DCM 30D

Digital Cinema Monitor


Features

  • Real-time software control via USB
  • Bi-amp, tri-amp and quad-amp configuration
  • Analog inputs or AES/EBU
  • User defined auxiliary outputs
  • Provides Monitor and Crossover functions in one box
  • Digital Signal Processing for state-of-the-art sound quality (high dynamic range)
  • Fast system setup time (especially in megaplexes with similar rooms)
  • Simple connections with QSC DataPort connectivity. Only one cable per amplifier needed (contains two signal inputs, two signal returns, power on/standby control and two channels of load monitoring)
  • Exclusive "Load Fault" detection indicates speaker system or wiring faults
  • Simple crossover adjustments via PC with password control for tamper proof system adjustments
  • Lower system cost than existing quad-amp solutions
  • Compatible with all current sound formats; 3 to 5 screen channels, 5.1 - 7.1
  • 3 year warranty plus optional 3 year extended service contract
SPECIFICATIONS
Dimensions (HWD) 19 x 5.25 x 15
Line Voltage Requirements 100 VAC - 240 VAC, 50/60 Hz
Acessories Included (1) 6 ft. (2m) UL/CSA line cord
(1) user manual
(1) software CD
Front Panel Controls
Power Switch (1) rocker switch
Monitor Mode Select (1) momentary push button
Monitor Channel Select (9 or 11) momentary push buttons
Monitor Volume (1) rotary potentiometer
Test Lead Connections (2) test point jacks
Bypass Mode Select Switch (1) slide switch
Indicators
Power Indicator (1) green LED
Monitor Mode Indicators (1) green LED and (1) yellow LED
Processor Channel Indicators (9 or 11) green LEDs
Amplifier Channel Indicators (9 or 11) yellow LEDs
Load Fault Indicator (1) red LED
Clip Indicator (1) red LED
Bypass Mode Indicator (1) flashing red LED
Alt EQ Mode Indicator (1) yellow LED
Rear Panel Controls
Bypass Crossover Level (2 or 3) rotary trimpots
Bypass Crossover Type (1) slide switch
Analog/Digital Input Select (1) slide switch
Rear panel control connectors
Main Analog Input (1) 25 pin female D-sub connector
Surround EX Input (1) 25 pin female D-sub connector
Digital Input (1) 25 pin female D-sub connector
Amplifier DataPorts (10 or 19) 15-pin female high-density D-sub connectors
Control Port (1) USB series-B receptacle
Hearing Impaired Line Output (1) 3 position screw-terminal connector
Powered Sub Line Output (1) 3 position screw-terminal connector
External Monitor Speaker Output (1) 2 position screw-terminal connector
Aux Line Level Input (1) 3 position screw-terminal connector
Alt EQ Contact Closure Input (1) 2 position screw-terminal connector
AC Power Inlet (1) IEC style
DCM Inputs
Input Stage Type Active balanced
Input Impedance 20k ohms
Maximum Analog Input Level +14.2 dBu (4.0 Vrms)
A/D Conversion 24 bit delta-sigma 128x oversampled
Dataport Outputs - Screen Channels
Output Level Range +6 dB to -18 dB in 0.1 dB steps
Dynamic Range > 103 dB
THD+N, AES-17, 20 Hz-20 kHz, +12 dBu input level, all filters set flat < 0.013% (Analog inputs)
< 0.008% (Digital inputs)
Frequency Response 20 Hz-20 kHz (no filtering)
D/A Conversion 24 bit delta-sigma 128x oversampled
Filter Topology 24 bit digital IIR filters
Crossover Filters Linkwitz-Riley 24 dB/octave digital filters programmable from 20 Hz to 20 kHz
Parametric EQ
(3 per channel + 3 per band)
Digital bandpass with ±10 dB of boost/cut programmable from 20 Hz to 20 kHz. Q is programmable in 1/10th octave steps from 1/10 to 2 octaves
CD Horn EQ Digital shelf filter with up to 6 dB of boost programmable from 1 kHz to 20 kHz. Available on high frequency band only
Screen EQ Digital shelf with up to 6 dB of boost programmable from 1 kHz to 20 kHz
Subsonic (highpass) Filter Digital high pass filter programmable from 15 Hz to 50 Hz Q can be programmed as 0.707 (flat) or 2 (B6 boost)
