Shure SE20 User guide

monaural source to one channel

of

the

SE20,

the

SE20

input should be shunted with a

47,000

ohm resistor

or the high frequency trimmer should be readjusted for

proper high frequency equalization.

Outputs:

Output terminals appear on the rear panel as

shown in Figure

C.

Outputs are balanced and designed

to feed a

150

ohm

or

600

ohm line.

REAR PANEL

FIGURE

C

Channel Level Controls:

These controls are located on

the front panel designated as “Channel A Level” and

“Channel

B

Level.” They are used to adjust the overall

operating level of the

SE20

and to balance the individual

levels of the two channels.

Response Trimmers:

To

allow for balancing the

response of the two channels

of

a stereo cartridge,

or

of two monaural cartridges, high and low frequency

response trimmers are provided for each channel. Figure

D

shows the location of these controls and Figure

E

shows the range and character

of

the response change

obtainable.

LOW

FREQUENCY

TRIMVER

HIGH

FREQUENCY TRIMMER

t20

fl

-

110

z

w

(0

0

go

Lz

w

$-I0

a

_I

w

Lz

-20

20

50

100

1,000

10,000

20,000

FREQUENCY

IN

HERTZ

TYPICAL EFFECT OF RESPONSE TRIMMERS

FIGURE

E

220

Volt Operation:

The power transformer may be

restrapped for operation with

220

volt

A.C.

supply.

To

make this change, see instructions

on

schematic

for

revising power transformer connections.

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 re-

turned to you prepaid.

1

RESPONSE TRIMMERS

SIDE VIEW (COVER REMOVED)

FIGURE

D

I

jlfiTSklM,

15KHZ-R23

30HZ

-

R25

3.

ALL RESISTORS

112

WATT 59 CARBON COMPOSITION

UNLESS SHOWN. POTENTiOiETERS

20%

TOLERANCE.

2.CHANNEL

"n"

IS

SHOWN,

4.ALL NON -ELECTROLYTIC CAPACITORS

IN

MFD.

10%

CHANNEL'B"

IS

IDENTICAL AND

'100

VOLTS

OR

MORE UNLESS SHOWN.

TO CHANNEL "A':

ELECTROLYTIC CAPACITORS SHOWN IN MFDXVOLTS

(TOLERANCE,-I0

f50

UNLESS SHOWN).

MODEL

SE20

STEREO TRANSCRIPTION PREAMPLIFIER SCHEMATIC

Shure SE20 User guide

Shure SE20 User guide

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