and boom are finished in black and chrome.

T H R E A D A D A P T O R S A w i d e range o f th read adaptors are avai lab le as one can see in the p h o t o g r a p h . A l l the adaptors ava i lab le are t o be seen in

order c o m m e n c i n g w i t h the S T A 3 o n the t o p left to S T A 18 on the b o t t o m r ight . Please see char t fo r deta i ls .

T H R E A D A D A P T O R S N o . Inside Thread Outside Thread Finish S T A 3 5 / 8 " 27 TPI V2" 26 BSB Aluminium S T A 4 14 " 26 & V 'Whi t .

S / 8 " 2 7 T P I Brass S T A 5 5 / 8 " 2 7 T P I V 'Whit . Aluminium S T A 6 V 'Whi t . 14" 26 BSB Brass S T A 7 1/4"26 BSB V'Whit . Aluminium S T A 8 5 A6"Whitworth % " 26 BSB Brass S T A 9 ^ " W h i t . (M336) V 'Whit . Chrome Plated Brass S T A 10 1 / a " & 3 /8"Whit.(M337) V' 27 TPI Brass S T A 11 V 'Whi t . (M338) y 2 " W h i t . Chrome Plated Brass S T A 12 V ' 2 7 TPI (M339) y 2 " W h i t . Chrome Plated Brass S T A 13 S / 8 " 2 7 T P I S/16" BSF Brass S T A 14 26 TPI S A 6 " B S F Brass S T A 15 V ' 2 7 TPI % " B S B Steel S T A 16 Special for B . B . C . S T A 17 % " 2 7 T P I V 'Whi t . Aluminium S T A 18 5 A6"Whi t . 5 / 8 " 27 TPI Brass S T A 19 5 / 8 " 27 TPI None Aluminium S T A 20 7 8 " 27 TPI & 7 8 " 26 TPI None Aluminium S T A 21 None 7 8 " 27 TPI &

V 'Whi t . Steel S T A 22 None S / 8 " 2 7 T P I Steel

S B / 1

S C / 1

Showing example of SB/1 & SC/1

SB1 (TV 'Whit.) S B 2 ( s / s " U S A ) A light allow casting finished in matt black makes this stereo bar look attractive. It has a 9 " spacing between microphone fixing points and is supplied with two captive locking screws for the microphone clamps.

SC1 ( 3 / s " W h i t . ) S C 2 ( 5 / s " U S A ) Matching the stereo bar this side clamp is a most use­ful accessory. It can be used on tube diameters of 14" to 1%" giving the possibility of fitting this to any position on a stand or boom from top to bot tom.

MC1 ( 3 / 8 " W h i t . ) MC2 ( 5 / 8 " U S A ) Spring grip microphone clamp gives easy insertion and release of the microphone from the stand. Rubber pads protect the microphone finish and grip securely.

M S / F 2 F O L D I N G L E G G E D F L O O R S T A N D The M S / F 2 is a light 3.5 kg. (6V4 lb) microphone floor stand which is also very stable and adaptable, with easily adjusted folding legs. The finish of the base is black wi th 3 / 8 " Whit-worth but also % " (26) TPI . The legs are swung around in an arc of 180 degrees and each is attached to a screwed spring which can be tightened for extra stability. These springs also afford a certain amount of anti shock protection. The stem has two height adjustments which give a wide range of 71 cms (28") to 183cms (72"). This very adaptable stand is useful for portable work or where a wide range of height is required but due to its lightness it is not suitable to be operated with a boom arm.

M S C T / 2 cast base stands are suitable for most applications where portability is not important. The matt black mazak casting is 5.5 kg. in weight and the tube assembly is polished chromed steel. Stand termin­ates in % " Whitworth and % " 27 TPI threads. Height: 96- 175cm (38"- 69"). Suitable boom arm is B A / M .

M S C T / 3 . New low version of M S C T / 2 which enables operator to van' height from 51-89cm (20"-35") .

