Harman GTO-3EZ - Manual (Page 5)

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power connection
1. Connect a wire (minimum 6AWG – 13.2mm 2 – for the GTO-5EZ; minimum 8AWG – 8.4mm 2 – for the GTO-3EZ)
directly to the battery’s positive (+) terminal.
2. Install a fuse holder for a 90A fuse (GTO-5EZ) or 70A fuse (GTO-3EZ) on this wire within 18" (46cm) of the
battery’s (+) terminal. Do not install the fuse in the holder at this time.
3. Route this wire to the amplifier’s location and connect it to the amplifier’s +12V terminal. Be sure to use
appropriate grommets whenever routing wires through the firewall or other sheet metal. impOrtant: Failure to
adequately protect the positive wire from potential damage may result in a vehicle fire.
4. When you are finished routing and connecting this wire, install the appropriate fuse in the holder you installed near
the battery. (GTO-5EZ = 90A fuse; GTO-3EZ = 70A fuse.)
speaker cOnnectiOns
Always connect the (+) terminal on the amplifier to the (+) terminal on the speaker and the (–) terminal on the amplifier
to the (–) terminal on the speaker.
Speaker
Connectors
GTO-5EZ GTO-3EZ
Speaker
Connectors
impOrtant: Make sure the (+) and (–) bare wires do not touch each other or the other terminal at both the amplifier
terminals and speaker terminals. Touching wires can cause a short circuit that can damage the amplifier.
nOte: The minimum speaker impedance for stereo operation is 2 ohms. The minimum speaker impedance for bridged
operation is 4 ohms. The minimum subwoofer impedance is 2 ohms.
stereo operation
• Connect the front speakers to the Front L (FL) and Front R (FR) (+) and (–) terminals.
• GTO-5EZ only: Connect the rear speakers, using the RL and RR (+) and (–) terminals.
• Connect the subwoofer to the Sub (+) and (–) terminals.
Front Left Speaker
Rear Left Speaker*
Front Right Speaker
Rear Right Speaker*
*GTO 5EZ only
Subwoofer