Shure PE70RM-2 User Guide

'.

Guarantee:

trical and mechanical defects for
factory, provided all instructions are complied with fully.

The Shure Model PE70RM-2 Mixer is guaranteed to be free from elec-

a

period of one year from date of shipment from the

In

case of damage,

it

essential that you carefully repack the unit and return it to the factory, or, if outside
of the United States, to your dealer or authorized Shure Service Center for repair.
Guarantee is voided if the basic assembly has been opened or subjected to unreason­ably rough handling.

Gain:

At

1,000

Hz (cps).

Input

5.0

mv produces

Frequency Response:

17,000

to

Hum-Noise:
Input Impedance:

Hz. (cps)

.

60 db below rated output.

Low

Imp.

Mic. Mic. Guitar Amp. Aux.

.4

mv 6.7 mv

High

The frequency response is flat

Inputs suitable for high impedance dynamic and ribbon micro-

outputs

Imp. Power Amp.

22.5

+-2

mv

db from

30

Hz (cps)

85

mv

phones and electrified instruments.

Case:

Painted metal

Nee Weight:
Dimensions:

3

pounds.

See Figure

C

Lk,2

APPROX

15

5mml

OVERALL

DIMENSIONS

Figure

C

is

General:

The Shure Model PE70RM-2 is a four-channel, completely transistorized,

portable microphone/instrument mixer with built-in REVERBERATION, for

AREA

CODE

312/328-3000

CABLE SHUREMICRO

use

with public address systems and musical instrument amplifiers.

a

The Model PE70RM-2 provides

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

a

large concert hall.

of

Connection provided for use with remote reverberation "ON-OFF" switch.

No

interaction between channels when volume controls are changed.
Connection for battery power supply.
Underwriter's Laboratories approved for use in commercial applications.

MOW

NOTE : Before using mixer, remove shipping screw (located

TO

USE

Input

THE

PE7B)RM-2

Connections

MIXER

on

top of chassis) holding

small tag and discard.

Up to

4

inputs per mixer-Electric guitars, basses, consolette organs, high imped-

ance 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

on

Model PE68M Mixer. (See paragraph
input connections are standard phone jacks marked
microphones are not recommended for use with the PE70RM-2 Mixer.

Connecting Two Units Together). The

1,

2,

3,

4.

Crystal or ceramic

Copyright

27A470

(I

1967,

Shure Brothers,

1-67)

Inc.

Printed

in

U.S.A.

Volume Controls

Each input has a separate volume control for balancing sound between instru­ments or vocalist. A master volume control simultaneously adjusts volume of the entire
sound system and is
are not readily accessible.

The individual gain controls should generally be set near maximum
dial) and the master gain control adjusted to required output. Individual channel
volume controls not being used should be kept at minimum gain

an

indispensable feature where the regular amplifier controls

(8

(0

on

dial).

or 9 on

Identifying Controls

Pressure sensitive adhesive labels are supplied with the PE70RM-2 Mixer as a
means of identifying the control and indicating the control position when optimum
results have been obtained. The labels are easily removed or easily erased (when using
pencil) when their

use

is no longer required.

Output Connections

Connect it to any amplcfier-Has standard output connections to work into

musical instrument amplifiers, microphone inputs, or the power amplifier of the existing

sound system.

Output 2
impedance medium level output designed to feed a musical instrument amplifier. Any
high quality shielded guitar cable may be used to connect the mixer to the amplifier.

Output

low impedance microphone output (selected by the switch above the receptacle).

output is the "mixed" output of all input sources and is designed to feed a 25 to 600

ohm microphone input,

OUTPUT 1 receptacle
nector
Output Cable Kit (Accessory) provides a simple and effective method

the mixer to virtually any P.A. microphone input.

Power Amplifier Output: The jack marked OUTPUT 3 is a high impedance high
level output designed to feed a power amplifier in a P.A. system, into the auxiliary
input of a tape recorder, or into the tuner input of a high-fidelity amplifier.

All outputs may be used simultaneously. Example
feed guitar amplifier while using Microphone Output 1 to feed sound system in club.

When all connections have been made, turn on unit and advance volume controls
for desired results.

Operating Voltage: 105-130 volts 50/60 Hz. (cps) or 210-240 volts 50160 Hz. (cps).

In the Model PE70RM-2, operating
panel. A switch lockplate is provided to prevent accidental switching to 105-130 volt
position. The microphone mixers are shipped with the operating voltage selector

switch locked in the 210-240 volt position. The lockplate can be removed from locking
position by loosening (do not remove)
lockplate
panel.

