Question about Kenwood KAC-8403 Car Audio Amplifier

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No Sound I haven't been able to get this to work. I've tried it straight and bridged it powers up but does nothing going to my subs (2x)(TS-W307D4 12 SUBWOOFER 1200W) any suggestions?

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  • devon296 Oct 10, 2007

    Thanks I got it to work I just hooked it up straight vice Bridged. Thanks for your assistance

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Well, first thing you need to check is to see if the amplifier is going into protect mode(red light coomes on). also go through and check all your wiring with a test light(buy at autozone, oreillys, napa walmart, etc.) and see if its all right. (positive, ground, and remote) then check your rca with i dont think is possible so you might as well buy knew ones. if all that doesnt work then make sure all wires are hooked up to the speakers, take the apekers out of the box and check. if all fails then bring it to a car audio shop to let them take a look,

Posted on Oct 07, 2007

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OK, you don't bridge subs. You bridge amps, if they are capable of being bridged (not all are).

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1. no all amps can go bad with a bad installer !
2. repairs sometimes go for as much as it was new! so somettimes not worth it!
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First of all, make sure your amp is bridgeable. There are a few ways to bridge subs. series: hook one wire from the negative on the left amp output (or whichever is labeled on amp for bridged)to left sub negative. left sub positive to right sub negative, then right sub positive to the amp positive output.(like a big loop through both speakers) parallel: both speakers get their own set of wires, both negatives go to the bridge negative terminal, and both positives go to the positive bridge terminal. Series-parallel: A combination of the two. say two speakers in series, and one hooked up alone, but all to the same amp outputs. Bridging your amp/speakers basically lowers the resistance of the circuit and makes more current flow, more power, louder, harder hit. In series, it also makes both speakers do exactly the same thing, instead of "stereo sound" or L/R differences. What you're probably looking to do is Bridge in parallel. That will drop the resistance of the circuit the lowest, allow the amp to put out the most amount of current to the speakers, and allow your bass to hit the hardest. If your amp only has one output, hook up the same way as above. Just see what resistance your amp is stable down to. If down to 1 ohm, no worries. if stable only to 2 or 4 ohms, you may want to bridge in series to be safe. That will cause the resistance to go up, and will not pull as much current through the amp. The whole time, just remember Bridgeing and higher current mean HEAT so watch your amp. I hope this helped.

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