MULTI-IMPEDANCE DYNAMIC MICROPHONES 1

NEW "SMALL UNIDYNES"

The "Small Unidynes" are the only small sized uni-directional mov-

ing coil dynamic microphones. They are completely new micro-

phones with improved performance, yet retaining all of the highly

desirable features of the world famous original "Unidynes." The

internal unit, based on the Shure-patented "Uniphase" principle,

has been designed for high overall efficiency and extended peak-

free frequency response. Rugged coil construction also provides

greater immunity of the moving coil system to abnormal atmo-

spheric conditions and mechanical shock.

Model "555" and Model "556s" are considerably smaller than the

original Model "55" and Model "556" and are ideal for installa- "5565" tions where it i s desirable to keep the microphone size to a mini- ~ F ~ ~ ~ n ~ ~ a , ' ~ u 5 ~ ~ s e ~ (For Broadcast)

mum and still retain operating efficiency.

The "Small Unidynes" are "Perfect Performersu-ideal for high quality public address, theatre-

stage sound systems, recording and remote broadcasting. Because of the unusual ruggedness

and reliability, Model "555" is also recommended for fixed station use in the Police, Fire and Trans-

portation services. For studio broadcasting and television use and similar applications where the

utmost in qualty is desired, Model "5565" i s recommended. "Small Unidynes" reduce reflection

and reverberation, decrease random noise energy pickup by approximately 67'/L, allow per-

former to stand at a distance from the microphone 75:: greater than i s possible with non-direc-

tional (omnidirectional) microphones, have smooth response from 40-15,000 c.p.s at front-dead

at rear. Standard %"--27 thread. Both are supplied with a 20 foot, high-quality cable and plug

assembly. Model "556s" features a Cannon connector, and it also has a special newly designed

shock isolation unit of live rubber construction.

Dimensions for both units: case 3x6" high; 2%" wide, 3x6" deep.

S h i p p i n g w e i g h t : " 5 5 5 " 3% pounds; "5565" 4% pounds.

Multi-Impedance Switch,on Models "555", "5565" 51"

RUDOV $loo.oo

20 ft. RUDOT $ 72.50

IMPEDANCE TABLE L-35-50 ohms

M-150-250 ohms

H-High

"SONODYNE" HIGH-OUTPUT DYNAMIC

OUTPUT LEVEL 59.4 d b below I Milliwatt oer 10 microbar signal

--

60.1 d b below I Milliwatt per 10 microbar signal 60.5 d b below I volt per microbar

A rugged pressure-type dynamic microphone with wide range frequency re-

sponse and semi-directional pickup characteristics. Features a multi-impedance

switch for low, medium or high impedance. Operates on the principle of a

moving coil element in a magnetic field. Has built-in receptacle and a two-con-

ductor shielded cable with microphone plug

attached.

The rich satin chrome case i s functionally de-

signed for improved acoustical performance

and modern appearance. Frequency response

60-10,000 c.p.s. The "Sonodyne" is ideal for

all general-purpose use including public ad- MODEL "51" dress, wire and tape recording, communica-

tions and similar applications. Code: RUSON. Microbar=one dyne per rq. cm.

IMPEDANCE TABLE

L-35-50 ohms

M-'50-250 ohms

H-High Impedance

OUTPUT LEVEL

53.0 d b below I Milliwatt for 10 Microbar signal

52.5 d b below I M i l l i w T for 10 Microbar signal - 52.0 db below I volt-

per Microbar

MODEL ;;s%~ LIST

5 I 1 5 f+. 1 3y2 lbs. 1 $45.00

"MONOPLEX?' SUPER-CARDIOID CRYSTAL A high-output, undirect ional microphone t ha t Shure Broadcast microphones. New moisture-

ranks fa r above ordinary crystal microphones. proofed "Me ta l Seal" crystal f o r long opera t ing The S u ~ e r - C a r d i o i d " M o n o ~ l e x " is T W I C E AS life. Case pivots a t rear, can b e po in ted t owa rd UNIDIRECTlONAL AS THE It has desired sound o r upwards f o r hor izontal p lane a 14 t o I f ron t t o rear pickup ra t i o and RE-

