Optimus 120-1971 manual LOW-LEVEL Input, HIGH-LEVEL Input

2 X 50 Watt Truck Amp (120-1971) Connecting Faxback Doc. # 6715

You can connect your stereo system to low-or high-level input. If your stereo system has RCA outputs, connect it to the amp's low-level input for a cleaner, less noisy signal. If your stereo system only has speaker outputs, connect it to the amp's high-level input.

To connect the amplifier to your stereo system, place the amplifier as close as possible to the selected mounting location and follow the appropriate instructions.

LOW-LEVEL INPUT

Your amplifier has gold plated color RCA terminals for low-level input to match radios and equalizers with RCA type, line-level outputs.

NOTE: You need a set of 12-foot RCA cables for dash to trunk mounting. We recommend Radio Shack Cat. No. 43-2356.

Follow these steps to connect the stereo system's RCA jacks to the amplifier's LOW INPUT terminals:

1.Plug the RCA cable into the car stereo system's left and right RCA output jacks and connect the other end to the amplifier's left and right LOW INPUT terminals.

2.Connect the left speaker's positive (+) wire to the amplifier's positive (+) left terminal.

3.Connect the left speaker's negative (-) wire to the amplifier's negative (-) left terminal.

4.Repeat Steps 3 and 4 to connect the right speaker to the amplifier's right speaker terminal.

NOTE: We recommend 16 or 18 gauge speaker wire.

HIGH-LEVEL INPUT

If your car radio does not have RCA output jacks, connect the speaker output from the stereo system to the amplifier following these steps:

1. Connect the stereo system's speaker wires to the amplifier's