Shure SR10 Service Manual download pdf

222

HARTREY

AVE..

EVANSTON,

IL.

60204 u.S.A.

MODEL SR106

AND SR106-2E

AREA CODE 312/866-2200

CABLE: SHUREMICRO

TWX: 910- 231-0048 TELEX 72-4381

DATA

SHEET ELECTRONIC CROSSOVERS

OPERATION AND

The Shure Model SR106 Electronic Crossover is a

selectable-frequency dividing network, designed for

use with two- or three-way speaker systems such as

the Shure

SR108 Extended Range Speaker System in

high-quality sound systems. It utilizes the principle

of biamplification to separate an audio console or

mixer-preamplifier output into two frequency bands for

distribution to separate power amplifiers. In this man-

ner, the advantages of low distortion, increased

high-

frequency power, wide dynamic range, and maximum

efficiency are obtained.

DESCRIPTION

The SR106 provides crossover frequencies of 500

Hz, 800 Hz and 2600 Hz. It can be used to provide two

output frequency bands or, in conjunction with a

second

SR106, to provide three output frequency

bands, with each output routed to a separate power

amplifier (triamplification). The

SR106 contains both

professional three-pin and phone jack input and out-

put connectors, and can be operated in line level bal-

anced and unbalanced systems.

The

SR106 is designed for maximum simplicity of

operation and maintenance. A frequency-selector

switch and a power on-off switch are the only con-

trols. Silicon transistors and other solid-state devices

are

used throughout. All components are of the high-

est quality and are operated well within their re-

spective ratings to assure maximum reliability under

normal use conditions.

The

SR106 and SR106-2E are identical except that

the

SR106 operates from 108-132 Vac, and the

SR106-2E operates from either 105-125 or 210-250 Vac

(switch-selectable).

All

SR106 Series units are supplied with four rack-

mounting screws for mounting in 483 mm (standard 19

in.) audio equipment racks or in optional Shure

A30A

or A105A Carrying Cases. In addition, the SR106 is

supplied with a protective power switch cover and the

SR106-2E is supplied with an ac line cord (without

power plug). The

SR106 (only) is listed by Under-

writers' Laboratories, Inc., and is listed by Canadian

Standards Association as certified.

SPECIFICATIONS

Type

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

All silicon transistor electronic

crossover network

Crossover

Frequency

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

500 Hz, 800 Hz or 2600 Hz

(selectable)

SERVICE MANUAL

Voltage Gain

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

1 dB (low or high frequency

output) with 47-kilohm output

termination

1.5

1 dB with 600-ohm

output termination

Input Sensitivity

........

1-volt input produces I-volt

output (unity gain) with

47-kilohm output termination

I-volt input produces 0.84-volt

output with 600-ohm output

termination

Frequency

Response

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

Electrical sum of outputs (phase

reversed): flat

2 dB,

20-20,000 HZ

High-frequency output: 12 dB/

octave

rolloff below crossover

Low-frequency output: 6 dB/

octave

rolloff above crossover

(see Figure E)

Phase

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

..Input and low frequency output

connectors in phase, high

frequency output reversed

phase

lnput Common

Mode Rejection

......

92 dB minimum at 100 Hz

Input Impedance

........

47 kilohms

Total Harmonic

Distortion

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

max. (I-volt input; low

frequency: 20-2,600 Hz; high

frequency: 500-20,000 Hz)

Hum and Noise

..........

96 dBV max. low or high

frequency output (through

20,000 Hz noise-bandwidth

filter with 20 Hz lower cut-off;

600-ohm source, 47-kilohm

output terminations)

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

Noise

...

98 dBV max. low or high

frequency output (through

20,000 Hz noise-bandwidth

filter with 300 Hz lower cut-off;

600-ohm source, 47-kilohm

output terminations)

Clipping Level

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

18 dBm (6.2V) min. input from

30-20,000 Hz with 600-ohm or

greater output loads.

Recommended Output

Load Impedance

....

600 ohms minimum

(115 ohms actual output im-

pedance)

Power Supply

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

SR106: 120 volts

lo%, 50/60

Hz ac only. SR106-2E: 105-125

or 210-250 volts,

50/60 Hz ac

only. Power consumption:

3 watts maximum.

1979,

Shure

Brothers

Inc.

27A1145

(SF)

Printed

U.5.A

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 -

222 HARTREY AVE.. EVANSTON, IL. 60204 u.S.A. MODEL SR106 AND SR106-2E AREA CODE 312/866-2200 . CABLE: SHUREMICRO TWX: 910- 231-0048 TELEX 72-4381

Page 2 - WARNING

REPLACEMENT PARTS LIST-Continued CIRCUIT BOARD ASSEMBLY (Al) Reference Designation Capacitor, Electrolytic, 4.7 ,F, 35v Capacitor, Electrolyti

Page 3 - 'NOT

NOTES TO CIRCUIT DIAGRAM General 2. Line voltage: 120V, 50/60 Hz (SR106), or 115V Shure part numbers are not shown in the Parts List or 2

Page 4 - CROSSOVER FREQUENCY: 500

SR106-2E POWER SUPPLY

Page 5

FIGURE A. SR106 FRONT PANEL Temperature Range: ... Operating - 7" to 57°C (20" to 135°F) Storage ... _ - 29"

Page 6

6. Move CROSSOVER FREQUENCY Switch (7) to select proper crossover frequency (see Speaker Operating Instructions). 7. (SR106-2E only) Move V

Page 7 - OUTPUT INPUT

+ 10 - m P 0 w 0 B -10 W W : -20 w -30 20 50 100 200 400 600 1K 2K 4K 6K IOK 2OK FREQUENCY (HZ ) CROSSOVER FREQUENCY: 2600 Hz CROSSOVER FREQ

Page 8 - Production variations

The outputs of the power amplifiers in a biamplifica- tion system may be connected to any high-power, two-way speaker system with separate

Page 9 - &5%

The second test should be made feeding two speaker systems at a time with the same vocal or instrumental program material or noise (p

Page 10

Adding Level Controls If the power amplifiers in use do not have volume controls, or if volume controls are desired at the SR106 lo

Page 11 - 210-250~

CAUTION Similar wire colors are used in different cir- cuits; make sure proper re-connections can be made. Take care not to bend or break the

Page 12 - SR106-2E POWER SUPPLY

REPLACEMENT PARTS LIST (See Figures L and P) I I I *Parts listed as RKC Kits should be ordered by that number. Any orders received for p

Shure SR10 Service Manual

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Shure SR10 Service Manual

Browse online or download Service Manual for Audio amplifiers Shure SR10. Shure SR10 Service manual User Manual

Summary of Contents

More documents for Audio amplifiers Shure SR10

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