DUCES OF RANDOM SOUND BY pickup. The "Monoplex" is excellent f o r high-

73%! The ~ M o n o p l e x ~ employes the same type qua l i ty pub l ic address, communications, record-

of phase-shif+ing network used in the i n g and similar applications. Opera tes under

adverse condit ions o f background noise and re-

MODEL CABLE / OUTPUT IMPED. p\\yE -- $39.75

microbar

verberat ion where a convent ional microphone

would b e pract ical ly useless. Built-in cab le con- nector. Standard j"'"-27 thread. He ight 4".

W i d t h 3&". Thickness 1%". Shipping we ight

2y4 Ibs. Rich satin chrome finish.

MODEL 737A Microbar=one dyne per sq. cm. Code: RUMON

Good-aua l i tv ~ e r f o r m - Its exfremelv low rice makes An eraens ive- look inn . . . . . . . . . . . - . . . . . ance a i low .cost. Has this striking,hand-'held micro- microphone at moderat;

707A good response character- phone a natural for hams STRATO- cost. Wide- range re- CRYSTAL istics, is free from peaks, THE low-cost public address sys: L[NER sponse (free from unde-

has t yp i ca l semi-direc- "REX" terns, and as a replacement sirable ~eaks) for aood tional pickup. Uses mois- ture-proof Bimorph Crys- tal. Idea l fo r low-cost P. A. systems, call sys- tems, amateur phone transmitters and similar applications.

Pearl Gray case with rich satin chrome finish on front grille. The case is a heavy die casting. Standard K"-27 thread. Diameter 2%". Shipping weight 21/4 pounds. High impedance. 710 SERIES

for home recording rnicro- phones. A rugged unit de- signed for high :peech intel- l igibil ity. The Rex" saves further costs, as it needs no desk stand! Has a broad base, sits firmly on a table top without tipping over. Frequency response 60 to 9000 c.p.s. 5' shizlded cable. Beautiful Burgundy-red me- tallic finish. Die-cast case complete with stand adapter. 22," wide. 3%" high. 1%" thick. High impedance.

reproduct ion. of e i i he r volce or muslc. Placed horizontally, the 708A is semi-directional; used ver- tically i t becomes non- directional. Bimorph Crys- tal. A swivel permits 90" ti lt ing of the microphone. Case dimensions: diame- ter 2%" length 4-7/16". standard thread %"-27. Shipping weight 2% Ibs. Frequency response is 60- 8000 c.p.s. Pearl Gray finish. High impedance. . . - - - . -. - -

MODEL 707A Code: 707A-RUDOF Code: 7IOA-RUDEL MODEL 70BA Code: 708A-RUDUM 710s-RUDET

LAPEL MICROPHONE MODEL "100" SERIES CARBON MICROPHONE

MODEL 768

CABLE

7 ft.

OUTPUT

51.0 d b below I volt per microbar

p\\yE

$27.50

Designed for Public Address, lecturing, port- able transmitters and all general uses for ~ntel l ig ible reprdduction of speech. Pres- sure-actuated diaphragm-type crystal micro- phone. Graphoil Bimorph crystal, moisture- sealed. Microphone is inconspicuous, weighs only 1% ounces. Response from 40 to 6,000 c.p.s. High frequency response accentuated for maximum intelligibility. 1%'' diameter. Gray finish. Lapel clip. 20-foot shielded single-conductor cable. Shipping weight I pound. Output level: 57 db below I volt oer bar. Code RULOP. List Price $27.00.

$15.50

Microbar = one dyne per sq. cm. Microbar = I dyne per sq. cm. Microbar = one dyne per sq. cm.

MODEL 1 Oi;;yT Is;\!.

