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Originally Posted by superior
Wow, excellent explanation of the situation (and general audio/electrical physics too). I just had a minor question as an aside. I may purchase an amp capable of 10V line-level inputs (got some Kickers in mind) to power a new subwoofer. After I have located the signal wires from the radio headunit going into the factory amplifier, what is the best way to tap them so that the signal is split to both amps? The balanced 5V seems like it would need a special wire harness or something to maintain that +/- charge separation.
Thanks in advance for the help!
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Just realized I may have misunderstood your question. If you were asking how do you take 4 channels of audio and run it into an amplifier with only 2 channels of input then the answer is a bit different.
Typically you'll find that subwoofers are driven off of a front and a rear channel - so I would take the FL and the RR RCA's and run it to one amp, and the FR and RL RCA's and run them to the other amp. This way you are splitting the load between both subs regardless of fader setting.
If this still didn't answer your question then I need you to ask if differently
d-