E X T 1 The extension rod will fit the MSM and M S C T floor stands to increase their height. Also the B A L boom arms can be lengthened by the use of this accessory as in the studio series.

M S C T / 3

DB1 D R U M B O O M This drum boom enables an additional microphone to be used from the stem of the M S C T or MSM stands giving a 360 coverage in a 28' length from the clamp. This may also be used on the B A L boom arms giving an extra boom from the one stand. DB/1 2 1 " (.53) minimum to 3 4 " (.96) maximum length. D B / 2 3 6 " (.915) minimum t o 6 6 " (1.68) maximum length.

D B / 1 D B / 1

CF1 This 6' fitting is supplied with two DB1 drum booms and is designed to be used as a ceiling or wall fitting where studio floor space is at a premium keeping the area clear of stands and cables.

I

GOOSENECKS

* Available in black

D B / 2

CF1

D B / 2 . D R U M B O O M

D B / 1 . D R U M B O O M

Cable exit for use with Flex range *F lex A D Mounting block to mount Flex range at 90 to Flex PMR.

(STA21 or S T A 2 2 required) *F lex M B Panel mounting ring for use with Flex range.

(STA21 or S T A 2 2 required) *F lex PMR

X L R T Y P E C O N N E C T O R S 3 pin line socket (Female) N C 3 / F C 3 pin line plug (Male) N C 3 / M C 3 pin chassis socket (Female) N C 3 / F P 3 pin chassis plug (Male) N C 3 / M P

DIN T Y P E C O N N E C T O R 3 pin Din locking line socket (Female) CON451

Thread adaptor to fit Flex 30/1 or 60/1 to Flex MB or Flex PMR S T A 2 1 Thread adaptor to fit Flex 30/2 or 60/2 range to Flex MB or

Flex PMR S T A 2 2

30cm Gooseneck with ^ S " Whitworth male and female threads Flex 30/1 30cm Gooseneck with * / 8"27TPI male and female threads *F lex 30/2 60cm Gooseneck with /8"Whitworth male and female threads Flex 60/1 60cm Gooseneck with 7 8 " 27 TPI male and female threads 60/2 30cm Gooseneck with Is" 27 TPI female thread and

X L R socket *F lex 3 0 / 2 / X L R 60cm Gooseneck with S / 8 " 2 7 T P I female thread and

X L R socket Flex 6 0 / 2 / X L R

15cm Gooseneck with % " 27 TPI female thread and DIN Flex 15/2/DIN 30cm Gooseneck with 7 8 " 27 TPI female thread and DIN Flex 30/2 /DIN 60cm Gooseneck with 7 8 " 27 TPI female thread and DIN Flex 60/2 /DIN 30cm Gooseneck with male and female X L R

connectors *F lex 3 0 / X L R / X L R 60cm Gooseneck with male and female X L R

connectors *F lex 6 0 / X L R / X L R

S S / 2 A S S / 2 B

B S / 2 / B

B S / 1 / B

B A N Q U E T I N G S T A N D S • These tab le stands in two d i f f e ren t sizes have a t e l escop i c tube w h i c h can be f i t ted at an angle as s h o w n , or upr igh t . T h e cast base is f i t ted w i t h a rubber m a t to avo id table scratches and m i n i m i s e v i b r a t i o n .

Max height Min height Weight B S 1 / B 2 1 " 1 2 " 4 % lbs B S 2 / B 3 2 " 1 7 " 8 / 4 lbs

B o t h s tands te rm ina te in 3 /s " W h i t w o r t h and 1 / 2 " 26 T P S th reads .

T A B L E S T A N D T h e T S / 2 is a smal l c o m p a c t tab le s tand w i t h a f i xed height o f WAcms ( 4 " ) and 4 y 2 c m s T h r e e screw- in so l i d legs each 4 " long are a t tached to the base m a k i n g this mode l very s table. T h e we igh t o f the T S / 2 is .34 kg . (% lb ) .