A high-quality carbon microphone specially designed for 'mobile equipment. Rugged dependable unit with clear, crisp voice re: sponse and high output. Fits snugly into palm of hand. Heavy duty switch for push- to-talk performance. Furnished with hook !or suspension and bracket for wall mount- Ing, plus coiled-cord cable. Adopted as standard microphone by leading manufac- turers of police transmitters. Output level: 5 d b below I volt for 100 microbar speech signal. Net weight 14 oz. Shipping weight 1% pound. Case dimensions: 3%" high, 1%" deep, 2%" wide. 70 to 80 ohms impedance.

p\\zEl $10.95

$12.95

7 10A-5'

7 10s-5' (with switch)

SWITCH 1 'ODEL I ARRANGEMENT 1 CABLE I CODE / Pi\% I

MODEL O x T CABLE

51.0 d b below

microbar

I-- 7 0 8 - ~ one volt per 7 ft.

50 db below 1 volt Per microbar

50 db below l volt per microbar

Mlcrobar = one dyne per sq. cm.

-- 1 1/4 1 b.

1 y. Ib.

1°IC

MODEL C15C Coiled Cord with trimmed and tinned leads. Used i n "CB" a n d "100" Series Microphones.

MODEL: C15C Code: RUCOR List Price. $6.75

Two Wire Relay Switch normally open

(No microphone witch). Relay normally open.

Microphone switch normally open.

Coiled Cord I I " retracted 5' extended -- Coiled Cord I I" retracted 5' extended

RUCEG

RUCEM

$27.50

$27.50

THE "HERCULES"

510 SERIES

The "Hercules" is a hand-held magnetic unit. Provides the ruggedness, clear reproduction and high output long needed for Public Address, Communications, and Recording-AT AN AMAZINGLY L O W PRICE! Recommended for Announcing and Mobi le Public Address Systems; Communications: Home Recording; high quality Inter-Communication. Ideal for general-. purpose use i n tropical countries and al l coastal areas where humidity is a problem. The output voltage is induced in a coil o f wire by causing a sound wave t o modulate the reluctance of the magnetic circuit. By the control of this reluctance the utmost i n quality ~ , n d stabil i ty is achieved. H igh impedance is obtained without the use o f a transformer. The

Hercules" can be used either Indoors or Outdoors. Fits snugly in the hand sits f irmly on a desk. Frequency response is 100 t o 7,000 C.P.S. Furnished with 5' shielde'd cable. Green metall ic finish. Die-cast case. Complete with stand adapter. 223" wide, 3%" high. 11/2" thick.

THE THE "DISPATCHER"

MODEL -- 510C

510s ( w i t h

sw i tch )

"GREEN BULLET" The "Green Bullet" is a magnetic unit, espe- cial ly designed t o provide quality music and speech reproduction a t moderate cost. I t is practically immune t o the effects of high t e m p e r a t u r e s a n d humid i t y . The " G r e e n Bullet" has a stabil i ty assured by unique control o f the reluctance of the magnetic system. It features: high output, good re- sponse, high impedance without the need of a transformer. The "Green Bullet" has a beautiful modern metall ic green finish with a plated grille. Frequency response is 100 t o 7,000 c.p.s. Furnished with 7' single-con-

Microbar = one dyne per sq. cm.

CABLE

5 ft.

ductor shielded cable. MODEL 520

MODEL I CABLE 1 O&;yT 1 IMPEDANCE 1 1 CODE 1 pilfzE -- --- 52.5 db b e l o w I 1 I I

520 1 7 ft. I v o l t p e r HlGH I K Ibs. RUDAL $17.50 m i c r o b a r

O$$yT

52.5 d b b e l o w I v o l t

p e r m i c r o b a r

52.5 d b

Microbar = I dyne per sq. cm.

