Shure pe68m owners manual

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shure pe68m owners manual

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Page 1

222 HARTREV AVE, EVANSTON, IL. 60204 U.S.IL

MICROPHONES MID ELECTRONIC cOMPONEIITS

® AREA CODE312/328~9000 . CABLE: SHUREMICRO

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GENERAL
The Shure Model PE68M is a five-channel, completely
transistorized, portable microphone/instrument mixer
for use with public-address systems and musical in-
strument amplifiers.

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The Mixer Features:

I Five microphone/instrument inputs. (Two or more
mixers can be connected together to obtain ad-
ditional microphone inputs. For example, two
mixers connected together will give a total of
nine microphone/instrument inputs.)

I Individual volume controls to balance each of
the five inputs.

I A master volume control to simultaneously con-
trol level of all inputs.

I A high- (unbalanced) or low-impedance (bal-
anced or unbalanced) microphone level output.
Impedance selected with slide switch to match
the microphone input of associated amplifier.

I Two high-impedance auxiliary outputs to drive a
power amplifier or guitar amplifier.

I A dc power supply jack. With the Model A673
Battery Power Supply (Accessory) connected to
this jack, the mixer is completely battery oper
ated.

I Listed by Underwriters Laboratories, Inc. and
listed by Canadian Standards Association as
certified.

GROUNDING
If there should be objectionable hum, ground the
metal chassis of the mixer to a good ground such as
a metal frame of a wall outlet or a water or steam pipe.
This is normally accomplished automatically through
the ground wire of the power cord.

INPUT CONNECTIONS
Microphones/Instruments: A maximum of five high-
impedance dynamic or ribbon microphones or electri-
fied musical instruments may be connected to standard
phone jacks marked 1, 2, 3, 4, and 5. The unit is not
recommended for use with crystal or ceramic micro-
phones.

OUTPUT CONNECTIONS

Microphone: The receptacle marked MIC. OUTPUT is
a dual-impedance output selected by the switch above

Copyright I976, Shure Eroihers Inc.
27A||38 (PF)

MODEL PEG8M

DATA
SHEET

MIXER

REAR VIEW OF MODEL PEéBM

the receptacle. This output is the mixed output of
all the input sources and is designed to work into a
50 to 250-ohm line or input, or into a high-impedance
amplifier. The MIC. OUTPUT receptacle on the mixer is
a professional three-pin male audio connector designed
to mate with Cannon XL series, Switchcraft A3 (0.6.)
series, or equivalent female connector. See Figure A
for output plug connections. The Model A680 Output
Cable Kit (Accessory) provides a simple and effective
method of connecting the mixer to virtually any PA
microphone input.

Power Amplifier Output: The jack marked POWER
AMP. OUTPUT is a high»impedance high level output
designed to feed a power amplifier.

Guitar Amplifier Output: The jack marked GUITAR
AMP. OUTPUT is a high-impedance medium level out-
put designed to feed a guitar amplifier. Any high
quality shielded guitar cable may be used to connect
the mixer to the Guitar Amplifier.

Accessory 28-volt DC: To convert to battery operation,
this jack is used as a power input when using the
Model A678 Battery Power Supply (Accessory). When
not using mixer, turn On-Off switch off to conserve
battery life (pilot light does not operate when using
A678). Voltage is 29 Vdc open circuit (20 Vdc at
6 mA max.).

OPERATION

Power: Connect the microphone/instrument mixer
power line cord to a 108-132 volt 50/60 Hz ac power
outlet.

Volume Controls: The Master Gain Control and the
individual gain controls for each of the five channels
are identified on the front panel.

The individual gain controls should generally be set
near maximum (fully clockwise) and the master gain
control adjusted to required output. Individual channel
gain controls not being used should be kept at a mini-
mum gain (fully counterclockwise),

Identifying Controls: Pressure sensitive adhesive labels
are supplied with the Mixer as a means of identifying
the control and recording the control position when
optimum settings have been determined. The labels
are easily removed when their use is no longer
required.

Printed in USA.

MICROPHONE/INSTRUMENT

Page 2

CONNECTING TWO UNITS TOGETHER
Two PEGBM Mixers may be combined to give total of
nine microphone or instrument channels.

A. Connect the GUITAR AMP. OUTPUT on Unit 1 to
the fifth MICROPHONE/INSTRUMENT INPUT on
Unit 2.

B. Connect the microphones or instruments to mixers
and set each input control to 0 position.

G. Take the output signal for desired application from
appropriate output jack on Unit 2.

D. Set Master Control on Unit 1 to position 4.

E. Set fifth MICROPHONE/INSTRUMENT INPUT Con-
trol on Unit 2 to position 10.

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

G. Advance Master Control (Unit 2) and all individual
Microphone/Instrument controls for desired level.

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MIG. OUTPUT MIG OUTPUT

HIGH IMPEDANCE LOW IMPEDANCE
(BALANCED LINE)

MICROPHONE OUTPUT PLUG CONNECTIONS
FIGURE A

OPTIONAL ACCESSORIES

SPECIFICATIONS

Gain (At 1,000 Hz)
Outputs

Low Imp. High Imp.
Input Mic. Mic.

5.0 mV produces .5 mV

Power Amp,
sun." Amp. Aux.

7.5 mV 22.5 mV 158 mV

Frequency Response
Flat i3 dB from 40 Hz to 20,000 Hz

Hum-Noise
60 dB below rated output

Input Impedance

Inputs suitable for high-impedance dynamic and
ribbon microphones and electrified instruments

Recommended Load Impedance
MIC. OUTPUT (LO) ....... 25 to 600 ohms
MIC. OUTPUT (HI) ........ 20,000 ohms or greater
POWER AMP. OUTPUT . . . .50,000 ohms or greater
GUITAR AMP. OUTPUT . . . .50,000 ohms or greater

Distortion
Less than 1% THD when MIC. OUTPUT (L0) is at
20 mV level, MIC. OUTPUT (HI) is at 200 mV level,
POWER AMP. OUTPUT is at 2.0V level, and GUITAR
AMP. OUTPUT is at 300 mV level.

Phase

All INPUTS and AMP. OUTPUTS are in phase. MIC.
OUTPUTS are out of phase with AMP. OUTPUTS.

Output Clipping Level

M W
MIC. (L0) 60 mV
MIC. (HI) .85V
POWER AMP. 4.0V
GUITAR AMP. 0.7V

Case
Painted metal

Dimensions
See Figure B

Net Weight
1.36 kg (3 lb)

Packaged Weight
1.62 kg (3 lb, 9 oz)

Handle/Tilt Bracket ......................... A67H
Battery Power Supply ........................ A673
Output Cable Kit ............................ A680
Locking Panel .............................. A68L
Rack Panel Kit .............................. A68Ft
Stacking Kit ................................ AGBS
Attaché Case ............................ A060
Line Matching Transformers ............. A95 Series
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OVERALL DIMENSIONS
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GUARANTEE

This Shure product is guaranteed in normal use to
be free from electrical and mechanical defects for a
period of one year from the date of purchase. Please
retain proof of purchase date. This guarantee includes
all parts and labor.

SHIPPING INSTRUCTIONS
Carefully repack the unit and return it prepaid to the
factory. If outside the United States, return the unit
to your dealer or Authorized Shure Service Center
for repair. The unit will be returned to you prepaid.