Audiovox AMP-604 - Manual (Page 7)

4. Speaker Connections
Wire the speakers to the "Speaker Output" terminals as per the Output Wiring Diagram (remove 1/4" of insulation
from the end of each wire, depress the spring tab on the connector, insert the wire and release the spring tab). For
most applications, #18 gauge wire should be used for the speaker leads but in no case thinner than #20 gauge. When
wiring the speakers, pay careful attention to the polarity of the terminals on the speakers and make certain they
correspond to the polarity of the corresponding terminals on the amplifier. DO NOT ground any speaker leads to the
chassis of the vehicle.
5. Input Connections
This amplifier features both high and low-level input capability. Use either the low-level or high-level inputs, not both.
If low-level outputs are provided from the car stereo, it is recommended that the low-level inputs be used for lowest
distortion and best performance. Use good quality shielded audio cables with RCA plugs at both ends to connect the
stereo to the amplifier and keep the cable lengths to a minimum to avoid noise.
If the car stereo does not provide low-level outputs, the amplifier may be connected via the speaker (high-level) outputs
from the stereo. Wire the positive (+) speaker leads from the car stereo to the 5-pin adaptor harness as shown in the
diagram (shielded cable is not required for this application) and plug the connector into the mating High-Level Input
socket on the amplifier. Carefully splice and insulate all wire connections.
CAUTION: Use either the low-level or the high-level inputs on the amplifier.
DO NOT use both input levels at the same time.
WIRING INSTRUCTIONS
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