THE "RANGER"

ft. I b e l o w I v o l t p e r m i c r o b a r

The new Shure "Ranger" is a new development o f a similar magnetic unit originally housed i n micro- phones used by the Armed Forces. The "Ranger" is especially recommended for those applications where long lines are used, and a rugged hand- held microphone is needed. It is ideal for outdoor public address (sports arenas, athletic fields), mo- b i le communications, hams, audience participation shows, etc. The "Ranger" is designed for high speech intell igibi l i ty. Easy t o use, fits snugly i n the palm o f the hand. Has heavy-duty single-throw, double-pole leaf-type switch for push-to-talk oper- ation. Phosphor-bronze blades and silver contacts for maximum operating life. Furnished with 5' three-conductor shielded cable. Frequency response

IMPEDANCE

H i g h

-

MODEL 520SL

H i g h

This new Controlled Reluc- tance unit is designed t o handle the most severe f ie ld requirements of paging and dispatching systems. The unit is supplied with 3-conductor s h i e l d e d c a b l e , a n d i s w i r e d t o o p e r a t e b o t h microphone and relay cir- cuits. The "Dispatcher" is deal for police, taxi-cab. ra~ l road , airport, bus, truck, and al l emergency com- mun ica t ions work where dependability is vital. Large gr ip-bar assures p o s i t i v e c o n t a c t . F i r m d o w n w a r d pressure on grip-bar locks switch. NOTE: THE UNIT C A N BE PICKED UP WITH- O U T A C T U A T I N G T H E MICROPHONE.

Sz\G' IY2 Ib.

Microbar = I dyne per sq. cm.

TAPE RECORDING HEAD

1 % Ib.

The Shure Tape Recording Head is a high quality, pre- cision-engineered unit incor- porating recording, repro- ducing, and erasing i n one head. Suitable for a l l types of tape recording: profes- sional, semi-professional, ex- perimental, technical and amateur use. Records bn half width o f tape-for double- track recording. TAPE MODEL 815

Model: 815 Code: RUWAT List Price: $15.00

CODE

RUTUF

is 100 t o 9,000 C.P.S. 505 SERIES WIRE RECORDING HEAD

p\lSzE $15.00

RUTUS $17.00

The Shure magnetic Wi re Recording Head is a high quality recording unit w i th recording, p lay -back , and signal erasure in one small unit. Has standard 4-prong adapter base. The Model "812" is a direct replacement

MbDEL 812 unit for the improved Sears- Roebuck Wi re Recorder.

Model: 812 Code: RUWlR List Price: $15.00 I I I p e r m i c r o b a r / - 1 . . 1 Mlcrobar = I dyne per sq. cm.

1

1 Y4 lb.

MODEL 1 CABLE / '$;\IT 1 IMPEDANCE CODE / PiIzE --- RUDAY '50-250

ohms

50.5 db b e l o w l v o l t

$27.50

--

H i g h

5058

1 % Ib.

47.0 d b below 1 I mil l iwatt 5 ft- per 10 micro-

bar signal

RUDAX $27.50

SWITCHFC 4ND ACCESSORIES MICROPHONE

REPLACEMENT CARTRIDGES

CONTROLLED RELUCTANCE The Model R5 Controlled Reluc- tance Microphone Cartridge is available for service installa- t ion and is also ideal for the replacement of crystal micro- phone cartridges i n Shure cases o f the Model 707A and Model 100 Series designs. It wil l also replace cartridges in cases of other manufacturers' models of similar design, where space permits. Complete installation

MODEL R5 ins t ruc t ions i n Engl ish a n d Spanish are included. I t is an

acoustically controlled balanced-armature transducer ideal for both microphone and soft-speaker applications. Prac- t ically unaffected by heat and humidity. Supplied with rubber mounting ring. Overall diameter o f mounting r ing 21/4"; thickness of rubber r ing 3/16". Overall depth of cartridge 5''. Shipping weight 4 ounces.

