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#1
Posted to rec.audio.car
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amp wiring / common ground / mono sub out
I have an Alpine CDA-9812RB, with stereo sub pre-out, and AFAIK no
provision for switching to mono out. I have a bridgeable mono amp for a sub that I'm going to fit in the rear of the car, and fortunately the battery is under the rear seats. I'd like to use the existing rear speaker cables for pre-out signal plus switching. Question is, should I just use one channel of the HU sub out, or can I sum the grounds of the pre-outs and use three of the four speaker cables to carry the stereo sub signal? Is this necessary (LF being primarily mono) & does it carry a risk to the HU? TIA, J. |
#2
Posted to rec.audio.car
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amp wiring / common ground / mono sub out
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#3
Posted to rec.audio.car
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amp wiring / common ground / mono sub out
wrote in message ... I have an Alpine CDA-9812RB, with stereo sub pre-out, and AFAIK no provision for switching to mono out. Your description is kinda of funky. Like Greg S said, stereo sub makes no sense as low frequency sound is non directional. If what you said is indeed the case, use a "Y" connector from the "stereo" sub preout from the Alpine to the mono amp and be done with it. Use this from the HU http://www.amazon.com/Pyle-RCA-Y-Con...8028280&sr=1-2 plus a long RCA mono connector to the amp. I have a bridgeable mono amp for a sub that I'm going to fit in the rear of the car, and fortunately the battery is under the rear seats. I'd like to use the existing rear speaker cables for pre-out signal plus switching. Question is, should I just use one channel of the HU sub out, or can I sum the grounds of the pre-outs and use three of the four speaker cables to carry the stereo sub signal? Is this necessary (LF being primarily mono) & does it carry a risk to the HU? TIA, J. |
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