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2 2 2 HARTREY AVL, EVANSTON. IL. 6 0 2 0 4 U.S.A.
I
MODEL PE7ORM
DATA
REVERBERATION MICROPHONE/
@
AREA C O O E J ~ ~ / ~ ~ E . ~ O W
.
CABLE: SHUREMICRO
SHEET
INSTRUMENT MIXER
I
GENERAL
The Shure Model PE70RM is a four-channel, com-
pletely transistorized, portable microphone/instrument
mixer with built-in reverberation, for use with public
address systems and musical instrument amplifiers.
The Model PE70RM provides a practical, efficient and
economical way to use up to four electric guitars,
basses, consolette organs, or microphones, or any
combination of four with your existing amplifier or
system.
The Mixer features:
Adjustable reverberation to simulate the natural
reverberation or echoes of a large concert hall.
Connection provided for use with remote rever-
beration On-Off switch.
m
No interaction between channels when volume
controls are changed.
Connection for battery power supply.
Listed by Underwriters' Laboratories, Inc. and
listed by Canadian Standards Association as
certified.
OPERATION
Input Connections
NOTE: Before using mixer, remove shipping screw
(located on top of chassis) holding small tag
and discard.
Up to
4
inputs per mixer--electric guitars, basses,
consolette organs, high-impedance dynamic or ribbon
microphones or any combination. If you desire to use
even more instruments and microphones, the mixer
can be connected together with a Shure Model PE68M
Mixer. (See paragraph on Interconnecting Two Units.)
The input connections are standard phone jacks
marked 1, 2, 3,
4.
Crystal or ceramic microphones are
not recommended for use with the PE70RM Mixer.
Volume Controls
Each input has a separate volume control for bal-
ancing sound between instruments or vocalist. A mas-
ter volume control simultaneously adjusts volume of
the entire sound system and is an indispensable
feature where the regular amplifier controls are not
readily accessible.
The individual gain controls should generally be set
near maximum (8 or 9 on dial) and the master gain
control adjusted to required output. Individual channel
volume controls not being used should be kept at
minimum gain (0 on dial).
Identifying Controls
Pressure-sensitive adhesive labels are supplied with
the PE70RM Mixer as a means of identifying the con-
trol and indicating the control position when optimum
results have been obtained. The labels are easily re-
moved or easily erased (when using pencil) when
their use is no longer required.
REAR VIEW
OF MODEL PE70RM
Output Connections
Connect it to any amplifier. Standard output con-
nections work into musical instrument amplifiers,
microphone inputs, or the power amplifier of the exist-
ing sound system.
Guitar Amplifier Output: The jack marked GUITAR
AMP. OUTPUT is a high-impedance medium level out-
put designed to feed a musical instrument amplifier.
Any high-quality shielded guitar cable may be used to
connect the mixer to the amplifier.
Microphone Output: The receptacle marked MIC.
OUTPUT is a high- or low-impedance output (selected
by the switch above the receptacle). The output is the
"mixed" output of all input sources and is designed to
feed a 50 to 250 ohrr microphone input, a high-imped-
ance amplifier, or tape recorder. The MIC. OUTPUT
receptacle on the mixer is a professional three-pin
male audio connect0r.t (See Figure A for output plug
connections.) The Model A68C Output Cable Kit (Ac-
cessory) provides a simple and effective method of
connecting the mixer to virtually any PA microphone
input.
MIC. O U T P U
MIC. OUTPUT
HIGH IMPEDANCE
LOW IMPEDANCE
(BALANCED LINE
l
MICROPHONE
OUTPUT PLUG CONNECTIONS
FIGURE A
Power Amplifier Output: The jack marked POWER
AMP. .OUTPUT is a high-impedance high level output
designed to feed a power amplifier in a PA system,
the auxiliary input of a tape recorder, or the tuner
input of a high-fidelity amplifier.
All outputs may be used simultaneously. Example:
The Guitar Output can be used to feed a guitar ampli-
fier while using the Microphone Output to feed the
sound system in a club.
When all connections have been made, turn on the
unit and advance the volume controls for desired
results.
Power: Connect the microphone/instrument mixer
power line cord to a 108-132 volt 50/60 Hz ac power
outlet. Voltage is 26 Vdc open circuit (20 Vdc at
4
mA
max.).
f Designed to mate with Cannon XL series, Switchcraft A3
(Q.G.) series or equivalent connector.
Copyright 1966, Shure Brothers Inc.
27A1139 (OC)
P r i n t d in
U.S.A.
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