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

first of all your question & details are bit confusing

first you say two 4ohm subs & then you say two 4 ohm speakers

i'm assuming it as a SUBWOOFER but you didn't tell whether they are single voice coil(SVC) or dual voice coil(DVC)

speakers are not mainly DVC

so if your subs are DVC than you can wire them series/parallel

and you will get 4ohm load at your amp

http://www.the12volt.com/caraudio/woofer_configura...

but if your subs are SVC then you'll get 2ohm or 8ohm load

http://www.rockfordfosgate.com/rftech/woofer_wizar...

if need any other help in wiring click this links

http://www.the12volt.com/caraudio/woofer_configura...

http://www.rockfordfosgate.com/rftech/woofer_wizar...

might this images will help you

http://www.freeimagehosting.net/uploads/5e986df2eb...

http://www.freeimagehosting.net/uploads/c4dcb2ba7e...

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=198...

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/show...

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

Sorry man but you can't. Run the svc together + to + and - to - making the two 4ohm coils become one 2ohm load or go amps + to one speakers + and amps - to the others speakers - then the first speakers - to the second speakers + making it a single 8ohm load. Good Luck

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.

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 gotta be careful with that stuff. you really need to know what you are doing when you start getting into bridging amps and going down real low with your ohm loads.

Check out this link: http://www.bcae1.com/trimode.htm

I think that's what you're trying to accomplish