Code: RUTUC. List Price: $10.00

"GRIP-TO-TALK SLIDE-TO-LOCK" SWITCH This rugged Heavy-Duty Switch employs a long life, leaf-type switch element that withstands the most severe f ield require- ments of paging and dispatching systems. Has spring-temper phospor-bronze switch blades with pure silver contacts. ldeal for Police, Taxi-Cab, Railroad Airport Bus, Truck, and al l emergency 'communi;ations work. Large gr ip-bar assures positive con- tact. Firm downward pressure on gr ip-bar locks switch. Can be used with Shure con- nector-type crystal dynamic and carbon microphones o f any'impedance. Fits handily on Shure S36A Desk Stand as shown in illus- tration. N o soldering necessary, simply p lug in. Switch element can be read- ~ l y removed for rewiring t o accommodate other switching combinations. Rich satin chrome finish. Shipping weight I pound. MODEL AB8A

Model: A 8 8 A C o d e : R U N E L L is t Price: $ 1 1.75

ON-OFF PRESS-TO-TALK SWITCHES

CRYSTAL The Model R7 Crystal Micro- phone Cartridge is available for service installation as a replace- ment for the cartridges i n the Shure Crystal Microphones of the 707A and 708A series. H igh o u t p u t 4 l d b below I volt per microbar. C a r t r i d g e supplied with rubber mounting rings and a complete set o f mounting instructions.

MODEL R7 Model: R7 Code: RUDEC List Price $7.75 Plug into the microphone quickly and conveniently. Durable, dependable. N o soldering necessary.

CARBON Model A83B. Rotary-type "On-Off" switch. Quickly attached t o any cable-con- nector type Shure microphone. Internal p lug establishes connections. Bakelite arrow knob.

Model RIO Carbon Cartridge used in "CB", "loo", and "120" Model A83B. C o d e : R U N I M L is t Price: $6.50 Series C a r b o n Microphones. 5 5 A 1 5 Swi tch e lement only. L i s t Price: $1.50 Rubber mounting rings. Easy t o install. Model A84B. Momentary "On-Off" switch. Press-to-talk Bakelite disc.

Model: RIO Code: RUTUB Model A84B. C o d e : RUNID List Price: $7.50 5 5 A 1 6 Swi tch e lement only. L i s t Price: $1.75

List Price $8.00

Model A85C. Momentary Relay-Type switch. Press-to-talk Bakelite disc. Normally-open switch closes circuit comprising one conductor and shield o f

CABLE TYPE TRANSFORMER outsoins cable for operation of relay or other device; remaining conductor and shield o f cable carry microphone output. Must be used with two-conductor

Model A86A is a high- shielded cable. Standard Shure cable-connector receptacle. Satin chrome finish. quality c a b l e - t y p e trans- m&T* former which offers addi- Model A85C. C o d e : R U N A T L is t Price: $10.75 - tional versatility when used i n conjunction with Shure 5 5 A 1 9 Swi tch e l e m e n t only. L i s t Price: $2.00

Models 55. 55s. 556, 5565, a n d 51 Dynamic M i c r o -

phones, which employ the impedance matching switch. I t solves the frequent problem of installations requiring long lengths of microphone cables without the loss o f high-

MODERN DESK STAND frequency response. Model A86A matches 35 t o 50 and 150 t o 250 ohm microphones t o high impedance amplif ier in- put. Compact, sturdy. Case diameter I%", length 2%". Model S36A. Streamlined Desk 2-foot cable. Shipping weight. 1'14 pounds. Mount with stable support. Fits

Model: A86A Code: RUDEB List Price: $16.00 Shure connector-type Micro- phones, concealing p lug i n base. ldeal for use with A88A

TAKE-APART STAND rip-to-~a~k Switch. Adapter

Model 5348. Handy low-cost stand for desk or hand use. provided for other type micro-

One twist of handle locks i t securely in base for use as phones. Removable button for a table stand or releases handle for use in hand. Metal installation o f %" standard base wood handle. Metal t o p threaded 5h"-27. Height over i l l 6-11/16". Base diam. 4b". Length of handle 5%". bushing switch o r volume con-

Shipping weight I pound. trol. Pearl Gray finish. Base: 2%" high, 5" wide, 7" long.

Code: RUKAB List Price: $3.00 Shipping weight 1% pounds.

Model A41B. Microphone handle only. Threaded 5h"-27. MODEL S36A

Code: RUJAD List Price: $1.25 MODEL 5 3 4 8 M o d e l : S 3 6 A C o d e : RUSEF L is t Price: $5.50