GTO-804EZ - JBL Car Audio Service Manual (repair manual). Page 5

• Connect the left and right speakers to the FL and FR (+) and (–) terminals

• Connect the subwoofer to the RL (+) and RR (–) terminals. (The rear-channel Bass Boost control makes the rear 

channels preferable for subwoofer connection. See Bass Boost, on page 10.)

NOTE: You can also run both pairs of left and right channels bridged for a high-power two-channel system.

See Connecting the Inputs, on page 7, for information about connecting the inputs for bridged operation.

The GTO-804EZ and GTO-504EZ amplifiers have multiple input connectors with a routing switch that increases 
flexibility, so you can use these amps in a variety of audio system configurations.

The GTO amplifier routing switch lets you determine which input connectors drive the amplifier’s various speaker 
outputs:

• F: The front and rear speaker outputs are both fed by the Front Input connectors.

• F&R: The front speaker outputs are fed by the Front Input connectors; the rear speaker outputs are fed by the 

Rear Input connectors.

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