Shure SR110, SRI 10-2E User Guide

222

HARTREY

MICROPHONES

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EVANSTON. IL.

AND

ELECTRONIC

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910-231-0048 TELEX: 72-4381

60204 U.S.A.

COMPONENTS

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MODEL SR110 A)

.--

SRI 10-2E

PROFESSIONAL

MONITOR MIXERS

OPERATION AND

DESCRIPTION

The Shure Model SR110 Professional Monitor Mixer

is a rack-mounted, eight-channel, line level mixer, designed as an accessory for the Shure Model Series 2 Audio Console or SR109 Professional Mixer.

It can also be used with similar equipment when a separate stage monitor mixer is desired to be added to a sound reinforcement system. The

be used in multi-track recording applications as a re-

cording mix panel or in stereo broadcasting.

Interconnections between the or SR109 are made through a single multi-pin connector and cable permanently attached to the SRllO.

SR110 also contains a matching female multi-pin

The

connector for "stacking" additional

The SR110 provides eight high-impedance, unbalanced, line level inputs to its mixing circuitry, and one high-impedance, unbalanced line level input to its output selector switch for monitoring program material. The output of the line level with one three-pin male professional audio connector and two standard

phone jacks, connected in parallel.

The front panel of the SRllO contains eight rotary volume controls for channel gain, and a combination

rotary master volume controllpower-off switch. An

output selector slide switch, headphones jack and

neon power indicator lamp are provided. Silicon transistors and other solid-state devices are used throughout. All components are of the highest quality, and are operated well within their respective ratings to assure maximum reliability under normal use con-

ditions.

SR110 and SR110-2E are identical except that

The

the SRllO operates from 108-132 Vac, 50160 Hz, and

SRllO-2E operates from either 105-125 or 210-250

the

Vac, 50160 Hz (switch-selectable).

SR110 Mixers are supplied with four rack-mounting screws for mounting in standard 19 in. (483 mm) audio equipment racks or in an optional Shure ing Case (mounted with an

SR110-2E is supplied with a detachable ac line cord (without power plug). The Underwriters' Laboratories, Inc., and is listed by

Canadian Standards Association as certified.

SR110 is a 600-ohm balanced

SR109). In addition, the

SRl10 (only) is listed by

SR110 can also

SR110 and the SRlO1

SRllOs.

'/4

inch three-circuit

SRlO1

A105A Carry-

SPECIFICATIONS

Type

. . . . . . . . .

(56)

. .

.All silicon transistor monitor

mixer

SERVICE MANUAL

Number of lnput

Channels Power Output Voltage Gain*

Mixed

Inputs**

Program

Input**

Frequency

Response

lnput Sensitivity

Distortion

Noise

(300 HZ-20

Mixed

Inputs**

Program

Input**

Hum and Noise

(20 Hz-20 kHz)

Mixed

Inputs**

Program

Input**

lnput Clipping

Level at

lnput Impedance

at 1 kHz:

Mixed

Inputs**

Program

Input**

*Measurement conditions: Inputs through

terminated in

and channel Volume full up.

**OUTPUT SELECTOR

+MIX

BUS

. . . . . . .

. . . . .

. . .

. . . . . .

. . .

. .

. . . . .

kHz)

. . .

. . . . . . .

. . .

1 kHz

. . . . . .

. . . .

600

terminated

.8 mixed inputs; 1 program input

. . .

.38 i2.5 dB (LINE LEVEL Output)

.40 +-2 dB (LINE LEVEL Output)

.21

. .

.THD less than 1 % at + 12 dBm,

. . . . .

. .

. . . .

. . .

.2.5V min. on mixed inputs 1-8

. . .

ohms,

PHONES

Switch position.

5.6k.

+19.2 dBm (LINE LEVEL Output)

t2.5 dB (PHONES Output)

14.5

-8

+-2

dB (MIX BUS)t

i3 dB, 20 Hz-20 kHz (LINE

LEVEL Output)

mV max. for +4 dBm line

level output

30 Hz-20 kHz; IM distortion less than 1 % at +12 dBm

68 dBV max. (MASTER Volume Control down)

-54 dBV max. (MASTER and channel Volume Controls up)

-58 dBV max. (MASTER Volume Control up)

64 dBV max. (MASTER Volume Control down)

-50 dBV max. (MASTER and channel Volume Controls up)

-54 dBV max.

Volume Control up)

with channel Volume Controls set at max. (input clipping level increases with decreased setting of channel Volume

Control)

kilohms

.23.5

kilohms

.30

output terminated in 8 ohms,

(MASTER

150

ohms, LINE LEVEL output

Printed in

MASTER

U.S.A.

