GENERAL
The Shure Model M267 is a microphone mixer-remote
amplifier specifically designed for professional applications.
The excellent performance, versatility and features of this
complete, compact console make it an ideal choice for stu-
dio, remote, or sound reinforcement use, and as an add-on
mixer for expanding existing facilities. It is also ideally suited
for use with audio and video tape recorders to provide multi -
ple microphone inputs.
Features:
SWide, flat frequency response and extremely low dis-
tortion up to +18 dBm output
SExtremely low noise and RF susceptibility
SFour switchable microphone- or line-level balanced-line
inputs with individual gain controls and low-frequency
rolloff switches. MUMETAL shielding on input transform-
ers
SFeedback-type input gain controls for maximum clip-
ping levels and dynamic range
SOutput switchable for line or microphone level
SBuilt-in switchable peak limiter cuts output overload
distortion, adapts to power supply voltage
SLED indicator shows limiter operation or overload with
limiter defeated
SExternally adjustable limiter threshold (–4 to +18 dBm)
SVU meter calibrated for +4 and +8 dBm with range
switch. Illuminated with ac operation
SAc or built-in battery operation. Noiseless automatic
switchover to battery in case of ac line failure. Battery
test without program interruption
SFront-panel headphone level control and monitor jack
drives almost any stereo or mono headphones; output
can be additional unbalanced line feed to drive a tape
recorder or power amplifier
SDirect mix bus for stacking units
SAutomatic muting prevents speaker damage during
turn-on and -off
SLow distortion, high-stability tone oscillator for line test
and level checks
SAll connections phased. Line output terminals phase-
indicated
SCompact and lightweight, with rugged, abrasion-resis-
tant case
SInternally selectable 120 or 240 Vac, 50/60 Hz opera-
tion
SUnderwriters’ Laboratories Listed and Canadian Stan-
dards Association listed as Certified
SPECIFICATIONS
Frequency Response
30 Hz to 20,000 Hz, ±2 dB
Voltage Gain (at 1,000 Hz)
(Outputs terminated: line 600 W, microphone 150 W, mix
bus 3.3 kW, headphone 200 W, tip-sleeve and ring-
sleeve )
Inp t
OUTPUT
Input Line Microphone Mix
Bus
Low-Impedance
Microphone (150 )91 dB 41 dB 24 dB
Line 40 dB –9 dB –27 dB
Mix Bus 55 dB 5 dB – –
Inputs
IMPEDANCE
Input
Designed
for Use
With
Actual
(Internal) Input
Clipping Level
Microphone 19 to
600 1 k–32 dBV to
–5 dBV
(25 mV to 0.56 V)
Line Less
than10 k66 k+20 dBV
Mix Bus 3.5 k3.5 k+7 dBV (2.2 V)
Depending on input control setting
Shure Brothers Incorporated
222 Hartrey Avenue
Evanston IL 60202-3696 U.S.A.
Model M267 User Guide
27A8376 (SE)
E1999, Shure Brothers Incorporated Printed in U.S.A.