Automatic Microphone Mixers
SCM410 | SCM810

Microphone Mixers and Circuitry
FP33 | P4M | SCM262 | SCM268 | SCM800

Features of the Shure SCM410:
• Fast, noise-free microphone selection, which automatically adjusts to changes in background noise • Automatic gain adjustment as additional microphones are activated-NOMA (Number of Open Microphones Attenuated) • Last Mic Lock-On circuit maintains ambient sound • Fits in half a rack space • Adjustable EQ for each channel • Active balanced microphone-level XLR inputs and an active balanced Mic/Line level XLR output • Unbalanced auxiliary-level phono output • Bi-color channel activation and clipping LEDs • Peak-responding output limiter with LED indicator • Peak-responding output level meter

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Features of the Shure SCM810:
• Reliable, quick-acting, noise-free microphone selection which automatically adjusts to changes in background room noise • User-configurable parameters for automatic operation • Automatic gain adjustment as additional microphones are activated (NOMA: Number of Open Microphones Attenuator) • Last Mic Lock-On circuit maintains ambient sound • 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 • Bi-color LED indication of channel activation and clipping • Linking capability for systems up to 400 microphones • Non-automatic aux-level inputs with level control • Front-panel headphones output with level control • Peak-responding output limiter with selectable thresh olds and LED indicator • Internal modification permits 120 V operation (SCM810) or 230 V operation (SCM810E)

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Features of the Shure FP33:
• Exceptionally quiet design, suitable for use with DAT and other digital formats • Extended frequency response of 20 Hz–20 kHz • Dynamic range greater than 100 dB •Transformer balanced inputs and outputs for superior rejection of RFI and electromagnetic hum • Three selectable mic/line inputs • Two selectable mic/line outputs • Wide range input gain controls handle hot signal levels without attenuators • 48 V phantom, 12 V phantom, and 12 V T (A-B) micro-phone power • Pop-up pan pots • Link switch gangs inputs 2 and 3 to control a stereo microphone • Switchable low-cut filters on each input • Bi-color LED signal presence and peak indicator for each input • Professional VU meters with selectable timed or toggled backlighting • Dual clutched Master gain control for simultaneous or separate adjustment of output levels • 1/4 in. and 3.5 mm jacks for stereo headphone outputs. • Operates for 8 hours on two 9 V alkaline batteries

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Features of the Shure P4M:
• 1/2 rack • Four level controls • Four balance controls • Four XLR - 1/4" mic/line inputs • Two 1/4" TRS aux inputs • Four split controls • Two XLR = 1/4" TRS mix outputs • External power supply

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Features of the Shure SCM262:
• Defeatable "ducking" • "Jukebox mute" • One active balanced XLR mic input channel • One active balanced XLR mic and 1/4 inch TRS line input channel • Three stereo input channels (Six phono connectors) • One unbalanced stereo output (Two phono connectors) • One balanced stereo mic/line output (Two 1/4 inch TRS connectors) • 12V phantom power for condenser microphones • All in a half-rack chassis

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Features of the Shure SCM268:
• Four transformer-balanced microphone inputs • Transformer-balanced output—switchable mic/line level • Five –10 dB line-level inputs • Six-segment LED output level meter •Built-in 12-volt phantom power • Internal power transformer • Built-in low-cut filter on microphone inputs (below 80 Hz)

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Features of the Shure SCM800:
• Compatible with Shure 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 (SCM800) or 120 V operation (SCM800E) • Front-panel headphones output with level control • Peak-responding output limiter with selectable thresholds and LED indicator

 
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