FIGURE A. SR110 FRONT PANEL

Output Impedances: 3. MASTER Volume Rotary Control/POWER OFF

. . . .

Line Level Headphone

. . .

. . . .

. .

. . .

. . . . .

. . . . . .

Mix Bus

Phasing

Controls

Operating Voltage

Power

Consumption

Temperature:

Operating Storage

Dimensions

Weight Finish

Installation

Certifications . . . . . . .Listed by Underwriters' Labora-

OPERATING

Functional Description

1. Individual Channel Volume Rotary Controls (Eight) 1. Using hardware provided, install

-Control volume of each channel separately.

Power-On Indicator Lamp-Indicates ac power is Carrying Case (with SR109) prior to making being applied to unit. electrical connections.

..Balanced 120 ohms actual (for Switch-Adjusts level of total monitor output and

use with 600-ohm lines)

. . . .

.12 ohms actual (for use with 4-

to 16-ohm headphones)

.5.6 kilohms 5. OUTPUT SELECTOR Slide Switch-Selects be-

. . . . . . .Pins 1 through 8 of ACCESSORY

connector are out of phase with,

and

pin 9

with, pin 3 of

&pin connector, tips of

put LINE LEVEL and PHONES recording equipment.

jacks,

phono pin jack

and

in phase

LlNE LEVEL out-

tip

MIX

BUS

. . . . . . .Channel Volume: rotary, linear

taper; MASTER Volume: rotary, audio taper

. . .

SR110: 108-132 Vac, 50/60 Hz. SR110-2E:

Vac, 50/60 Hz.

. . . .

.3 watts max. (Mixer only)

500

ac receptacle)

. . .

. .

. . . -7" to 54°C (+20° to 130°F) 11. Ac Grounded Line Cord-Connects ac power

. . . -29" to 71°C (-20" to 160°F)

105-1 25 or 21 0-250

watts

max. (non-switched

(SR110 only)

applies ac power to power supply.

PHONES Output Jack-Provides for connection of stereo or monophonic headphones for monitoring.

tween signal mixed in SRllO (MIXED INPUTS) or mixed in

6. MONITOR OUTPUTS/LINE LEVEL Three-Circuit Phone Jacks (Two)-Provide balanced Monitor

Mixer output connection to power amplifier or

7. MONITOR OUTPUTS/LINE LEVEL 3-Pin Male

Connector-Provides balanced Monitor Mixer output connection to power amplifier or recording

equipment.

8. ACCESSORY INPUT AND OUTPUT Cable Pin Male Connector-Provides for input connections from Shure

ment.

9. ACCESSORY INPUT AND OUTPUT Multi-Pin male Connector-Provides for connection of tional parallel-wired (tandem)

10. MIX BUS Phono Jack-Provides common mix bus when two to be operated in a common mix mode.

source to

SRlO1 or SR109 (PROGRAM INPUT).

SRlOls or SRlO9s and two SRllOs are

SR110 power supply (SRllO only).

. . . . . . . .44.4 mm height X 483 mm 12. Non-Switched Ac Grounded Receptacle-Provides

width X 232 mm depth (1 X 19 in. X 9% in.)

. . . . .

. .

. . . . .

. . . .

. . . .Equipped for standard 19 in.

kg (8 Ib, 8 oz)

. .3.9

black

Matte

(483 mm) audio rack mount-

may be operated in

ing;

optional-~105~' Carrying Case

SR109)

(with

tories, Standards Association as certified (SR110 only)

Inc.; listed by Canadian

INSTRUCTIONS

(Refer to Figures A and B)

3/4

in.

up to 500 watts of non-switched ac power to cessory equipment

13. AC (MAINS) POWER 3-Pin Connector-Connects

unit to ac (mains) power source via supplied line cord

(SR110-2E only).

14. VOLTAGE SELECTOR Slide Switch-Selects 105-

125V or 210-250V input power

General Operating Instructions

WARNING

To reduce the risk of fire or electric shock, do not expose this appliance to rain or extreme moisture.

in standard 19 in. (483

Multi-

SR101 or SR109 or similar equip-

Fe-

SRll 0s.

(SR110 only).

(SR110-2E only).

SR110 securely

mm) rack or optional A105A

addi-

ac-

IMAINS!

POWER

*'c,,X?,I

-0.'

.*O

I,&

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.dl

1,1*

.:,

>>.>

IL'

$",*I

SR110-2E

ONLY

FIGURE

SR110 REAR PANEL

?..Ll.i..

Connect SR110 MONITOR OUTPUTS/LINE LEVEL

3-pin connector and/or phone jacks (7,

power amplifier and/or recording equipment.

