Replacement Parts - Shure SCM810 Specification Sheet

SCM 810 AUTOMATIC MICROPHONE MIXER
Outputs
Impedance
Designed
Output for use with
>600 Ω
Line
8-200 Ω,
Head-
60 Ω recom-
phones
mended
Direct Out >2 kΩ
Send/Return >2 kΩ
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
(150 Ω source; through 400 Hz - 20 kHz filter)
Equivalent Input Hum and Noise
(150 Ω source; through 20 Hz - 20 kHz filter)
Output Hum and Noise (through 20 Hz to 20 kHz filter; chan-
nel controls full counterclockwise)
Master full counterclockwise . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-90 dBV
Master full clockwise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-70 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
Input Channel Activation
Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hold Time . . . . . . . . . . . . . . . . .
Decay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Attenuation
∞
15 dB (switchable to )

REPLACEMENT PARTS

Knob, Master & Phones (white)
Knob, Channel Gain (blue)
Line (Power) Cord (SCM810)
APPLICATIONS
The SCM810 has numerous applications in sound rein-
forcement, audio recording, and broadcast. In any speech
pickup application where multiple microphones are required,
the SCM810 dramatically improves audio quality. Automatic
operation allows an individual talker's voice to rise above
background noise and reverberation to become clearer and
more intelligible.
Actual Output
(typical) Clipping
Level
60 Ω
+18 dBV
300 Ω
+12 dBV
1 kΩ +18 dBV
1 kΩ +18 dBV
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
0.4 sec (switchable to 1.0 sec)
95A8238
95B8238
95A8389
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no dam-
age. Microphone inputs are not damaged by signals up to 3
V; Line and Monitor inputs by signals up to 20 V
Equalization
Low-frequency
corner from 25 to 320 Hz
High-frequency
10 kHz, shelving
Limiter
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Threshold
(dBm at output)
Attack Time
Recovery Time
Indicator
Input LEDs
Green on channel activation, red at 6 dB below clipping
Phantom Power
46 Vdc open-circuit through 6.8 k
-125 dBV
45 596
-123 dBV Operating Voltage
SCM810: 120 Vac rated nominal (see Voltage Selection for
230 Vac operation), 50/60 Hz, 200 mA
SCM810E: 230 Vac rated nominal (see Voltage Selection for
120 Vac operation), 50/60 Hz, 200 mA
Temperature Range
Operating
Storage . . . . . . . . . . . . . . . . . . . .
Overall Dimensions
44.5 mm H x 483 mm W x 317 mm D (1
ches)
Net Weight
4.3 kg (9 lb 9 oz)
Certifications
SCM810: Listed by Underwriters Laboratories, Inc., listed as
4 msec
Certified by Canadian Standards Association; SCM810E:
Conforms to European Union directives, eligible to bear CE
marking; VDE GS-Certified to EN 60 950; meets European
0.5 sec
Union EMC Immunity Requirements (EN 50 082–1, 1992): RF
radiated (IEC 801–3): meets Criterion A, ESD: meets Criteri-
on B, EFT (IEC 801–4): meets Criterion B
Line (Power) Cord (SCM810E)
Link Cable
Each SCM810 handles up to eight microphone- or line-
level signals and two aux-level signals. Any high quality, low-
impedance, balanced dynamic or condenser microphone (in-
cluding wireless) can be used. Additional SCM810 mixers
(up to 50) can be interconnected using the rear-panel link
jacks. Non-automatic (manual) operation is also available.
2
Specification Sheet
. . . . . . . . . . . . . . . . 6 dB/octave cut, adjustable
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . Switchable: off, +4, +8, +16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . Lights red when limiting occurs
Ω
series resistance per DIN
°
. . . . . . . . . . . . . . . . . . . 0 to 60
°
-30
±6 dB at 5 kHz, ±8 dB at
Peak
2 msec
300 msec
° ° °
C (32 to 140 F )
° ° °
to 70 C (-22 to 158 F)
3 1
/ x 19 x 12 / in-
4 2
95A8247
95A1143