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  • Donating Members
  • Member For: 16y 6m 24d
  • Gender: Male
  • Location: Mooloolaba, QLD

depends wot alpine amp you are running for the subby. I just installed one and it has high level inputs for off the speaker wires, connected them to the rear speaker wires and it rips!

no noise or interference coming through it at all.

  • Donating Members
  • Member For: 18y 8m 18d
  • Gender: Male
  • Location: Melbourne, VIC

Yeah my cousin has an amp with the high level inputs and it farken hammers, with just one 12", the bass on -8 and on the factory headunit.... Can hear him coming a mile away.. He really needs to upgrade the speakers though...

  • Silver Donating Members
  • Member For: 19y 10m 17d
  • Gender: Male

one of your amps will have rca outs so just go from the output of one amp to the input of the other. I'd go from the outputs of the 4 channel to the inputs of the mono.

although, urinal biscuit is on the money, dont bother amping your rear speakers, just bridge the amp and run fronts only of it, will sound much better.

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  • Donating Members
  • Member For: 17y 2m 23d
  • Gender: Male
  • Location: Vic Somewhere - Sometimes NSW

Ok here is one option-

If you have a line (RCA out) on the 4ch amp...

Run the line conv'r to the 4ch amp - then run your fronts and rears from that... connect a pair (or single) rca(s) and run to the input on the 2ch/mono amp which will power your sub...

Easy!

You are best to run a line spliter of your power leads also.... for 15$ far better then running a sinlge fuse to the 1st amp then looping back to the second...

remember your iin the drivers seat therefor wont hear the rears - just leave them as rear fills as others have mentioned above...

its really only worth doing them if you spending $$$$$$ and want it for a reason other then to just say - my rears are done as well...

Edited by smicky

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