I have a 4 channel amp already installed that is powering 4 speakers. I just bought a 2 channel amp to power a sub. How do I wire this in terms of RCA cabels, power wire, ground, and remote wire. What else do I need to buy. Are there any diagrams that show this in detail. Sorry for such along post but I have no idea how to do this. Thanks

 

Make a new power run from the battery. You can ground to the same point as your other amp if they are in the same area. You can tap into the other amps remote lead also. Run a pair of RCA's from your sub output on the headunit to the amp. Connect the sub and you are ready to party.

 

suppose the head unit doesnt have sub out?
y splitters? will it sound the same? is it better to get a h/u with sub outs?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DownBoyDown &raquo;</TD></TR><TR><TD CLASS="quote">Sorry for such along post </TD></TR></TABLE>

why do i find this so funny!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JOMO &raquo;</TD></TR><TR><TD CLASS="quote">suppose the head unit doesnt have sub out?
y splitters? will it sound the same? is it better to get a h/u with sub outs?


why do i find this so funny! </TD></TR></TABLE>

If the head unit has no sub out, use a y splitter. Then you will have to set the low pass crossover on the sub amp. You will need to set high pass on the other amps also since hu's without sub out don't have crossovers built in.