User manual CARVIN DCM1500

[. . . ] This symbol is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. LIMITED WARRANTY Your Carvin product is guaranteed against failure for 3 YEARS unless otherwise stated. Carvin will service and supply all parts at no charge to the customer providing the unit is under warranty. Carvin assumes no responsibility for horn drivers or speakers damaged by this unit. This warranty does not cover, and no liability is assumed, for damage due to: natural disasters, accidents, abuse, loss of parts, lack of reasonable care, incorrect use, or failure to follow instructions. [. . . ] Four 10-32 x . 5" phillip machine screws are normally used to secure the amp. XLR CHANNEL INPUTS AND THROUGHS XLR balanced inputs helps to reduce hum and allows for longer cable runs from your signal source (mixer, etc). XLR pin configuration: Pin 1: Grounded through the GROUND LIFT switch, Pin 2: positive Bal. 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. 9. PARALLEL SWITCH The rear PARALLEL switch allows you to drive both channels from either input. This feature is used to "daisy chain" one piece of equipment to another. Just plug into the unused INPUT and it will become an output for other equipment. CHANNEL LEVEL CONTROL A precision input LEVEL attenuator is used to adjust the volume levels. Set the controls at 10 or higher to deliver the amps maximum power without reducing the headroom of the signal source. 10. INPUT GROUND LIFT Many times sound systems are connected in such a manner to cause a grounded loop with the inputs that result in audible hum. The input GND LIFT switch on the rear panel will help eliminate this problem. If not, another way to eliminate ground loops is to install Carvin's MTF55 ground lift adaptor between the amplifier input cable and the signal source which breaks the connection of the ground wire. 4. CHANNEL SIGNAL INDICATOR The green SIGNAL LED indicators will start to flash when there is a signal present at the channel input. 5. 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). The built-in high quality opto isolator limiters are recommended to hold down peaks that could cause early distortion. Limiters will help to rise the average power so that you can get more output from each channel. To check the effectiveness of the limiters when the channel starts to distort (under the amps full output), engage the limiters and hear the reduction of the distortion. WARNING: Do not check in an environment where the sound level could damage your ears! 6. 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 could activate the PROTECT LED. [. . . ] No other connections can be used while in Bridged mode. Ch 1 Input To signal socket XLR or 1/4" 2 or 3 cond. shielded SPEAKER ­ 1 + ­­BRIDGE­­ + ­ SPEAKER 2 CAUTION - TO PREVENT ELECTRICAL SHOCK DO NOT DEFEAT THE SAFETY GROUND ON THE POWER CORD - DO NOT REMOVE COVER . WARNING - TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE TO RAIN OR MOISTURE. REFER SERVICING TO QUALIFED PERSONNEL. Activate the BRIDGE switch (IN). [. . . ]