Shure SCM810 Specification Sheet

SCM810 STEREO MIXER
The Shure Model SCM810 is an automatic microphone
mixer using Shure's patented IntelliMix
cept. Intellimix activates only those microphones being ad-
dressed, minimizing the poor audio caused by multiple open
microphones. The SCM810 is an eight-channel mixer capa-

SYSTEM FEATURES

S
Reliable, quick-acting, noise-free microphone selection
which automatically adjusts to changes in background
room noise
S
User-configurable parameters for automatic operation
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Automatic gain adjustment as additional microphones
are activated (NOMA: Number of Open Microphones At-
tenuator)
S
Last Mic Lock-On circuit maintains ambient sound
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Adjustable EQ per channel: low-frequency rolloff and
high-frequency shelving
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48 V phantom power selectable for each input

SPECIFICATIONS

Measurement Conditions (unless otherwise specified):
Line voltage 120 Vac, 60 Hz (SCM810) or 230 Vac, 50 Hz
(SCM810E); full gain; 1 kHz, one channel activated; source
impedances: Mic 150 Ω, Line 150 Ω; terminations: Line 10
kΩ, Phones 300 Ω (tip-sleeve and ring-sleeve), Direct Out 10
kΩ; Auto mode, equalization controls adjusted for flat re-
sponse
Frequency Response (Ref 1 kHz, channel controls centered)
50 Hz to 20 kHz ±2 dB; -3 dB corner at 25 Hz
Voltage Gain (typical, controls full clockwise)
Input Line
Low-impedance 80 dB
mic (150 Ω)
Line 40 dB
Aux 44 dB
Send/Return 20 dB
E2002, Shure Incorporated
TL1031(BH)

operational con-
Output
Head- Direct Out
phones
88 dB 34 dB
48 dB –6 dB
52 dB —
28 dB —
SCM 810 Automatic Microphone Mixer
ble of being linked for installations as large as 400 input chan-
nels. The single-rack-height chassis is ideal for installations
with limited rack space. The removable header-type input
and output connectors are quick, convenient, and eliminate
the time and expense of wiring XLR microphone connectors.
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Active balanced microphone- and line-level inputs and
line-level output
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Highly RF-resistant chassis and circuitry
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Bi-color LED indication of channel activation and clipping
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Linking capability for systems up to 400 microphones
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Non-automatic aux-level inputs with level control
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Front-panel headphones output with level control
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Peak-responding output limiter with selectable thresh-
olds and LED indicator
S
Internal modification permits 120 V operation (SCM810)
or 230 V operation (SCM810E)
Inputs
Impedance
Designed
Input for use with
19-600 W
Mic
3
Line
2 kW
3
Aux
2 kW
3
Send/Re-
2 kW
turn
Specification Sheet
Actual Input
(typical) Clipping
Level
10 kW -15 dBV
10 kW +22 dBV
10 kW +22 dBV
10 kW +18 dBV