Accessory 28-volt

input when using the Model A68B Battery Power Supply (Accessory). When not using
mixer-turn
using A68B).

(Guitar Amplifier Output)

1

(Microphone Output) : The receptacle marked OUTPUT 1 is a high

a

high impedance amplifier, or tape recorder.

on

(see

Figure A for the output plug XLR-3-11C connections). The Model A68C

the mixer is a male three-pin Cannon XLR-3-14 type con-

:

The jack marked OUTPUT 2 is a high

of

CANNON XLR-3-IIC PLUG TYPE

&7>!ilELP_~T

20

MIC. OUTPUT MIC. OUTPUT

90,"

off

'

L

-

_

__

-1y'

HIGH

IMPEDANCE LOW IMPEDANCE

MICROPHONE OUTPUT PLUG CONNECTIONS

and retightening the screw. The power on-off switch is on the front

DC:

To

convert to DC operation, this jack is used as a power

switch to conserve battery life (pilot light does not operate when

Figure A

~n--SBE!-D-~T

L-

_---

(BALANCED LINE)

:

Guitar Output 2 can be

voltage is selected by a switch on the back

the screw holding the lockplate, rotating the

or

The

The MIC.

connecting

used

to

Reverberation

The red control knob (on front panel) marked REVERBERATION is used

to adjust the amount

of

reverberation to the desired effect.

The standard phone jack (on back panel marked REVERBERATION REMOTE
SWITCH) is used to connect an "ON-OFF'' switch which can be operated through a
cable at a remote location to turn REVERBERATION on and
for switch connections.

off.

See Figure

TIP

CONDUCTORS

SLEEVE

SWITCH PHONE

REMOTE REVERBERATION CIRCUITRY

CAUTION: The PE70RM-2 Reverberation Mixer should not be set on or mounted
against a loudspeaker, as vibrations from the speaker cabinet may cause improper
operation of reverb. Avoid accidental jarring during operation.

Connecting Two Units Together

1. A PE70RM-2 Reverberation Mixer and a Shure PE68M five-channel Mixer may

be combined to give

case, four channels could have reverberation and four channels would NOT

have reverberation.

Unit 1-PE70RM-2

Unit 2-PE68M"

Connect the OUTPUT

A.

MENT INPUT on Unit 2.

B.

Connect the microphones or instrument to mixers and set each input control

to

#O

position.

Take the output signal for desired application from appropriate output jack

C.

on Unit 2.
Set Master Control

D.
E.

Set fifth MICROPHONE/INSTRUMENT INPUT Control on Unit 2

position #4.

F.

The Master Control on Unit 2 is now Master for all inputs.

Advance Master Control (UNIT

G.

vidual microphone controls for proper level. If overall gain is too

too high the Master Control (UNIT

2. A PE70RM-2 Reverberation Mixer and a Shure PE68M* five-channel Mixer may,

also, be combined to permit reverberation in all eight microphone/instrument
channels. In this case,

Unit

1

Unit 2 is the PE70RM-2.

A.

B.

C.

D.
E.

F.

G.

"'Note: The

is the PE68M,*

Connect the GUITAR AMP. OUTPUT 2 on Unit 1 to the fourth MICRO-

PHONE/INSTRUMENT INPUT on Unit

Connect the microphones or instrument to mixers and set each input control

to

#O

position.

Take the output signal for desired application from appropriate output jack

on Unit 2.

Set Master Control

Set fourth MICROPHONE/INSTRUMENT INPUT Control on Unit 2 to
position #4.

The Master Control on Unit 2 is now Master for all inputs.

Advance Master Control (UNIT 2) to about #5 position and adjust indi­vidual microphone controls for proper level. If overall gain is too low or

too high the Master Control (UNIT 2) may be adjusted.

PE68M

220

V.

is

A.C.

recommended as an accessory.

a total

(See

note below)

on

Unit 1 to position

on

Unit 1 to position

operates on llOV. A.C.

501'60

Hz

Figure

B

of

eight microphone/instrument channels. In this

2

on Unit 1 to the fifth MICROPHONE/INSTRU-

#lo.

2)

to about #5 position and adjust indi-

2)

may be adjusted.

2.

#

10.

50/60

Hz

(cps), a step-down transformer (ModelA68VT)

(cps).

PLUG

low

or

For use with

to

B