User manual QSC AUDIO DCM 30 DIGITAL CINEMA MONITOR

[. . . ] DCM Series Digital Cinema Monitor & Crossover System User Manual DCM 10 DCM 10D DCM 30 DCM 30D *TD-000265-00* TD-000265-00-A Important Safety Instructions & Explanation of symbols 1- Read these instructions. 5- Do not use this apparatus near water. 7- Do not block any ventilation openings. Install in accordance with QSC Audio Product's instructions. [. . . ] If using an external monitor loudspeaker, remover the jumper between the EXTERNAL SPKR + and IN SPR terminals. Removing this jumper disables the internal monitor loudspeaker. Any external loudspeaker used must have a minimum impedance of 4 ohms. The DCM's internal monitor amplifier has a maximum output of 15 watts. IN SPR: This terminal is connected to the EXTERNAL SPKR + terminal if using only the DCM's internal monitor loudspeaker. If using an external monitor loudspeaker, remove the jumper that connects the IN SPR terminal to the EXTERNAL SPKR + terminal. SUB OUT provides the identical audio as the subwoofer DataPort. This connection cannot be monitored or include any of the Fault Analysis functions because there are no signal return connections. ALT EQ SELECT is a contact closure input used to activate an alternate equalization which has been created using the DCM Manager sofware. A switch or set of relay contacts may be used to activate/deactivate the alternate equalization settings. When the contacts are closed, the front panel ALT EQ indicator illuminates. AUX INPUT is a single mono audio input that can be used to supply an additional channel for a ceiling speaker or other application. The aux channel can be processed as a 1-way channel and output to both channels of DataPort O or processed as a 2-way output , with low band and high band going to channels 1 and 2 of DataPort O, respectively. If the Aux INPUT is not being used, DataPort O can be assigned as an additional Left Surround/ Right Surround Output, Back Left Surround/Back Right Surround Output, or as a bass-managed mix of all surround channels (duplicated to both DataPort O channels). HEAR IMP OUT is a single mono audio output which contains a mix of the left, center, and right signals with the center signal boosted 6 dB. This is usually connected to a special cinema system which supplies headphone audio feeds for people with hearing difficulties. This can also be used as an input signal to a powered loudspeaker for remote monitoring of basic L/C/R signals in larger projection booths. IEC Inlet: The power receptacle accepts a standard IEC power cable. The DCM uses a switching power supply that accepts 100 to 240 volts AC, 47-440 Hz. Mounting Rack Mounting When rack mounting the DCM, secure the DCM to the rack rails using four machine screws and washers of the proper size. Most US rack equipment accepts #10-32 machines screws; length used depends upon application. The DCM will require 3-RU (rack units) of space. To rack mount your DCM: 1- select mounting location 2- have an assistant support the DCM in its mounting location 3- secure the two bottom screws first; do not fully tighten yet 4- secure the top two screws, do not fully tighten yet 5- "fine tune" the DCM up, down, right, or left as required and tighten the four mounting screws Supporting the Rear of the DCM When shipping completed sound racks, it is extremely important to support the rear of the DCM. [. . . ] · Verify connections from the DCM to the center channel amplifier. · Verify the Cinema Processor and center channel amplifier are ON and functioning. · Verify the center channel amplifier's Gain controls are set to a usable level. · Verify center channel amplifier loudspeaker connections and loudspeaker condition. [. . . ]