Directed Audio 1200T manual Battery and ground connections to the vehicle should be made with

cable of the vehicle, and if neces- sary, upgrade it by adding an addi- tional ground wire that is the same gauge as the amplifier's power wire. Remember, the amplifier can only deliver its rated output when it is not current limited by the power and ground supply wires.

8.This amplifier is designed to drive a speaker load that measures from 1 to 8 ohms. Keep in mind that heat is the long-term enemy of automo- tive electronics and the lower your speaker load, the more heat is generated. For low impedance speaker applications or restricted ventilation installations, an external cooling fan may be advisable.

9.Battery and ground connections to the vehicle should be made with

crimped ring terminals of the appro- priate size (surface area is what counts); soldering the terminals after crimping is also recommended.

10.Due to the high-frequency MOSFET switching power supply, filtering the power cable is not generally required (remember that the amp can't deliver full output if the power supply is restricted). Proper grounding of the signal source is mandatory for the amplifier to reach its performance peak. If the RCA inputs are not grounded adequately via the signal source, electrical noise from the vehicle may be picked up in the system.

6 © 2004 Directed Electronics, Inc