I
222
HARTREY
AVE..
EVANSTON. IL.
60204 U.S.A.
1
MODEL SR110 A)
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MICROPHONES
AND
ELECTRONIC
COMPONENTS
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SRI 10-2E
PROFESSIONAL
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SHEET
MONITOR MIXERS
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TWX:
910-231-0048 TELEX: 72-4381
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OPERATION AND
DESCRIPTION
The Shure Model SR110 Professional Monitor Mixer
is a rack-mounted, eight-channel, line level mixer, de-
signed as an accessory for the Shure Model
SRlO1
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
SR110 can also
be used in multi-track recording applications as a re-
cording mix panel or in stereo broadcasting.
Interconnections between the
SR110 and the SRlO1
or SR109 are made through a single multi-pin con-
nector and cable permanently attached to the SRllO.
The
SR110 also contains a matching female multi-pin
connector for "stacking" additional
SRllOs.
The SR110 provides eight high-impedance, unbal-
anced, line level inputs to its mixing circuitry, and one
high-impedance, unbalanced line level input to its
output selector switch for monitoring program mate-
rial. The output of the
SR110 is a 600-ohm balanced
line level with one three-pin male professional audio
connector and two standard
'/4
inch three-circuit
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.
The
SR110 and SR110-2E are identical except that
the SRllO operates from 108-132 Vac, 50160 Hz, and
the
SRllO-2E operates from either 105-125 or 210-250
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
A105A Carry-
ing Case (mounted with an
SR109). In addition, the
SR110-2E is supplied with a detachable ac line cord
(without power plug). The
SRl10 (only) is listed by
Underwriters' Laboratories, Inc., and is listed by
Canadian Standards Association as certified.
SPECIFICATIONS
Type
.
. . . . .
.
. . .
. .
.
.All silicon transistor monitor
mixer
SERVICE MANUAL
Number of lnput
Channels
.
.
. . .
.
.
.8 mixed inputs; 1 program input
Power Output
. . . . .
.
+19.2 dBm (LINE LEVEL Output)
Voltage Gain*
Mixed
Inputs**
.
.
.
. . .
.38 i2.5 dB (LINE LEVEL Output)
14.5
t2.5 dB (PHONES Output)
-8
+-2
dB (MIX BUS)t
Program
Input**
. . . .
.
.
.
.40 +-2 dB (LINE LEVEL Output)
Frequency
Response
.
.
.
lnput Sensitivity
.
. .
Distortion
. .
. . . . .
.
.
Noise
(300 HZ-20
kHz)
Mixed
Inputs**
.
. . . . .
.
i3 dB, 20 Hz-20 kHz (LINE
LEVEL Output)
.21
mV max. for +4 dBm line
level output
.THD less than 1
%
at
+
12 dBm,
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)
Program
Input**
.
.
.
.
.
.
.
.
-58 dBV max. (MASTER
Volume Control up)
Hum and Noise
(20 Hz-20 kHz)
. .
.
-
64 dBV max. (MASTER
Volume Control down)
Mixed
Inputs**
. . . . .
.
.
-50 dBV max. (MASTER and
channel Volume Controls up)
Program
Input**
.
.
.
.
. .
.
.
-54 dBV max.
(MASTER
Volume Control up)
lnput Clipping
Level at
1 kHz
.
.
.
.2.5V min. on mixed inputs 1-8
with channel Volume Controls
set at max. (input clipping
level increases with decreased
setting of channel Volume
Control)
lnput Impedance
at 1 kHz:
Mixed
Inputs**
.
.
. . . .
.23.5
kilohms
Program
Input**
.
.
. .
. . .
.30
kilohms
*Measurement conditions: Inputs through
150
ohms, LINE LEVEL output
terminated in
600
ohms,
PHONES
output terminated in
8
ohms,
MASTER
and channel Volume full up.
**OUTPUT SELECTOR
Switch position.
+MIX
BUS
terminated
in
5.6k.
Copyright 1979, Shure Brothers Inc
27A1291
(56)
Printed in
U.S.A.
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