Shure SCM810 8-Channel Automatic Microphone Mixer

This eight-channel automatic mixer features Shure's patented IntelliMix , which activates only microphones being addressed, minimizing poor audio caused by multiple open microphones. The SCM810 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. Specifications: Freq Response: 50Hz to 20kHz +/-2dB; -3dB corner at 25Hz. Total Harmonic Distortion: < 0.1% at +18dBV output level, 50Hz to 20kHz. Input Channel Activation: Attack Time 4 msec, Hold Time 0.4 sec (switchable to 1.0 sec), Decay Time 0.5 sec, 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-Freq EQ: 6 dB/octave cut, adjustable corner from 25 to 320 Hz. Hi-Freq EQ: +/-6 dB at 5 kHz, +/-8 dB at 10kHz, shelving. Limiter Type: Peak. Threshold: Switchable; off, +4, +8, +16 (dBm at output). Attack Time: 2 ms. Recovery Time: 300 ms. Phantom Power: 46 Vdc open-circuit through 6.8k ohm series resistance per DIN 45 596. Overall Dimensions (H x W x D): 1 3/4" x 19" x 12 1/2". Net Weight: 9 lbs, 9 oz.