Adding a 4 channel amp

Will my signal to my subwoofer loc change if I upgrade my door speakers and add a 4-channel amp after I already had a subwoofer with a LOC connected to my rear door speaker wiring? Is there a way I should wire it differently? This Silverado from 2015 has a factory HU.

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Which LOC are you using? You could use your back speakers the way you now do, or you could do something similar to the LC7i.

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It will, in fact, change the signal. Your 4 channel should have a signal/RCA output, if you do you can use it.

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Without altering the subwoofer signal, how would I connect the four channels to the speakers? For the speakers, I would be installing a second aml as my sub is powered by a mono block.

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You cannot, you will have to change the sub signal, to get everything to work. Just need an extra pair of rcas

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Right now, I’m using an LC2i Pro. There are two outputs from it. Bass number one. It is going to my mono amplifier. 1 is the primary output. It is going to my four-channel amplifier. I have two remote wires that exit the LC2i’s remote. 1 to each amp

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Did you then run speaker wires from your four channels to your speakers from there? Since this is my first actual build, I intend to use the factory wiring, therefore I’m currently storing information. I’m installing the sub right now, and I’ll upgrade the speakers when I get the money.