Question about Kenwood Excelon KAC-X521 Car Audio Amplifier

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Installing amp with a factory amp

I bought a 2005 Pontiac Vibe, with a factory amp under the passenger seat that powers the regular speakers and a built in Monsoon speaker. I replaced the head unit, and installed my Kenwood Excelon KAC-X521 and 2 12" Dual's. I have everything set right, but very little sound is coming from the subs, is there special wiring needed to use an aftermarket amp with a factory amp?

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  • Patrik Schantell
    Patrik Schantell Mar 18, 2012

    The aftermarket head unit has RCA outputs that are connected to my aftermarket amp, but the wiring for the factory amp is all sealed. I've looked into this for a few days, and I don't think I need a LOC. The subs are working, just at a very low level.



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