User manual CARVIN DCM4000

[. . . ] POWER SOURCES: The product should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance. GROUNDING OR POLARIZATION: Precautions should be taken so that the grounding or polarization is not defeated. POWER CORD PROTECTION: Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance. SERVICING: The user should not attempt to service the appliance beyond that described in the operating instructions. [. . . ] Four 10-32 x . 5" phillip machine screws are normally used to secure the amp. The rear support brackets must also be used, which are adjustable from a depth of 13" to 19". POWER SWITCH Check the power amp connections and verify the AC line power source before engaging the POWER switch. The yellow LED unmistakably indicates that all circuits are properly powered up. Yellow is used so the operator can see the red indicators (clipping or protect) from a distance. CHANNEL LEVEL CONTROL Precision input LEVEL attenuators are used to adjust the volume levels. To deliver the amps maximum power without reducing the headroom of the signal source, the level controls should be turned full on. CHANNEL SIGNAL INDICATOR The green SIGNAL LED indicators will start to flash when there is a signal passing to your speakers (-30dBM). CHANNEL CLIP INDICATOR The red CLIP LED indicators will start to flash when each channel has reached its maximum output. However, consistent flashing caused from higher frequencies may damage high frequency drivers (excessive distortion). BRIDGE MODE INDICATOR This yellow LED will indicate when the rear "bridged" switch has been engaged and you're running a pair af channels in the "bridge" mode. POWER INDICATOR/FUSES This Yellow LED will indicate power to each pair of amps. If one pair does not come on, remove the top lid and replace both 25 AMP 250 Volt slow blow MBA fuses located in the center bottom of the amp. FRONT COOLING VENTS/FAN Upon rack installation, the rear of the amp must be fully exposed to room temperature air. The surrounding air should not be warmer than 120° or the thermal protection will engage. The front cooling vents are not to be restricted from exhausting the warm air. PROTECT LED INDICATOR The red PROTECT LED provides the operator with information about the status of the amplifier. The PROTECT LED can come on under 3 different conditions (when this happens both channels are muted) 1) During power-up, the amplifier stays in a muted state for approx. 3 sec until it determines that everything is functioning normally (no output shorts or over temp conditions). 2) When the output load draws excessive current or a direct short is detected in a speaker cable or speaker system, reset this condition by turning the amp off for two seconds and then on again. Check for shorted cables and proper impedance (2 ohms minimum per ch or 4 ohms BRIDGED). 3) Overheating is usually determined when the amp stops in the middle of a performance and the PROTECT LED comes on. [. . . ] Bi amp mode Red (2+) / not used Green (2-) / not used · Solder wires in contacts or use hex screws provided. +POS. 1 2 3 3 GND + SIGNAL (BAL. ) - SIGNAL (BAL. ) Twist-Lok Housing Contact Insert Cable Clamp Securing Hub HELPFUL HINTS 1. No sound from Ch 2 or 4: The rear BRIDGE switch has been inadvertently pushed in. Stereo channels sound the same: The rear PARALLEL switch has been inadvertently pushed in. [. . . ]