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SPECIFICATIONS
Measurement Conditions (unless otherwise specified):
Line voltage 120 Vac, 60 Hz (SCM800) or 230 Vac, 50 Hz
(SCM800E); full gain; 1 kHz.
Source impedances: Mic 150
:, Line 150 :
Terminations: Line 10 k:, Phones 300 :tip-sleeve and ring-
sleeve), Direct Out 10 k
:
Equalization controls adjusted for flat response, Channel 1
gain control full clockwise, other gain controls full counter-
clockwise
Frequency Response (Ref .1 kHz, channel controls centered)
50 Hz to 20 kHz r2 dB; -3 dB corner at 25 Hz
Voltage Gain (typical, controls full clockwise)
Output
Input Line Head-
phones
Direct Out
Low-impedance
mic (150 :)
80 dB 88 dB 34 dB
Line 40 dB 48 dB –6 dB
Aux 44 dB 52 dB —
Send/Return 20 dB 28 dB —
Inputs
Impedance
Input
Designed
for use with
Actual
(typical)
Input
Clipping Level
Mic 19-600 : 10 k: -15 dBV
Line
d2 k:
10 k: +22 dBV
Aux
d2 k:
10 k: +22 dBV
Send/Return
d2 k:
10 k: +18 dBV
Outputs
Impedance
Output
Designed
for use with
Actual
(typical)
Output
Clipping Level
Line >600 : 60 : +18 dBV
Headphones 8-200 :,
60 : recom-
mended
300 : +12 dBV
Direct Out >2 k: 1 k: +18 dBV
Send/Return >2 k: 1 k: +18 dBV
Total Harmonic Distortion
<0.1% at +18 dBV output level, 50 Hz to 20 kHz (through 20
Hz-20 kHz filter; Input 1 and Master at 5, all other controls full
counterclockwise)
Hum and Noise
Equivalent Input Noise: -125 dBV (150 : source; through
400 Hz–20 kHz filter)
Equivalent Input Hum and Noise: -123 dBV (150 : source;
through 20 Hz - 20 kHz filter)
Output Hum and Noise (through 20 Hz to 20 kHz filter;
channel controls full counterclockwise):
Master full counterclockwise: -90 dBV
Master full clockwise: -62 dBV
Common Mode Rejection
>70 dB at 1 kHz
Polarity
Mic/Line, Send inputs to all outputs are non-inverting; Aux
input to all outputs is inverting
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no
damage. Microphone inputs are not damaged by signals up
to 3 V; Line and Monitor inputs by signals up to 20 V
Equalization
Low-frequency: 6 dB/octave cut, adjustable corner from 25
to 320 Hz
High-frequency: r6 dB at 5 kHz, r8 dB at 10 kHz, shelving
Limiter
Type: Peak
Threshold: Switchable: off, +4, +8, +16 (dBm at output)
Attack Time: 2 ms
Recovery Time: 300 ms
Indicator: Lights red when limiting occurs
Input LEDs
Light at 6 dB below clipping
Phantom Power
46 Vdc open-circuit through 6.8 k
: series resistance per
DIN 45 596
Operating Voltage
SCM800: 120 Vac rated nominal (see Voltage Selection
for 230 Vac operation), 50/60 Hz, 200 mA
SCM800E: 230 Vac rated nominal (see Voltage Selection
for 120 Vac operation), 50/60 Hz, 100 mA
Temperature Range
Operating: 0
q to 60q C (32q to 140q F )
Storage: -30
q to 70q C (-22q to 158q F)
Overall Dimensions
44.5 mm H x 483 mm W x 317 mm D (1
3
/
4
x 19 x 12
1
/
2
in.)
Net Weight
4.3 kg (9 lb 9 oz)
Certifications
SCM800: Listed by Underwriters Laboratories, Inc.; listed
as Certified by Canadian Standards Association
SCM800E: Conforms to European Union directives; eligible
to bear CE marking; VDE GS-Certified to EN 60950;
EU EMC Immunity Requirements: EN50082-1
Replacement Parts
Knob, Channel Gain & Phones (white) 95A8238. . . . . . .
Knob, Master (blue) 95B8238. . . . . . . . . . . . . . . . . . . . . . . .
Line (Power) Cord (SCM800) 95A8389*. . . . . . . . . . . . . .
Line (Power) Cord (SCM800E) 95A8247*. . . . . . . . . . . . .
Link Cable 95A8889. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Three -Terminal Block Connector 95A8580. . . . . . . . . . . .
Service Statement
For additional service or parts information, please contact
the Shure Service Department at 1-800-516-2525. Outside
the United States, please contact your authorized Shure
Service Center.
*For systems requiring other mains connectors, use a power cord with
an IEC 320 type mating connector for connection to the SCM800, and
an appropriate plug on the other end for connection to the mains. The
supplied cord uses Harmonized IEC Cordage with color coding as fol-
lows: Brown = Line, Blue = Neutral, Green/Yellow = Ground.