User manual QSC AUDIO DCM 100

[. . . ] The DCM 100 and DCM-3 cover cinema systems ranging from three to five screen channels, and is configurable for bi-amp or tri-amp operation. DCMs are also compatible with all cinema processor formats including Dolby Digital Surround-EX and DTS-ES. [. . . ] DCMs are also compatible with all cinema processor formats including Dolby Digital Surround-EX and DTS-ES. Digital Signal Processing The DCM's digital signal processing capability outperforms traditional analog crossovers for optimized speaker performance. Crossover frequency, parametric equalization, polarity and gain can be precisely adjusted for each speaker in your system. Digital delays, adjustable in 20 µs increments, assure proper acoustical timealignment of loudspeaker drivers for smooth frequency response, especially critical in three-way systems. A passive emergency bypass crossover is also included for fail-safe operation. Less wiring, faster setup DCMs greatly simplify system wiring and set-up, significantly reducing installation time and labor cost. Dimensions (HWD): 5. 25" x 19" x 14" Line Voltage Requirements: 85 VAC - 260 VAC, 50/60 Hz Accessories Included: (1) 6 ft. (2m) UL/CSA line cord (1) User Manual (1) Software Diskette, 3. 5" HD Front Panel Controls Power Switch: (1) Rocker Switch Monitor Mode Select: (1) Momentary Push Button Monitor Channel Select: (6 or 8) Momentary Push Button Monitor Volume: (1) Rotary Potentiometer Test Lead Connections: (2) Test Point Jacks Bypass Mode Select Switch: (1) Slide Switch Diagnostics Button: (1) Momentary Push Button Indicators: Power Indicator: (1) Green LED Monitor Mode Indicators: (1) Green LED and (1) Yellow LED Processor Channel Indicators: (6 or 8) Green LEDs Amplifier Channel Indicators: (13 or 20) Yellow LEDs Load Fault Indicator: (1) Red LED Clip Indicator: (1) Red LED Rear Panel Controls Bypass Crossover Level: (2 or 3) Rotary Trimpots Surround EX Mode Switch: (1) Slide Switch Rear Panel Control Connectors: Input: (1) 25-pin female D-sub connector Amplifier DataPorts: (8, 11 or 15) 15-pin female high-density D-sub connectors RS232 Serial Port: (1) 9-pin female D-sub connector Powered Sub/Hearing: Impaired Output: (1) 6 terminal screw-terminal connector Surround EX Insert Point: (1) 9-pin male D-sub connector AC Power Inlet: (1) IEC style with fuse DCM Inputs Screen Channels and Subwoofer: Input Stage Type: Active Balanced Input Impedance: 20k ohms Maximum Input Level (Screen channels): +14. 2 dBu (4. 0 Vrms) Maximum Input Level (Subwoofer channels): +18. 2 dBu (6. 4 Vrms) A/D Conversion (Screen channels only): 24 bit delta-sigma 128x oversampled Surround Channels: Hardwire pass-through to DataPort outputs (via Surround-EX Insert) Dataport Outputs Screen Channels: Output Attenuation Steps: 0 dB to ­18 dB in 0. 1 dB steps Dynamic Range: 99 dB THD+N 20 Hz-20 kHz, +12 dBu Input Level, All Filters Flat: 0. 02% Frequency Response: 20 Hz ­ 20 kHz (no filtering) D/A Conversion: 24 bit delta-sigma 128x oversampled Filter Topology: 24 bit digital IIR filters Specifications subject to change without notice. Specifications Crossover Filters: Linkwitz-Riley 24 dB/octave digital filters programmable in approx. 1 Hz steps from 150 Hz - 15 kHz Digital bandpass constant Q filter with ±10 dB of boost/cut programmable in approx. Q is programmable in 1/10th octave steps from 1/10 to 2 octaves. Available on high frequency outputs only Available on high frequency outputs only Programmable in 21 µs steps from 0 to 21 ms per output Normal, Inverted Individual mutes on each screen channel output Single ended (balanced impedance) 0 dB to ­18 dB in 3 dB steps 99 dB 0. 02% Digitally controlled analog on DCM 100, DSP on DCM-3 Linkwitz-Riley 12 dB/octave filter. Q can be programmed as 0. 707 or 2, flat or "step-down" operation One mute for all subwoofer outputs Hardwire pass-through from processor input via Surround Insert 2 or 3 selectable on rear panel Parametric EQ: CD Horn EQ: Screen EQ: Delay: Polarity: Mute: Subwoofer: Output Stage Type: Output Attenuation Steps: Dynamic Range: THD+N 20 Hz-20 kHz, +12 dBu Input Level, All Filters Flat: Filter Topology: High Pass Filter: Mute: Surround Channels: Output Channels (using the Surround Insert connector): Amplifier A. C. [. . . ] Q is programmable in 1/10th octave steps from 1/10 to 2 octaves. Available on high frequency outputs only Available on high frequency outputs only Programmable in 21 µs steps from 0 to 21 ms per output Normal, Inverted Individual mutes on each screen channel output Single ended (balanced impedance) 0 dB to ­18 dB in 3 dB steps 99 dB 0. 02% Digitally controlled analog on DCM 100, DSP on DCM-3 Linkwitz-Riley 12 dB/octave filter. [. . . ]