Shure 507B User Guide

222 HARTREY AVE.. EVANSTON. IL. 60204 U.S.A.

MICROPHONES AND ELECTRONIC COMPONENTS

AREA CODE 3121866-2200 CABLE: SHUREMlCRO TWX: 910-231-0048 TELEX: 72-4381

DATA

SHEET

MODEL

507B

DYNAMIC HAND-HELD PAGING MICROPHONE

APPLICATION

The Model 507B microphone is highly recommended for all types of mobile communications; for hams; industrial and commercial paging; outdoor public address systems; and all applications where a rugged hand microphone is required. The Model 507B is a low impedance microphone and is recommended where long cable lengths are required.

l NSTALLATION

A mounting bracket for permanent installation is supplied with each microphone. The bracket has

mounting holes with clearance for No. screws. (see Figure

1).

or No.

GENERAL

The 5078 microphone is a high quality, extremely

reliable dynamic hand-held microphone with an extended low- and high-frequency response that particularly suits it for ham use, mobile FM transmission, and top-quality paging systems. The microphone has a

highly intelligible, clear, crisp, natural voice response.

It features professional design, small size, light weight, and modular construction, providing extreme dependability and exceptional ease of field service.

The modular construction of the 507B accounts for

its tremendous ease of field serviceability. The cartridge, switch, and cable are of modular design which make them replaceable in a matter of minutes if replacement is ever necessary. The microphone wiring is channeled so that crimping or breaking of wires is no longer a concern.

The unit fits naturally and comfortably in the hand and is not affected by heat or humidity. Exclusive ARMO-DUR@ case is light gray and charcoal, is immune to oil, grease, fumes, salt spray, sun, rust and corrosion-and is outstanding in its ability to withstand mechanical shocks and vibration. "Million-Cycle" type switch is double-pole, single-throw, designed to withstand severe operating conditions and constant usage. The TRIPLE-FLEX@ cable provides the flex life of any previously available coiled another Shure first.

Microphone Features:

Extended low- and high-frequency response Highly intelligible voice response Unparalleled ruggedness and reliability Moving coil (dynamic) element

ARMO-DUR@ case "Million-Cycle" leaf-type switch controlling microphone and external relay or switching circuits Modular construction Exceptional ease of field service "Life-time" hang-up button and mounting bracket

TRIPLE-FLEX@ cable provides exceptionally long life

leaf-

to 4 times

cords-

The internal switch connections of Model 507B are shown in Figure coiled cord cable (two conductors shielded) and a double-pole, single-throw, leaf-type switch to control

the microphone circuit and an external relay or switching circuit. The WHITE and GREEN leads are the "hot" conductors for balanced-line connection to

the microphone circuit; the shield is connected to the microphone circuit ground. The RED and BLACK leads

control the relay or switching circuit. The microphone circuit of the switch is normally open but may be easily modified for normally shorted operation.

The Model 507B is wired for balanced-line operation

and is recommended for use where long cable lengths are required, or conditions where severe hum pickup may exist. The 507B microphone may be fed directly into a standard low-impedance amplifier, or a Shure A95 Series Line Matching Transformer may be used for

CONNECTIONS

The 507B has a four-conductor

MOUNTING HOLES, CLEARANCE FOR

No.

SCREWS

MOUNTING

BUTTON

BRACKET

FIGURE

MOVEMENT--r

YELLOW

INTERNAL

FIGURE 2

CONNECTIONS

27A1170

1981,

(UK)

Shure

Brothers

Inc.

(OVER)

Printed

U.S.A.

coupling the Model 507B to the input of a high impedance amplifier. A two-conductor shielded cable may be used for extending only the microphone circuit. If both the microphone circuit and the remote circuit are to be extended, a four-conductor cable should be used having two shielded conductors for the microphone circuit.

The microphone circuit of the Model 507B is normally open when the microphone switch button is in the normal position. The microphone switch may be rewired to have a normally shorted microphone circuit. To modify the Model 507B for a normally shorted microphone circuit, proceed as follows:

Remove the three No. 6 Phillips self-threading screws from the back of the microphone case.

2. Separate the case front and back, and remove the microphone switch button.

3. Unsolder or clip the WHITE cable lead from upper (from bottom of microphone) switch solder lug (see Figure 2).

4. Solder the WHITE cable lead to the lower switch solder lug (containing the YELLOW lead to the microphone cartridge).

5. Place the microphone switch button in the normal position on the case front. Place the case back on the case front and firmly press the two sections together. Fasten the case back to the case front with the screws previously removed.

Impedance

Microphone rating impedance is 150 ohms (200 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms

Switch

Double-pole, single-throw, leaf-type

Cable

Attached, recoils to 0.3m (1 ft), extends to 1.8m (6 ft)

Case

Two-tone gray and charcoal ARMO-DUR@

Dimensions

See Figure

(I-49/64

INJ

-I

44.mM

OPERATION

The Model 5078 will operate very satisfactorily under all ordinary conditions of humidity, heat, and cold. Dropping the microphone or other severe mechanical shocks should be avoided.

SPECIFICATIONS

TY pe

Dynamic

Frequency Response

100 to 5,000 Hz (see Figure 3)

+I0

-I0

I I I I l I lllll

100 lpO0 lO.000

TYPICAL

FREQUENCY

FIGURE

Output Level

Open Circuit Voltage*

Power Level**

*O dB = 1 volt per 100 microbars

**0 dB

(at 1,000 Hz)

.......................

1 milliwatt per 10 microbars

.................

HERTZ

RESPONSE

I l llllll I

Pop00

-39.0 dB (11.2

mV)

58.0 dB

OVERALL DIMENSIONS

FIGURE

Net Weight

312 grams (11 oz)

Packaged Weight

510 grams (18 oz)

FURNISHED ACCESSORY

Mounting Bracket

.........................

RK6MB

REPLACEMENT PARTS

Cartridge Switch Cable

...................................

..................................

...................................

90A3507

70A4110

R50

GUARANTEE

This Shure product is guaranteed in normal use to be free from electrical and mechanical defects for a period of one year from date of purchase. Please retain proof of purchase date. This guarantee includes all parts and labor. This guarantee is in lieu of any and all other guarantees or warranties, express or implied, and there shall be no recovery for any consequential or incidental damages.

SHIPPING INSTRUCTIONS

Carefully repack the unit and return it prepaid to:

Shure Brothers Incorporated Attention: Service Department 1501 West Shure Drive Arlington Heights, Illinois 60004

If outside the United States, return the unit to your dealer or Authorized Shure Service Center for repair. The unit will be returned to you prepaid.