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By: Shure
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Microphones, Headphones & Wireless systems
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Eight Channel Microphone Mixer
The Shure Mixer & DSP Series SCM 800 is a full-featured, eight-channel microphone mixer for sound reinforcement, general audio recording, and audio-visual systems. Any low-impedance, balanced dynamic or condenser microphone, including a wireless microphone system, can be used with the SCM800 mixer.

Each SCM-800 accepts up to eight microphone- or line–level inputs and one aux-level input (two input jacks feed the same channel). Up to four SCM800 mixers can be linked to provide up to 32 input channels. Each input channel has a two-band equalizer, switchable microphone- or line-level operation, switchable 48 V phantom power, and a 1/4-inch send/receive insert jack.
Net Weight; 4.3 kg (9 lb 9 oz)
Compatible with Shure SCM410, SCM810 and FP410 automatic microphone mixers
48 V phantom power selectable for each input
Active balanced microphone- and line-level inputs and line level output
Highly RF-resistant chassis and circuitry
LED indication of channel clipping
Linking capability for systems up to 32 microphones
Two Aux-level input jacks that feed one channel
Insert jack on each channel
Manual mixing of input channels
Internal Modification permits 230 V operation (SCM800) or 120 V operation (SCM800E)
Front-panel headphones output with level control
Peak-responding output limiter with selectable thresholds and LED indicator
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 ohms, Line 150 ohms; Terminations= Line 10 kilohms, Phones 300 ohms (tip-sleeve and ring-sleeve), Direct Out 10 kilohms. 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 /- 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, -<2kO, -<2kO, -<2kO; 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)
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 8
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= /- 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 Light at 6 dB below clipping
Phantom Power 4 6 Vdc open-circuit through 6.8 kilohm series resistance per DIN 45 596
Operating Voltage SCM800= 120 Vac rated nominal (see Voltage Selection for 230 Vac operation in User Guide), 50/60 Hz, 200 mA; SCM800E= 230 Vac rated nominal (see Voltage Selection for 120 Vac operation in User Guide), 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 (-22 degrees to 158 degrees F)
Overall Dimensions 44.5 mm H x 483 mm W x 317 mm D (13/4 x 19 x 121/2 in.)
Adjustable EQ per channel low-frequency rolloff and high-frequency shelving



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Prices and specifications subject to change without notice.