By: Shure
Microphones, Headphones & Wireless systems
Contact us for lowest price (800) 284-2288, (858) 565-1101,, or fax (858) 300-4193
8-Channel Microphone Mixer
The Shure Mixer & DSP Series SCM 810 eight-channel automatic mixer features the Shure patented IntelliMix, which activates only microphones being addressed, minimizing poor audio caused by multiple open microphones.

The SCM-810 is designed specifically for installed sound applications.

Features include adjustable EQ per channel, 48 V phantom power, active balanced microphone - or line-level inputs, line-level outputs, highly RF resistant chassis and circuitry, complete logic control of microphone activation, linking capacity for up to 400 microphones, with an internal power supply. 120/230 Vac power.
Output Hum and Noise (through 20 Hz to 20 kHz filter; channel controls full counterclockwise))
Eight balanced mic-line input channels (Phoenix block connectors)
One unbalanced 1/4" aux level input
Eight unbalanced 1/4" direct line level outputs
One balanced master line level output (Phoenix block connector)
Selectable 48V phantom power per channel
Level selectable peak output limiter
Full rack width (single rack height)
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 ohms, Line 150 ohms terminations= Line 10 kilohms, Phones 300 ohms (tip-sleeve and ring-sleeve), Direct Out 10 kilohms; Auto mode, equalization controls adjusted for flat response
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= Low-impendance (150 O), Line, Aux, Send/Return; Output Line= 80dB, 40dB, 44dB, 20dB; Output headphones= 88dB, 48dB, 52dB, 28db; Output Direct Out= 34dB, -6dB, - -
Inputs (Mic, Line, Aux, Send/Return) Impendance Designed for use with: 19-600 O, 32kO, 32kO, 32kO; Impendance Actual (typical)= 10kO, 10kO, 10kO, 10kO; Input Clipping Level= -15dBV, 22dbV, 22dBV, 18dBV
Outputs (Line, Headphones, Direct Out, Send/Return) Impendance Designed for use with= >600 O, 8-200 O (60 O Recomended), >2kO, >2kO; Impendance Actual (typical)= 60 O, 300 O, 1kO, 1kO; Output Clipping Level= 18dBV, 18dBV, 12dBV, 18dBV, 18dBV
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)
Equivalent Input Noise -125 dBV (150 ohm source; through 400 Hz - 20 kHz filter)
Equivalent Input Hum and Noise -123 dBV (150 ohm source; through 20 Hz - 20 kHz filter)
Hum and Noise Master full counterclockwise= -90 dBV; 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= 4 ms; Hold Time= 0.4 s (switchable to 1.0 s); Decay Time= 0.5 s
Off-Attenuation 15 dB (switchable to infinity)
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
Low-frequency Equalization 6 dB/octave cut, adjustable corner from 25 to 320 Hz
High-frequency Equalization /- 6 dB at 5 kHz, /- 8 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 Green on channel activation, red at 6 dB below clipping
Phantom Power 46 Vdc open-circuit through 6.8 k series resistance per DIN 45 596
SCM810 Operating Voltage 120 Vac rated nominal (see Voltage Selection for 230 Vac operation in User Guide), 50/60 Hz, 200 mA
SCM810E Operating Voltage 230 Vac rated nominal (see Voltage Selection in User Guide for 120 Vac operation), 50/60 Hz, 100 mA
Operating Temperature Range 0 degrees to 60 degrees C (32 degrees to 140 degrees F)
Storage Temperature Range -30 degrees to 70 degrees C (-20 degrees to 165 degrees F)
Overall Dimensions 44.5 mm H x 483 mm W x 317 mm D (13/4 x 19 x 121/2 inches)
Net Weight 4.3 kg (9 lb 9 oz)

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Prices and specifications subject to change without notice.