DCM 300

Digital Crossover/Monitor

DCM Series crossover/monitors are a powerful solution for today's D-Cinema audio systems for installations that use a separate cinema processor such as QSC USL JSD Series processors. The new DCM builds on the legacy of QSC's DCP and DPM products to provide loudspeaker crossover and monitoring functions for Digital Cinema in a Single integrated system. Designed to be used with QSC's Digital Cinema Amplifiers (DCA) and featuring advanced Intrinsic Correction™ settings for QSC's Digital Cinema Speakers (DCS), the DCM optimizes loudspeaker performance while simplifying cinema sound system wiring and configuration. The DCM 300 is configurable for tri- or quad- amp operation for three screen channels. The DCM 300 accommodates 2 or 4 surround channels (5.1 or 7.1)

When used with QSC DCS Series cinema loudspeakers, QSC's proprietary Intrinsic Correction adjusts for the intrinsic behaviours of loudspeakers, removing any anomalies from the equation factors that affect measured response and, ultimately, the quality of sound. The result is optimal "out of the box" performance while minimizing on-site room tuning.

The DCM 300 greatly simplifies system wiring and set-up, significantly reducing installation time and labor cost. Connections to DCA amplifiers for input and monitor signals are made through QSC DataPort VGA-styles cables. Set-up is accomplished by a front panel USB cable connection, using menu-driven, DPM Manager software for configuration. The program includes a database of QSC Intrinsic Correction settings for QSC cinema speaker models.

In addition to audio monitoring of DCA Series* amplifier inputs and outputs, DCM 300 includes QSC's exclusive "load fault" detection. It monitors amplifiers outputs and indicates any opens an shorts in the loudspeaker, providing confirmation that all ampifier outputs are functioning properly.

*DataPort connection also works with QSC ISA Series amplifiers, but will not provide open/short detection or standby function with ISA Series.


  • Analog inputs accept audio from cinema processors or other 8 channel analog audio sources
  • QSC Intrinsic Correction DSP Settings for optimal performance of QSC cinema speakers
  • Booth monitor with front panel control for easy operation
  • Passive, bi-, tri- or quad-amp
  • Compatible with all existing QSC DCA amplifiers
  • Bypass mode - routes audio around failed components to ensure that the show will go on
  • Control and monitoring via Ethernet including full SNMP support
  • Continued development of software and firmware will add new capabilities via easy updates


DCM 300
Dimensions & Accessories
Dimensions (HxWxD) 3.5"(2 RU) x 19" x 15"
Line voltage requirements 100 VAC – 240 VAC, 50/60 Hz
Accessories included 6 ft UL/CSA line cord, Connector Kit
Front Panel Controls and Indicators
Monitor Volume/parameter adjust Rotary encoder
Setup mode indicator Yellow LED
LCD 128 x 64 bit Monochrome LCD
Power on indicator Green LED
Fault detect indicator Yellow LED
USB Type B port Config and management interface
Monitor output 3.5 mm TRS
Rear Panel Connectors
Network RJ45 10/100 Mbps network management
RS232 DB-9 Serial Interface
Analog Inputs (1-8) DB-25
DataPort connectors HD-15 (DCM100 - 8, DCM300 - 11), QSC amplifier interface
H.I and Monitor output 5 - pin Euro-style (x1) - common GND
Power switch Rocker switch
Monitor Speaker
Speaker 2"x 3.5" full-range
Amplifier output power 10 watts Class D
Audio Performance
A/D conversion 24-bit delta-sigma, 48 kHz
Frequency response 20 Hz to 20 kHz (+- .5dB)
Main Analog Input
Connector DB25F - 8 channel
Input stage type Active balanced input
Input impedance 20k Ohms
Max analog input level +14.2 dBu (4.0 Vrms)
THD+N at 2 dB below clip < .003%
DataPort Outputs (HD15)
Max output level 14 dBu
H.I. and Monitor outputs
Connector 5-pin Euro-style with common GND (LCR sum)
Output stage type Balanced output
Max output level 18 dBu (adjustable)
Monitor Headphone Output
Connector Front Panel 3.5mm mini jack
Output stage type Unbalanced output
Max output level 21 dBu
Network / SNMP
Protocol Standard TCP/IP implementation over Ethernet or Fast Ethernet. 3rd party interface may use UDP/IP or TCP/IP. Also supports connection to DPM Manager and SNMP
Data rate 10/100 Mbps
 Connection requirements Cat-5 UTP cable or better (100m maximum length), direct connection to wired network switch ports only, dedicated LAN or VLAN.