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. Shipping costs are the responsibility of the customer. CARVIN DOES NOT PAY FOR PARTS OR SERVICING OTHER THAN OUR OWN. [. . . ] 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. All signals entering any input will be available on both channels. 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. Occasional flashing caused by lower bass frequencies is OK. However, consistent flashing caused from higher frequencies may damage high frequency drivers (excessive distortion). This does not cause damage to the amp. 11. LIMITERS To activate the LIMITERS, engage the rear limiter switch. 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. If the distortion stops, you can turn the channel up for more power. [. . . ] REFER SERVICING TO QUALIFED PERSONNEL. Activate the BRIDGE switch (IN). Control the level by Ch 1 (Ch 2 does not function. ) CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 120V~60Hz Slow Blow FUSE 8AG 700VA PROFESSIONAL STEREO POWER AMPLIFIER SERIAL NUMBER 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. GND LIFT PARALLEL BRIDGE CH1 IN LIMITERS 120V~60Hz Slow Blow FUSE 8AG 700VA PROFESSIONAL STEREO POWER AMPLIFIER SERIAL NUMBER GND LIFT XLR PIN 1 GND PIN 2 POS PIN 3 NEG PARALLEL BRIDGE CH1 IN LIMITERS Ch 2 Right Input XLR PIN 1 GND PIN 2 POS PIN 3 NEG PARALLEL switch OFF (OUT). [. . . ]