T S / 1

T A B L E S T A N D A T h e T S / 1 tab le s tand has 3 f i xed he i gh t s2%cms (1 " ) , 9%cms (3%") and 14%cms ( 5 3 / s " ) . T h e base o f heavy m a z a k is h o l l o w a l l ow ing the c h r o m e stems to be s tored away by means o f 2 screws w h e n not in use. T h e stems are screwed in to the t o p o f the base to give var ious height ad jus tments . A l l the threads are 3 /a " W h i t w o r t h (cont inenta l ) w i t h the we ight o f .57 kg (VA lbs) . N o t e : T y p e 3 1 0 m i c r o p h o n e ho lde r i l lus t ra ted above no t i n c l u d e d .

C A B L E C L I P S C C 1 c l ips are fo r keep ing m i c r o ­phone cables neat and safe ly f i xed to stands and b o o m arms. S u p p l i e d in a packe t of s i x , c o m ­pr is ing t w o o f each s ize .

S11

I D E N T I F I C A T I O N C L I P A smal l card can be s l id in to th is fo r i den t i f i ca t i on purposes fo r t he m i c r o p h o n e stand in use, i.e. m i c r o p h o n e n u m b e r or channe l n u m b e r , users p u b l i c i t y c a r d , e t c .

S S / 2 C

A range of stands p rov id ing s tu rdy suppo r t fo r c o l u m n and box speaker un i t s . 3 f i xed he ights : 9 " t ube , base & b racke t S p e c i f y S S / 2 A 1 8 " t u b e , base & b racke t S p e c i f y S S / 2 B 3 6 " t ube , base & b racke t S p e c i f y S S / 2 C 1 o f each T u b e , base & b racke t S p e c i f y S S / 2

Keith Monks CABLE DRUMS

E v e r y K e i t h M o n k s cable d r u m is a mu l t i - pu rpose car r ier — fo r m i c r o p h o n e , speaker o r power cab les . T h e y ' r e bu i l t o f t ough re i n fo r ced s tee l , w i t h f i rm-s tand ing rubber feet . A n d there are f ou r d i f fe ren t mode l s to su i t every j ob .

* E a c h o n e has a removab le cent re d r u m —use one f r a m e , several reels, t o save t i m e , cos t and space.

* E a c h o n e has a n y l o n - d i p p e d b lack pa in t f i n i sh — hard-wear ing and rust resistant , f o r i ndoo r and o u t d o o r use.

* T h e y al l s tack w i t h o the r f rames o n the same s ize — m a k e r ig id , s table space-savers.

KEITH MONKS PROFESSIONAL CABLE DRUMS

S P E C I F I C A T I O N S (May be changed w i t h o u t p r io r no t i ce )

Nominal Drum Size Dimensions Weight

T y p e Capacity Core Outer A B C D E F G Frame Drum Complete

r n l 50 metres 9 " 1278" x 1 0 m m 89mm 320mm

1 4 V 370mm

16" 406mm

14" 370mm

854" 216mm

2 " 50mm

5" 127mm

878" 225mm

5V4 lbs 2.5 kg

5% lbs 2.5 kg

11 lbs 5 kg

r n _ 50 metres 9 " 17%" x 20mm 230mm 450mm

12" 304mm

20'/ 2" 520mm

2 0 " 510mm

12 3 /s" 315mm

2 " 50mm

6 " 152mm

12" 305mm

12 lbs 5.45 kg

12 lbs 5.45 kg

24 lbs 10.91 kg

r n , 100metres 9 " 17%" O U J x 20mm 230mm 450mm

12" 304mm

20% " 520mm

2 0 " 510mm

18 V' 460mm

2" 50mm

12" 304mm

18 7 /8" 480mm

13 1/ 2 lbs 6.14kg

131/2 lbs 6.14 kg

27 lbs 12.27 kg

n n „ o 150metres 9 " 17%" O U , J O x 20mm 230mm 450mm

12" 304mm

20 1 / 2 " 520mm

2 0 " 510mm

24" 608mm

2" 50mm

18" 456mm

2 5 " 610mm

15 lbs 7 kg

15 lbs 7 kg

30 lbs 14 kg

C D 3

FISH POLES (HAND BOOMS) FOR FILM CREWS, RADIO, TV, STUDIO & O.B. USE

LIGHT-WEIGHT, ADJUSTABLE & FINISHED IN MATT BLACK. 4 MODELS TO CHOOSE FROM.

