Loudspeaker connections, Positive/negative connection

GTA 250

Positive/negative connection

We recommend a cable cross-section of not less than 6 mm2. Run a standard commer- cial positive cable to the battery and con- nect to the fuse holder. Use cable grommets when passing cables through holes with sharp edges. Bolt a standard commercial negative cable to a ground point free of in- duced noise (car body bolt, body panel) - not to the negative battery pole. Clean the contact surface of the ground point down to bare metal and coat with antiseize graphite petroleum.

Integral fuses

The integral fuses within the amplifier pro- tect the final stage and the entire electrical system in the event of a fault. Never bridge fuses or replace fuses with a higher current rating.

Example connections

Power supply connection fig. 2.

Connection of car radio with cinch output fig. 3.

Loudspeaker connections fig. 4.

+12V

Connect remote amplifier connec- tion to switchable +12 V power source.

This enables the amplifier to be switched on and off with the radioÕs On/Off switch.

Level control

The Level control enables the input sensi- tivity of the final stage to be matched to the output voltage of your car radio preamp out- put.

The range of adjustment extends from 0.1 V to 8 V.

Adjust the input sensitivity in accordance with the manufacturerÕs specifications when con- necting the amplifier to other radios.

Important:

Turning the Level control clockwise increas- es the input sensitivity of the amplifier, and thereby also the volume. The Level control is however not a volume control; an increase in volume is not achieved in the maximum position, even if this subjectively appears to be the case. The system merely increases the volume more quickly when the volume is turned up on the radio.