Description of Unit: Rear Panel
[4] Inputs & [5] Outputs
The audio inputs and outputs for the GFA-6002 and GFA-6006 are through high-quality, gold-plated RCA jacks to minimize high-frequency losses, noise, etc. They will accept standard RCA-type plugs, one for each of the channels. To insure that the performance designed into the amplifier is preserved, you should use the highest quality audio cables possible.
The GFA-6002 and 6006 feature inputs and outputs for each channel to allow “daisy-chaining” of channels or additional amplifiers in an installation. To direct signal from one channel to another, connect an appropriate cable (RCA to RCA, male to male) from the output of one channel to the input of the desired channel.
In bridged operation (see Bridged Operation) only the Bridged Mono Input is to be used. On the GFA-6006, bridged mono inputs are channels 1,3, and 5. On the GFA-6002, bridged mono input is channel 1. For “daisy-chaining” the corresponding outputs for these channels are active.
[6] Input Level Adjustment
Each channel has an input level adjustment. The purpose of this adjustment is to balance levels in installations where physical circumstances may create a large difference in volume. Turn the level control to the fully clockwise position for maximum sensitivity; turning the control counter clockwise reduces sensitivity. Use a small blade screwdriver to adjust. In balanced operation only the input adjustments for channels 1, 3, and 5 (GFA-6006) or channel 1 (GFA-6002)
are effective (see BRIDGED OPERATION for more details).
[7] Amplifier Outputs
The GFA-6006/6002’s connections to the loudspeakers are made through high-grade, 5-way, binding post terminals. There are two terminals for each speaker, which are colored RED for the positive (+) output and BLACK for the negative (-) output. The binding posts will accept a variety of connector types; the most secure and prevalent of these is the “U”-type spade connectors (at least 0.25” wide and maximum width of 0.57”). The terminal will also accept bare wire (up to AWG10) and “banana” type plugs (single or dual).
In connecting the amplifier to the loudspeaker, it is vital to maintain proper polarity (positive to positive, negative to negative) in stereo operation. On the GFA-6006/6002, the positive terminal is color coded RED
