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Channel “A” is the “LEFT” and channel “B” is the “RIGHT”. The inputs on the left side are the (+)positive inputs and the inputs on the right side are the (-) negative inputs. If you wish to run these amplifiers in the Balanced mode, it is strongly suggested that an authorized ADCOM Car Audio dealer handle this installation! There are two ways to run RCAs into these amplifiers. For stereo operation. RCAs connect to the left-most input jacks, labeled A+ and B+. When using the amplifier in either a bridged Mono or MoSt™ configuration, the upper left and lower right inputs, labeled A+ and B-, are used. Always insert the included RCA Shorting Plugs into unused RCA inputs! WIRING DIAGRAMS: There are 3 basic wiring schemes for the GFA-4302 and GFA-4402; they are as follows: 1. Stereo 2. Mono 3. MoSt™ (Mono/Stereo simultaneously) In the Storeo mode, the RCA interconnect cables connect to the Amplifier as follows: The left cable to A+ input and the right cable to B+ input. Speakers hook up normally: "A+” and “A-” outputs to LEFT speaker(s) (+)pos & (-)neg, and “B+" and “B-" outputs to the RIGHT speaker(s) (+)pos & (-)neg. See Fig.2. Remember to insert the RCA Shorting Plugs in the unused inputs. BE CERTAIN OF POWER/GROUND CONNECTIONS Fig.2 In the Mono mode, the LEFT RCA cable connects to A+ input, the RIGHT RCA cable connects to B- input. Remember to insert the RCA Shorting Plugs in the unused inputs. The speaker outputs connect to the speaker as follows: A+ output connects to the Positive(+) speaker terminal; B+ output connects to the Negative(-) speaker terminal (see Fig. 3). ADCOM car audio amplifiers are stable driving a 1 Ohm mono load, but it is not recommended. For best results (maximum SPL and low THD), we suggest a 2 or 4 Ohm mono load. BE CERTAIN OF POWER/GROUND CONNECTIONS In the MoSt™ configuration, the amplifier is capable of driving multiple pairs of stereo speakers (properly crossed-over), and multiple mono subwoofers, simultaneously! To wire the MoSt™ configuration, connect the LEFT RCA to the A+ input; connect the RIGHT RCA to the B- input Remember to Insert the RCA Shorting Plugs in the unused inputs. Wire speakers as shown in Fig. 4. BE CERTAIN OF POWER/GROUND CONNECTIONS Fig. 4 SECTION 3: XLR Input Amps For consistency, we suggest you use channels A and B (left most 5-pin XLR) for Front Left and Right, and use channels C and D (right most 5-pin XLR) for Rear Left and Right. The GFA-4304, GFA-4404 and the GFA-4702 all use balanced inputs terminated with professional 5-pin XLR connectors. Each 5-pin XLR connects two channels (Left and Right) of signal, plus a shield to the amplifier. Hookup is straight-forward, but you must select the correct GFY adapter. The following diagrams (Fig. 5), are a listing of all the adapters available through ADCOM for integrating any system with ADCOM car audio amplifiers and interfaces. It is vital to note the APPLICATION description! Specific adapters MUST be used for specific applications! >GFY ADAPTER CABLES« Fig. 5 (part 1) >GFY ADAPTER CABLES< continued APPLICATION: Adapt XLB(2 ch.) input to accept stereo RCA-tvpe input and run in MONO or MoSt™ configuration. "Right channel is inverted. APPLICATION: Adapts XLR(2ch.) input to RCA-type source to run in STEREO -^ —-1 I APPLICATION ¡Converts a 4-channel ADCOM amo 1 to a Bridaed 2-channel amo (via GFX-2.5 or 20) tp>-—*' GFY-5I Fig. 5 (part 2) WIRING DIAGRAMS: There are 9 wiring diagrams displayed on the following pages. Six are basic single-amplifier wiring...

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