3. Connect PUT Multi-Pin Male Connector

SR110 ACCESSORY INPUT AND OUT-

(8)

to SRlOl or

SR109.

4. If additional SRllO is to be used (tandem operation), connect ACCESSORY INPUT AND OUTPUT Multi-Pin Male Connector (8) of second

SR110 to ACCESSORY INPUT AND OUTPUT Female Connector (9) of first

SR110.

5. If common mix between two SRlOls or SRlO9s and two SRllOs is desired, interconnect MIX BUS Phono Jacks (10) of each SR110 and interconnect the link output jacks of the SRlOls or

SRlO9s.

6. (SRl10-2E only) Move VOLTAGE SELECTOR Switch (14) to 115V or 220V position as required.

Connect ac line cord to grounded 108- to 132-volt (SRl1 O), or 105-1 25V or 21 0-250V (SR110-2E), 50/60

ac source.

8. Turn on front-panel POWER OFF Switch on MASTER Volume Control (3). Red indicator lamp (2) will light, indicating power is being applied.

9. Adjust

SRlO1 or SR109 and associated power

amplifier for desired operating levels.

10. Adjust SRllO and associated power amplifier and/or recording equipment for desired operating levels.

11. Set OUTPUT SELECTOR Switch (5) to MIXED INPUTS or PROGRAM INPUT as desired.

Mounting and Ventilation

SRl10 Professional Monitor Mixer is designed

The for rack-mounting in a standard 19 in. (483 mm) audio equipment cabinet rack and is supplied with the necessary mounting hardware (see Figure C). If possible,

SR110 should be rack-mounted above its as-

the sociated

SRl 01 or SR109.

The SR110 may also be operated while mounted in

a Shure

A105A Carrying Case. The A105A will accept

panel heights of 7 in. (178 mm), providing space for

SRl10 and one SR109 Professional Mixer.

one

44.4

(1-3/4 IN)

FIGURE

OVERALL DIMENSIONS

No special precautions are required for ventilation.

The

SRl10 may be operated over a temperature range

-7" to 54°C (20" to 130°F) in continuous duty with-

of out derating.

Power Supply

The

SR110 Professional Monitor Mixer is furnished with a three-conductor power cable and three-prong grounded plug (11). Connect the which supplies 108 to 132 volts ac, 50/60

SR110 to an outlet

power. The nominal power consumption at 120 volts under normal operating conditions is 3 watts maximum (0.025 amperes at 120 volts). If extension cords are required to supply power to the

SR110, a high-quality, 18-gauge

or larger cord should be used.

The

SRl10-2E is furnished with a three-conductor line cord without a power plug. Obtain a suitable threepin male power plug and attach it to the line cord. The plug should be installed by qualified service personnel.

(Brown lead goes to "hot" or "live" terminal, blue lead

to neutral terminal, and

green/yellow lead to ground or earth terminal.) Select proper operating voltage (115V for 105-125V supply or 220V for 210-250V supply) using the VOLTAGE SELECTOR Switch (14).

A POWER-OFF Switch located on the front-panel MASTER Volume Control (3) controls the application of ac power to the

SRl10, and a red indicator lamp

(2) indicates the power-on condition. Functional Circuit Description

The inputs to the SRllO Professional Monitor Mixer enter through the 11-pin

the cable (8) (see Figure D). The 11-pin female

male connector located on

con-

INPUT

AND OUTPUT

-----C-

CHANNEL

VOLUME -MIX

MIX

RESISTOR

MASTER VOLUME

CONTROL

-1

OUTPUT

TRANSFORMER

-24

HEADPHONES TRANSFORMER

FIGURE D.

SR110 BLOCK DIAGRAM

nector (9) is wired in parallel, and provides connection for additional (tandem) SRllOs.

With the OUTPUT SELECTOR Switch (5) in the MIXED INPUTS position, the input signals from the individual channels of the the individual channel Volume Controls mixing amplifier, a -2 dB mixing resistor, and the OUTPUT SELECTOR Switch before reaching the MASTER Volume Control Switch in the PROGRAM INPUT position, the program input signal from the through the OUTPUT SELECTOR Switch to the MASTER Volume Control. The MIX BUS Jack (10) is connected after the mixing resistor and before the OUTPUT SELECTOR Switch. The MIX BUS Jack is for parallel operation of two or more SRIIO

enters a +42 dB amplifier stage. The amplifier output (-24 dB) output transformers. The line level trans-

former feeds a three-pin professional male audio connector phone jacks (6). The headphone transformer feeds a standard designed for use with 8 ohm stereo or monophonic headphones.