: I S H P O L E S F P 3 6 7 F P 3 6 5 F P 3 6 4 F P 3 6 3

Model Minimum Length Maximum Length Number

of Sections

F P 3 6 3 2 5 " .66m 6 5 " 1.70m 3

F P 3 6 4 3 7 " .95m 1 0 6 " 2 . 7 0 m 4

F P 3 6 5 4 5 " 1.19m 1 1 4 " 2 . 9 2 m 3

F P 3 6 7 5 3 " 1.38m 1 8 6 " 4 . 7 5 m 4

F ish poles or hand b o o m s are ideal fo r m i k i n g up aud ience reac t ion and c o m m e n t w h e n a no rma l s tand canno t be used. A l l f o u r mode ls are f in ished in ma t t b lack fo r T . V . and f i lm use.

T h e M S C m i c r o p h o n e s tand is the l ightest in o u r range and features ' p lug - in ' legs and a t e l escop i c upr igh t . M a x i m u m height is 6 6 " .

T h e B A S b o o m a rm is su i tab le fo r use w i t h th is s tand and all d r u m b o o m s and accessories w i l l f i t t o the inner s tem of the M S C .

M S C / B A S

• MICROPHONE STAND

• BOOM STAND • SPEAKER STAND •LIGHTING STAND • H O R N STAND •ROBUST •STURDY •QUICK RELEASE HEIGHT ADJUSTMENT • EASY TO ERECT • CHROME AND BLACK FINISH

T h e M T / 1 is adaptab le and due to its c o n s t r u c t i o n can be used bo th in and ou ts ide . W h e n f o l d e d it is 1.44m ( 5 6 y 2 " ) l ong and w h e n in use its m i n i m u m he ight is 1.39m and its m a x i m u m height is 2 . 6 3 m .

T h e M T / 2 is a tal ler vers ion o f M T / 1 and of fers a m i n i m u m height of 2 . 0 7 m and a m a x i m u m height o f 4 . 7 5 m .

T h e B A L range of b o o m arms can be f i t ted to M T / 1 or M T / 2 w i t h the a d d i t i o n o f M T B and S T A 2 4 .

M T B is an adap to r su i tab le fo r use as a m o u n t i n g fo r a ho rn loudspeaker crossbar or a b o o m arm o n the M T / 1 or M T / 2 . Te rm ina tes in a 3k" W h i t w o r t h t h read .

M T P is a c i r cu la r p late w h i c h w i l l a t tach to the M T B and a l low a cab ine t b o x o r c o l u m n loudspeaker t o be suppo r ted by M T / 1 or M T / 2 .

B o t h M T / 1 and M T / 2 w i l l f i t Bose loudspeakers .

MIXER OR CU-BOX STAND (SS/3S)

• L «A MIXER OR CU-BOX CAN A useful f i xed height s tand fo r use w i t h con t r o l H BE FITTED TO THE PLATE. boxes , m ixers etc . T h e stand a l lows the engineer t o

] p lace i tems where requ i red w i t h o u t obs t ruc t i ng w o r k

I * FIXED HEIGHT OF 2'2" (68cms) and other sur faces.

* COMPLETE WITH PANEL MOUNTING PLATE

*ADJUSTABLE ANGLE HEAD PLATE

MT/1 & MT/2 TRIPOD STAND

MT/1

M T / B

Keith Monks SMALL MONITOR SPEAKER WITH BUILT IN AMPLIFIER POWERED BOOKSHELF AMPLIFIER/LOUDSPEAKER - MODEL LSI/8 and LS1/9

Th i s m o d e l is a d e v e l o p m e n t o f o u r

w e l l k n o w n E l f D e L u x e H igh

f i de l i t y L o u d s p e a k e r , w h i c h has

been f a v o u r a b l y rev iewed b y the

press all over the w o r l d . T h e secret

o f th is f i ne speaker is the very f la t

impedance curve and deep cab ine t ,

g iv ing an ou t s tand ing s o u n d fo r

such a sma l l u n i t . It is o f the

smal les t d i m e n s i o n s t o ensure an

e f fec t ive f r e q u e n c y range f o r the

6V2" long t h r o w un i t .

