If i have a two channel amp 4 ohms, how do i bridge my two 4ohm subs to it.?

Check these sites out...it is a good reference. http://www.bcae1.com/ http://www.rockfordfosgate.com/rftech/rftech.asp http://www.caraudio.com/forum/showthread.php?t=198477 http://www.termpro.com/articles/articles.html#How If your headlight dims with the bass notes, the “BIG 3” might work. If not an H.O. alternator will be needed, or else be prepared to pour a lot of $$$ for batteries. This site explains the "BIG 3" upgrades. http://www.sounddomain.com/ubbthreads.php/ubb/showflat/Number/312025/page/1 List of items for my ride: Head Unit: Alpine DVA - 9861 Processor(s): - EpiCenter (by: Audio Control) - Apex (by: Kove Audio) Amp: JL Audio 300/4 and 500/1 (constant 800 watts) Cap: One Rockford Fosgate1 farad Cap Front: MB Quart 216 Rear: Boston Acoustics (6x9) SX65 Sub: 1 Eclipse 12" Alum. Dual 4 ohm VC Battery: Kinetik HC1400 Power Cell Alternator: Load Boss 180amps 1/0 ga wire to D-block Using a dual fused D-block in the engine bay - ANL 100 amp fuse (used for H.O. Alternator) - ANL 150 amp fuse (used as power wire to amp) - “BIG 3” upgrade

Check out this link: http://www.bcae1.com/trimode.htm I think that's what you're trying to accomplish

if its a 2 channel amp @4Ohm/channel, and you have 2 speakers @4Ohms, then its best to simply run 1 channel/speaker at a low gain setting...unless they are subs, in which case, you'd start the gain low, and crank until you hear distortion in the subs, then back it off slightly (also works for speakers, but higher chance of blowing them)

YOU CAN SIMPLY DO IT,IF IT IS A BRIDGABLE AMP.if not it is not possible to bridge the amps together,any way, if tried it will take your amp with it.i cant simply explain why because you must study the circuits well.a bridgable amp is designed to bridge in a specific need, so it need some common factors in nature.it will consume more current, than one, so you need a good source of power supply unit.if your amp is a bridgable type,reffer ita manual, to get a proper idea about wiring.