SE22 User Guide
H
2 2 2
PROFESSIONAL PRODUCTS DATA] +I
D
-
HARTREY
AVE.,
EVANSTON,
IL.
6 0 2 0 4
U . S . A.
AREA
CODE
3121328-9000
CABLE:
SHUREMICRO
The SE22 is a two-channel, solid-state, equalized
preamplifierlline amplifier designed to provide the
highest quality disc reproduction for broadcast and
recording studio applications. While primarily designed for stereo use, it may be very effectively
utilized for two separate monophonic channels.
Features include:
c Precise RIAAINAB equalization.
c Completely solid state.
c High-impedance inputs properly match almost all magnetic disc reproducers.
Individual high- and low-frequency equalization trimmers on each channel.
Individual channel level controls.
c Extremely low noise and rf susceptibility.
c Full line output capability.
Output lmpedance
For 600 or 150 ohm balanced line (approximately
80 ohms actual)
SPECIFICATIONS
Frequency Response
RIAAINAB disc playback characteristic within
+IdB from 30 to 15,000 Hz (NAB 1964 Disc
Standard, recommended low frequency roll-off - 6
dBIoctave, 3 dB down at 20 Hz)
Operating Temperature
Within 0.5 dB of all specifications at - 7 to 57°C
(20 to 135°F)
Gain
54 dB, adjustable
Weight
2.57 kg (5 Ib, 14 oz)
Distortion
Less than 0.5% THD at +20 dBm from 30 to
20,000 Hz
Operating Voltage
120 volts t 1 0 % at 50-60 Hz. 240 volts + - l o % at
50-60 Hz. (See section on 240-volt operation)
Overall Dimensions
See Figure B
Channel Separation
10,000 Hz, 50 dB minimum
1,000 Hz, 50 dB minimum
100 Hz, 42 dB minimum
Hum and Noise
At least 60 dB below + 6 dBm output (gain set
for + 6 dBm output with 5 mV input, 32 to 18,000
Hz bandpass filter)
lnput lmpedance
47,000 ohms
FIGURE B
OVERALL DIMENSIONS
CONTROLS, CONNECTIONS,
AND OPERATION
Inputs
lnput jacks (phono type) are located on the rear
panel and designated "A" and "B." Channel level
controls and output terminals are correspondingly
lettered. Any magnetic pickup designed for operation with a 47,000 ohm input termination may be
directly connected to these jacks.
FIGURE A
MODEL SE22 WITH COVER
Copyright 1976, Shure Brothers
27A1289 (PC)
The SE22 may be used either as a stereo preamplifier or as two separate monophonic channels.
If a stereo cartridge is to be used (with its channels
Inc.
Printed in
U.S.A.
m
(0)
paralleled) as a monophonic source to one channel
of the SE22, the SE22 input should be shunted with
a 47,000 ohm resistor or the high frequency trimmer
should be readjusted for proper high frequency
equalization.
120
'0
n
Z
-t10
W
"7
Z
%
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.
0
LL
W
?-lo
a
J
W
LL
-20
20
50
100
1.000
FREQUENCY IN HERTZ
10.000
20,000
TYPICAL EFFECT OF RESPONSE TRIMMERS
FIGURE E
220/240 Volt Operation
The power transformer may be restrapped for
operation with a 220/240 volt ac supply. To make
this change, see instructions on the circuit diagram
for revising the power transformer connections.
REAR PANEL
FIGURE C
Channel Level Controls
These controls are located on the front panel
designated as "A Level" and "B Level." They are
used to adjust the overall operating level of the
SE22 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 monophonic 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.
RESPONSE TRIMMERS
TOP VIEW (COVER REMOVED)
FIGURE D
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.
114 A SLO-EL0
POWER
5 0 - 6 0 Hz
OUTPUT
NOTES:
1. E Q T R I M
{::
~ ~ z - - R ~ : 7 c ~ 4 1 ~ 1
2. C H A N N E L "Aii I S S H O W N ; C H A N N E L "B" I S
IDENTICAL, EXCEPT USE REFERENCE
DESIGNATIONS ENCLOSED I N PARENTHESES.
5. P O W E R T R A N S F O R M E R T 3 I S S H O W N
STRAPPED FOR 1 1 0 V O L T MAINS;
F O R 2 2 0 VOLT:
E:
3. ARROWS O N POTENTIOMETERS DENOTE CLOCKWISE
ROTATION, A S VIEWED F R O M ACTUATORS.
~ ~ A S p T R ~ ~ S N ' 2 1 ' L ABTYE B
DR O K E N
LINE.
C. CHANGE FUSE F 1
'IaA
SLO-BLO'
4. FRONT PANEL L E V E L C O N T R O L S A R E R 1 2 (R381.
6.
0D E N O T E S
7
ALL RESISTORS ARE 112 WATT
5%. C A R B O N
COMPOSITION. U N L E S S S H O W N O T H E R W I S E .
POTENTIOMETERS HAVE 2 0 % TOLERANCE. VALUES
A R E I N OHMS.
8.
A L L NON-ELECTROLYTIC CAPACITORS H A V E
V A L U E S G I V E N I N MFD.. 1 0 % T O L E R A N C E . A N D
H A V E 1 0 0 V O L T S M I N I M U M RATING, UNLESS
SHOWN OTHERWISE. E L E C T R O L Y T I C C A P A C I T O R S
H A V E V A L U E S G I V E N I N MFD. X V O L T S , AND H A V E
T O L E R A N C E OF + 5 0 % , - l o % , UNLESS S H O W N
OTHERWISE.
il
DC V O L T A G E ;
DENOTES AC
VOLTAGE. A L L V O L T A G E S M E A S U R E D W I T H
S U P P L Y P O W E R O F 1 2 0 V A C . 6 0 Hz. U S I N G 1 0
DIODES
2N5210~pp
M E G O H M V T V M . AC V O L T A G E S M E A S U R E D W l T H
IOmV. 1 k H z INPUT. W l T H G A I N S E T T O 4 0 . 8 dB.
A N D W I T H 6 0 0 OHM L O A D .
.-
I INTEGRATED CIRCUITS
I L M 3 0 1 SELECTED2 1 LM301
SELECTED
IC
1
16-0014
MODEL SE22 STEREO TRANSCRIPTION PREAMPLIFIER CIRCUIT DIAGRAM
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