T h e L S 1 / 8 is designed fo r 24

hours a d a y , 7 days a week , year i n ,

year o u t ope ra t i on w i t h l i t t le or no

ma in tenance using T o r o i d a l mains

t rans fo rmers and m u meta l sh ie lded

inpu t t rans fo rmers w i t h integral

e lec t ros ta t ic screening be tween the

w ind ings to ensure c o o l r unn ing

over long per iods o f use. T h e heavy

d u t y chassis acts as a large area heat

s i nk .

Sub jec t i ve l is ten ing tests ind ica te

that th is l o u d s p e a k e r / a m p l i f i e r is su i tab le fo r b roadcas t i ng , o f f i ce or s tud io l is ten ing fac i l i t ies and it can also be used as a

p u b l i c address m o n i t o r s y s t e m .

T h e s tandard vers ion ( L S 1 / 8 ) has a jack i npu t (ba lanced l ine) , the vers ion w i t h the X L R c a n n o n inpu t is des ignated the

L S 1 / 8 ( X L R ) , whe re instead o f the capt ive ma ins c a b l e , the un i t is f i t t ed w i t h a mains X L R p lug . T h e r e is also a vers ion w i t h

ex terna l D C p o w e r e d i npu t as w e l l as A C ma ins . T h i s is the L S 1 / 9 .

LS1/8

R E A R O F LS1/9

S P E C I F I C A T I O N L S I / 8 Mains Voltage - 240 V 50 Hz or 110V 60 Hz (please specify) PowerOutput — 10 watts R.M.S. Input impedance — 10K ohms, bridging in at 600 ohms at 0 db Signal to noise ratio — Better than 65 db Frequency response —40-18 K H z Loudspeaker modules — 1 x 6V2" long throw and 2 x 3 " tweeter units Loading — Bass reflex Cabinet — Teak veneer (walnut to special order) recessed back connector Vo lume control — Recessed volume control with on/of f switch Mains indicator — Recessed red indicator alongside volume control Size - (metric) 225 x 375 x 248 m m ; (inches) 8.9 x 14.8 x 9.8 ins. Weight - 15.4 lbs 7.0 kgs (packed); 13.8 lbs 6.3 kgs (unpacked) Packing — In high grade cardboard, polystyrene lined Delivery — T o special order

THE COLOURED STANDS AN EXCITING ADDITION TO THE RANGE OF

MICROPHONE STANDS AND BOOMS BY KEITH MONKS (AUDIO) LTD.

U.K. DISTRIBUTORS AMDIO LTD., 26 -28 R E A D I N G R O A D S O U T H , F L E E T , A L D E R S H O T , H A N T S . T e l e p h o n e : F L E E T (02514) 2 0 5 6 7

U.S.A. DISTRIBUTORS KEITH MONKS (U.S.A.) INC., 1 1 6 9 T O W E R R O A D , S C H A U M B U R G , I L L , 6 0 1 9 5 , U . S . A . T e l e p h o n e : (312) 8 8 5 0 0 6 6

K E I T H m O R K S (QUDIO) L T D 26 -28 R E A D I N G R O A D S O U T H , F L E E T , A L D E R S H O T , H A N T S . U . K . G U 1 3 9 Q L

T e l e p h o n e F L E E T (02514 ) 2 0 5 6 8 / 9 (Con t i nen ta l d ia l i ng (2514) 2 0 5 6 8 / 9 )

Te lex 8 5 8 6 0 6 (ans.) 8 5 8 6 0 6 K M A L G .