Connecting the units Other than subwoofer Speaker channel Four-channel output Two-channel output Three-channel Speaker output A Three-channel Speaker output B Power Max. input: Min. 200 W (GM-D8704) Min. 260 W (GM-D9704) Max. input: Min. 600 W (GM-D8704) Min. 800 W (GM-D9704) Max. input: Min. 200 W (GM-D8704) Min. 260 W (GM-D9704) Max. input: Min. 600 W (GM-D8704) Min. 800 W (GM-D9704) Connecting the speakers The speaker output mode can be four-channel, three-channel (stereo and mono) or two-channel (stereo or mono). Connect the speaker leads based on the mode and the figures shown below. Four-channel output 4 Speaker output B Two-channel output (Stereo) 1 2 1 Speaker output (Right) 2 Speaker output (Left) Two-channel output (Mono) 1 1 1 4 2 1 Speaker output (Mono) 1 Left 2 Right 3 Speaker output A 2 3 1 En Connecting the units Three-channel output 1 3 2 4 1 Left 2 Right 3 Speaker output A 4 Speaker output B (Mono) Connections when using the RCA input jack Connect the car stereo RCA output jack and the RCA input jack of the amplifier. ! The RCA output jack of this unit outputs the signal that comes from The RCA input jack A. Four-channel / Three-channel output ! Slide INPUT SELECT (input select) switch to 4CH position. 5 1 2 3 4 1 RCA input jack A 2 RCA input jack B 3 Connecting wires with RCA plugs (sold sepa- rately) 4 From car stereo (RCA output) If only one input plug is used, e.g. when the car stereo has only one output (RCA output), connect the plug to RCA input jack A rather than B. 5 INPUT SELECT (input select) switch (4CH position) Two-channel output (Stereo) / (Mono) ! Slide INPUT SELECT (input select) switch to 2CH position. En Connecting the units 4 1 2 3 1 RCA input jack A For two-channel output, connect the RCA plugs to the RCA input jack A. 2 Connecting wire with RCA pin plugs (sold separately) 3 From car stereo (RCA output) 4 INPUT SELECT (input select) switch (2CH position) Notes ! If speaker input wires from a headunit are connected to this amplifier, the amplifier will automatically turn on when the headunit is turned on. When the headunit is turned off, the amplifier turns off automatically. This function may not work with some headunits. In such cases, please use a system remote control wire (sold separately). If multiple amplifiers are to be connected together synchronously, connect the head unit and all amplifiers via the system remote control wire. ! Connect the system remote control wire when you wish to only turn on the car stereo, not the amplifier. ! This amplifier automatically selects an input signal mode between the RCA level and the speaker level by detecting an input signal. Connections when using the speaker input wire Connect the car stereo speaker output wires to the amplifier using the supplied speaker input wire with RCA pin cord. 1 Car Stereo 2 Speaker output 3 Red: Right + 4 Black: Right * 5 Black: Left * 6 White: Left + 7 Speaker input wire with RCA pin cord To the RCA input jack of this unit En Connecting the units Solderless terminal connections ! Since the wire will become loose over time, it must be periodically inspected and tightened as necessary. ! Do not solder or bind the ends of the twisted wires. ! Fasten while making sure to not to clamp the insulating sheath of the wire. ! Use the supplied hexagonal wrench to tighten and loosen the terminal screw of the amplifier and use it to securely fasten the wire. Be careful to avoid excessive tightening of this screw, which may damage the wire. Connecting the power terminal WARNING If the battery wire is not securely fixed to the terminal using the terminal screws, there is a risk of overheating, malfunction and injury, including minor burns. ! Always use the recommended battery and ground wire, which is sold separately. Con- nect the battery wire directly to the car battery positive (+) terminal and the ground wire to the car body. ! Recommended wires size (AWG: American Wire Gauge) is as follows. The battery wire, the ground wire and the optional direct ground wire must be same size. ! Use a wire of 8 AWG to 16 AWG wire for the speaker wire. Battery wire and ground wire size GM-D8704 Wire length less than 4.5 m less than 7.2 m less than 11.4 m Wire size 8 AWG 6 AWG 4 AWG GM-D9704 Wire length less than 2.2 m less than 3.6 m less than 6.4 m Wire size 8 AWG 6 AWG 4 AWG 1 Route battery wire from engine compartment to the vehicle interior. ! When drilling a cable pass-hole into the vehicle body and routing a battery wire thorough it, take care not to short-circuit the wire damaging it by the cut edges or burrs of the hole. After completing all other amplifier connections, finally connect the battery wire terminal of the amplifier to the positive + battery terminal. 2 1 3 1 Positive + terminal 2 Battery wire (sold separately) The maximum length of the wire between the fuse and the positive + terminal of the battery is 30 cm. 3 Fuse 80 A (GM-D8704) / 100 A (GM-D9704) (sold separately) Each amplifier must be separately fused at 80 A (GM-D8704) / 100 A (GM-D9704). En
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