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Digital Cinema Monitor

DCM-1 | DCM-3


DCM-1 & DCM-3 are no longer in production.

For equivalent replacements, please see DCM 10 or DCM 30.
QSC will continue to support and service these products.

QSC's Digital Cinema Monitors provide signal processing and monitor functions in a single integrated system. Designed to be used with QSC's Digital Cinema Amplifiers (DCA), the DCMs optimize loudspeaker performance while simplifying cinema sound system wiring and configuration. The DCM-1 and DCM-3 cover cinema systems ranging from three to five screen channels, and is configured for bi-amp or tri-amp operation. 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 microsecond increments, assure proper acoustical time-alignment 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. Input to the DCM is provided via a standard DB-25 cable from the cinema processor. Connections to DCA amplifiers for input and monitor signals are made through a single QSC DataPort VGA-style cable. All traditional XLR and barrier strip terminations are eliminated.

DCMs also simplify set-up by using a menu-driven, PC-based software program for configuration. The program includes a speaker data file that lists default parameters for popular cinema speaker models. Commonly used configurations can also be saved on a disk, allowing you to quickly load them on other DCMs.

Advanced Monitor Functions
In addition to audio monitoring of amplifier inputs and outputs, DCMs include QSC's exclusive "Load Fault" detection. DCMs monitor all amplifier outputs and indicate opens and shorts in the speaker system and wiring via LED "load fault" indicators, providing confirmation that all amp outputs are functioning properly.


FEATURES
  • 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 tri-amp solutions
  • Compatible with all current sound formats; 3-5 screen channels, 5.1 - 7.1
  • 3 year warranty plus optional 3 year extended service contract.

Digital Cinema Monitor


DOCUMENTS

DCM-1 & DCM-3 Specifications (PDF 138K)
DCM Users Manual (PDF 1.5MB)

HI-RES IMAGES

Front
Rear
DCM

SOFTWARE

DCM Manager 2.5

RELATED PRODUCTS

DCA Series 2-Channel Amplifiers
DCA Series 4-Channel Amplifiers
DCS Series Digital Cinema Speakers |
DCM 10/30 Digital Cinema Monitors


Application Chart

Format DCM-1 DCM-3
6 Ch Bi-Amp
 Yes Yes
6 Ch Tri-Amp
No
Yes
8 Ch Bi-Amp
No
Yes
8 Ch Tri-Amp
No
Yes
Surround-Ex
 Yes Yes

 
DCM SPECIFICATIONS
Dimensions 19" W X 5.25" H X 14" D
Line Voltage Requirements 85 VAC - 260 VAC, 50/60 Hz
Acessories 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 buttons
Monitor Volume (1) rotary potentiometer
Test Lead Connections (2) test point jacks
Bypass Mode Select Switch (1) slide switch
Diagnostics Button (1) momentary pushbutton
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 Ch.) +14.2 dBu (4.0 Vrms)
Maximum Input Level (Subwoofer Ch.) +18.2 dBu (6.4 Vrms)
A/D Conversion (Screen Ch. Only) 24 bit delta-sigma 128x oversampled
Surround Channels Hardwire pass-thru 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
Crossover Filters Linkwitz-Riley 24 dB/octave digital filters programmable in approx. 1 Hz steps from 150 Hz to 15 kHz
Parametric EQ Digital bandpass constant Q filter with ±10 dB of boost/cut programmable in approx. 1/10th octave steps from 80 Hz to 15 kHz. Q is programmable in 1/10th octave steps from 1/10 to 2 octaves.
CD Horn EQ Available on high frequency outputs only
Screen EQ Available on high frequency outputs only
Delay Programmable in 21 μs steps from 0 to 21 ms per output
Polarity Normal, Inverted
Mute Individual mutes on each screen channel output
Dataport Outputs - Subwoofer
Output Stage Type Single ended (balanced impedance)
Output Attenuation Steps 0 dB to-18 dB in 3 dB steps
Dynamic Range 99 dB
THD+N 20 Hz-20 kHz +12 dBu
Input Level, All Filters Flat 0.02%
Filter Topology digitally controlled analog on DCM-1, DSP on DCM-3
High Pass Filter Linkwitz-Riley 12 dB/octave filter. Q can be programmed as 0.707 or 2, flat or "step-down" operation.
Mute One mute for all subwoofer outputs
Surround Channels
  Hardwire pass-through from processor input via Surround Insert
Output Channels (using the Surround Insert connector) 2 or 3 selectable on rear panel
Amplifier A.C. Control
  All amps power on with DCM activation
Emergency Bypass Crossover
Filter Type 1st order Butterworth, 2 or 3 way
Attenuation Range (trimpot) -6 dB to -24 dB
Powered Subwoofer Output
Output Stage Type Single ended (balanced impedance)
Output Impedance 50 ohms
Maximum Output Level +14.2 dBu (4.0 Vrms)
Loading Requirements (total of remote & dataport connection) RMIN = 2k ohms CMAX = 4 nF
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
Surround Insert I/O
Output Stage Type Hardwired connection to processor input connector
Input Stage Type Hardwired connection to DataPort output connector
Monitor Speaker
Dimensions 4-inch full range driver
Amplifier Output Power 10 watt class AB amplifier
Frequency Response 100 Hz-8 kHz (±2 dB)
Dynamic Processing 1.5:1 compression

Specifications subject to change without notice.

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