PerfaLock

I have TWO 4ohm dual voice coil subs and i want to bridge it down so my amplifier sees a 1 ohm load, anyone have something that can help me? like a clear diagram or something.
and one more question, is RMS about half the peak/max power of your subwoofer? and if so, i would have 600watts RMS for each of my subs cuz they are 1200watts peak/max power. so i was thinking of getting a Mono Rockford Fosgate amp for 400$- 1000W RMS, so thats about 2000wat peak power. would that work good to push my subs?

Coolfreak

RMS is the constant power the amp can push at all times. Max power doesn't mean much

lcurle

First off, your amp has to be able to supporta 1ohm load, not many do. The JL Audio 1000/1 is one of the best out there IMO, and it can support a 1.5ohm load. You would have to spend a large sum of money to get a good one that wont crap out on your in a week.

Max power is just a guess. The Consumer Electronics Association is real strict on the RMS ratings on a subwoofer, they all now have to be CEA certified in the RMS field to be sold to consumers.

PerfaLock

yeah the fosgate is stable to 1 ohm

PerfaLock

oh and is it possible to bridge to mono amps together? and if so how

lcurle

to one subwoofer??? Not a good idea

lcurle

Rockford Fosgate also makes a 10,000 watt amplifier

PerfaLock

i mean bridge it so each amp powers one subwoofer, not 2 of them power just 1 alone. And i dont relly care about max power anymore, im just looking to get an amp with good RMS power.

lcurle

yes you can have one amp running one sub, I have done many setups that way. If the sub can handle it.
If your amp it 1000/1 and you hook one sub up to it, that sub will get 1000 watts. You dont have to do anything special like bridging the amp, just hook it up normally.

PerfaLock

oh cool, but can you get both amps to run on one battery? would that kill the battery fast or not work or something?

lcurle

not if your alternator can keep up. Figure out how many amps your car needs to run, then how many your amps needs, if the need is greater then the output of the alternator, your battery will die.

PerfaLock

so if it could keep up, how would you run 2 amps? same as how you would run 1?

lcurle

correct you would need to run a 2 AWG power wires back from the battery and split it into 4 AWG for each amp, just split the remote wire before the amps for signal and use a "Crows foot" for the ground location. If you want a capacitor get one.

PerfaLock

What about the RCA's?

PerfaLock

If you don't have to do anything with the RCA's,
Here's what I think I have to do:

2 Mono Amplifiers.
2 Guage Power wire from battery split to 4 guage, 1 to each amp.
Split remote wire(just slit it in half? and use electrical tape to split??)
Run wires to subs.
Ground each amplifier separately, and whats Crows Foot?
Done?No RCA?

Correct me if im wrong bout anything.

lcurle

rca's go into the first amp, then run a second set from amp 1 to amp 2 with a LPF set. For the remote wire, just use a butt connector to plit into two, dont just use electrical tape. A crows foot bolts to the chassie and you can attach multiple grounds to it, search google and you will find it.

For the remote wire connect 2 leads to one end of the but connector, then the wire coming from the deck, creating a "Y".

PerfaLock

I have 2 tweeters hooked up to my door speakers, is it possible to run the tweeters to a 2-channel amplifer? or do you need 4-channel for midrange and tweeters?

lcurle

ohh my god dont do that or you will blow your tweeters. You should have a 4 channel amp to run all mid-range speakers. Filter out all the bass and you would get crisp clean sound.

PerfaLock

lol, i was asking because i have a 2 channel amp pushing my subs atm, and when the whole amp is disconnected, the car speakers' bass sounds cleaner, but when the amps on it sounds soooo retarded,thats why i just leave my bass on 0. Is there any way to make it so its no extra bass on you car speakers?

lcurle

yeah on your head unit change the bass to -6, strange that the sound is impaired when the amp is connected, sounds like something might be wrong in the wiring. When you have amps in your car it is always good to zero out the eq on the head unit and tune the amp.