Inputs and Outputs PUT AND OUTPUT 11-pin male connector (8). Pins 1

through 8 are the individual channel signals derived from the eight equalizer circuits), pin 9 is a total program signal (taken from the or

nected to the male connector (9) is wired in parallel with the male

connector, and provides for connection of additional

(tandem)

consists of one three-pin professional male audio connector phone jacks (6). These connectors provide three line level, 600-ohm, balanced outputs to power amplifiers or recording equipment.

connection when two SRlOls or more SRllOs are to be operated in a common mix mode (16 channels). If more than two SRllOs are used "Y" adapters can be used to connect the additional MIX BUS Jacks.

circuit (stereo) phone jack designed for use with 8-ohm stereo or monophonic headphones.

Stage Monitor

junction with the CESSORY INPUT AND OUTPUT male connector (8) to the female connector (see Figure channel Volume Controls (1) to be monitored on stage; turn the remaining channel Volume Controls to With the OUTPUT SELECTOR Switch in the MIXED IN-

combinations, providing 16 inputs with the OUT-

PUT SELECTOR Switch in the MIXED INPUTS position.

From the MASTER Volume Control

is fed to both line level (-1 dB) and headphone

(7)

and two standard

in. three-circuit (stereo) phone jack (4)

SR110 inputs enter through the ACCESSORY IN-

All

SR101 or SR109 channels (following the

SRlOl Monitor post link-pre link Switch

SR109 link input jack), pin 10 is the SR101 or SR109

+30 Vdc supply voltage and is not internally con-

SR110 supply, and pin 11 is ground.

The ACCESSORY INPUT AND OUTPUT 11-pin fe-

SRll 0s.

The MONITOR OUTPUTSILINE LEVEL connectors

(7)

and two standard

The MIX BUS Phono Jack (10) provides a common

The PHONES Jack

To use the

SRlO1 or SR109 ACCESSORY OUTPUTIAUX LEVEL

SR110 as a stage monitor mixer (in con-

SR101

SR101 or SR109 go through

(3).

With the OUTPUT SELECTOR

SR101 or SR109 goes directly

1/4"

three-circuit (stereo)

in. three-circuit (stereo)

(4)

is a standard

or SR109), connect the AC-

E).

Turn up the individual

(I), a -1 dB

SR101 or SR1091

(3),

the signal

SRIO9s and two or

1/4

in. three-

0 (off).

SRlOl CONSOLE

SR109

STAGE MONITOR CONNECTIONS

PUTS position and the MONITOR OUTPUTS connected to the stage monitor power amplifier input, a separate mix of inputs can be provided for stage monitoring.

SRI10 monitors the SR101 or SR109 individual

The channels after the tenuator, volume and equalizer controls.

With the OUTPUT SELECTOR Switch in the PRO-

GRAM INPUT position the stage monitor has the same

mix as the

SR101 or Sf3109 are used for the "house" PA system. Broadcast Line, House PA and Stage Monitor

If the cast line for radio or TV audio, and separate house PA and stage monitor systems are required, a number of SRllOs may be connected as shown in Figure F. The program output of the broadcast line, the monitor output of the first feeds a stage monitor power amplifier, and the monitor output of the second (parallel-wired) house system power amplifier. Note that since the ACCESSORY INPUT AND OUTPUT Connectors (8, 9) of the be parallel-connected.

The individual channels that are not to be fed to the stage monitor or house PA can be left off by turning their Volume Controls (1) to

Stereo or Multi-Channel Tape Recording

A set-up similar to that described under Broadcast Line stereo broadcasting. The monitor output from one SR110 is connected to one input of the tape recorder and the other permits the user to select the desired mix on each recording channel. For recording on more than two channels, additional SRllOs can be added as desired.

16-Channel Mixer

For applications requiring the use of more than eight

channels, two SRlOls or channel mixing system by connecting their LINK OUTPUT Jacks. Monitoring of all 16 channels can be accomplished by connecting two SRllOs to the SRlOls or

SRlO9s as shown in Figure

SRlO1 or SR109. The program outputs of the

SR101 or SR109 is to be used to feed a broad-

SR110 are in parallel, up to eight SRllOs may

above can be used to record a stereo tape or for

BROADCAST LINE CONNECTIONS

ACCESSORY

MIXER

FIGURE E.

SR101 or SR109 channel input at-

SR110 to the remaining input. This set-up

FIGURE

INPUT TO

4ii~

SR101 or SR109 feeds the

SR110 feeds the

0 (off).

SRlO9s can provide a 16-

The male ACCES-

MONITOR

OUT

STAGE

SR110

TO STAGE

MONITOR

POWER

AMPLIFIER

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