Allpass Filter 2nd order allpass filter programmable from 20 Hz to 2000 Hz (dual low band output only)
Band Delay Programmable in 21 μs steps from 0 to 10 ms per band
Channel Delay Programmable in 1 ms steps from 0 to 20 ms
Polarity Normal, Inverted
Mute Individual mutes on each channel and band output
Dataport Outputs - Surround and Subwoofer
Output Level Range +6 dB to -18 dB in 0.1 dB steps
Dynamic Range > 103 dB
THD+N, AES-17, 20 Hz-20 kHz, +12 dBu input level, all filters set flat < 0.013% (Analog inputs)
< 0.008% (Digital inputs)
Frequency Response 20 Hz-20 kHz (no filtering)
D/A Conversion 24 bit delta-sigma 128x oversampled
Filter Topology 24 bit digital IIR filters
Parametric EQ
(2 per channel)
Digital bandpass with ±10 dB of boost/cut programmable from 20 Hz to 20 kHz. Q is programmable in 1/10th octave steps from 1/10 to 2 octaves
Subsonic (highpass) Filter Digital high pass filter programmable from 15 Hz to 50 Hz Q can be programmed as 0.707 (flat) or 2 (B6 boost)
Channel Delay Programmable from 0 to 150 ms per output (surrounds only)
Mute One mute for all subwoofer outputs, one per surround channel
Bass Management Weighted sum of screen channels may be low pass filtered and mixed with sub output
Dataport Outputs - Aux
Output Level Range +6 dB to -18 dB in 0.1 dB steps
Dynamic Range > 103 dB
THD+N, AES-17, 20 Hz-20 kHz, +12 dBu input level, all filters set flat < 0.013% (Analog inputs)
< 0.008% (Digital inputs)
Frequency Response 20 Hz-20 kHz (no filtering)
D/A Conversion 24 bit delta-sigma 128x oversampled
Filter Topology 24 bit digital IIR filters
Crossover Filters Linkwitz-Riley 24 dB/octave digital filters programmablefrom 20 Hz to 20 kHz
Parametric EQ
(3 per channel + 3 per band)
Digital bandpass with ±10 dB of boost/cut programmable from 20 Hz to 20 kHz. Q is programmable in 1/10th octave steps from 1/10 to 2 octaves
Subsonic (highpass) Filter Digital high pass filter programmable from 15 Hz to 50 Hz Q can be programmed as 0.707 (flat) or 2 (B6 boost)
CD Horn EQ Digital shelf filter with up to 6 dB of boost programmable from 1 kHz to 20 kHz. Available on high frequency band only
Screen EQ Digital shelf with up to 6 dB of boost programmable from 1 kHz to 20 kHz
Channel Delay Programmable from 0 to 20 ms per output
Band Delay Programmable in 21 μs steps from 0 to 10 ms per output
Mute Individual mutes on each channel output
Surround Bass Management Weighted sum of surround channels may be low pass filtered and mixed with aux output
Amplifier AC Control
  All amps power on with DCM activation
Emergency Bypass Crossover
Filter Type 2nd order active Butterworth, 2 or 3 way
Attenuation Range (trimpot) 0 dB to -20 dB
Crossover Frequency 1000 Hz (2-way), 500 Hz & 1500 Hz (3-way)
Powered Subwoofer Output
Output Stage Type Single ended (balanced impedance)
Output Impedance 50 ohms
Maximum Output Level +14.8 dBu (6Vp = 4.25 Vrms)
Loading Requirements (total of remote & dataport connection) RMIN = 2k ohms CMAX = 4 nF
Monitor Speaker Output
Amplifier Output Power 15 watt Class D amplifier
Frequency Response 20 Hz-20 kHz (±2 dB)
Dynamic Processing 1.5:1 Compression
Aux Input
Input Stage Type Active Balanced
Input Impedance 20k ohms
Maximum Input Leve +14.2 dBu (4.0 Vrms)
Hearing Impaired Output
Output Stage Type Single ended (balanced impedance)
Output Impedance 50 ohms
Nominal output Level -11.8 dBu (200 mVrms)
Loading Requirements RMIN = 2k ohms CMAX = 4 nF
Contact Closure Input
Input Type TTL Compatible or Dry Contact Closure
Operating Mode Connection to ground through a maximum impedance of 1.3k ohms selects alt EQ settings
Internal Monitor Speaker
Dimensions 4-inch full range driver