Shure SE20 User guide

Shure
Brand
Shure
Model
SE20
Type
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
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Shure SE20 User guide

Shure
Brand
Shure
Model
SE20
Type
User guide
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