The Shure Model SCM800 is a full-featured, eight-channel rack mount 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. The Shure SCM800 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.

Shure SCM800 8-Channel Microphone Mixer Features:

• Compatible with Shure SCM410, SCM810 and FP410 automatic microphone mixers
• Adjustable EQ per channel: low-frequency rolloff and high-frequency shelving
• 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
• Front-panel headphones output with level control
• Peak-responding output limiter with selectable thresholds and LED indicator

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Shure SCM800 8-Channel Microphone Mixer Specifications:

• Frequency Response (Ref .1 kHz, channel controls centered): 50 Hz to 20 kHz +/- 2 dB; -3 dB corner at 25 Hz
• 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 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 (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 kilohm series resistance per DIN 45 596
• Operating Voltage: 120 Vac rated nominal (see Voltage Selection for 230 Vac operation in User Guide), 50/60 Hz, 200 mA
• Temperature Range: Operating: 0 degrees to 60 degrees C (32 degrees to 140 degrees F ); Storage: -30 degrees to 70 degrees C (-22 degrees to 158 degrees F)
• Overall Dimensions(H x W x D): 1-3/4 x 19 x 12-1/2 in (44.5 x 483 x 317 mm)
• Net Weight: 9 lb. 9 oz. (4.3 kg)