Ok,

I have a couple amp questions. First thing, I'm still tyring to figure out all the Ohms stuff ... so correct me if I'm wrong! If I run two SVC 4 ohm subs parallel to a mono amp then the ssubs will be pulling at 2ohms, correct? So I need to find an amp that supports 2ohms at 12 volts.

Next question ... If a mono amp says that it will run 250x1 RMS at 12 volts ... i've i'm running my subs parallel will that give me a full 250 per sub? or would it really split and give me 125 per sub of RMS?

Third Question ... Would it be better to run a two channel amp or to run a mono amp to a setup like this?? Any advice on how to wire her up??

Last question ... If my sub is rated at 250 RMS then should I get an amp that will push 250 RMS, or is 200 RMS good enough to hit hard?

Thanks guys! My fiberglass box is gettin closer finally! I said maybe christmas but I think it is turning out to be "Next" christmas! I've just been so incredibly busy ... It has been nuts! Well, I will post some pictures of it when I'm done. Thanks again!

If you have an amp that puts out 250x1 to 2 subs, you will be sending 125 to each. You're right on the ohm dropping to 2ohm when in parallel also. In this case it will be better to find an amp that puts out ~500x1@2ohm, a 2ch would work, but you would need 250x2@4ohm, which will most likely end up being much more expensive than a 500x1@2ohm amp will be.

Thanks ... If I get a 2 channel would it be better to bridge it or just run it stereo?

Well if you ran it stereo you would be sending each channel a 4ohm load and you would only get half the power that amp is capable of putting out. If you bridged it, you could either wire the subs in series or parallel. Parallel would give you a 2ohm load, and on all but the best of amps it will send it into protection or fry the amp. Series would show the amp an 8ohm load, again only getting half the power the amp is capable of putting out. Like I said, a 2ch is not the best choice for 2 SVC 4ohm subs.

So really a 250x2 RMS @ 4 ohms stereo compared to a 500x1 @ 2 ohms paralleled will make a big difference? How much difference is there? Is it enough that you would seriously notice? Also, If my speakers are only rated at 250 RMS @ 4 ohms, what would be the best way to run? Prob the Mono, right? Would that be too much for them?

So Bridging would be out of the question because if you bridge, most amps will only take 4 ohms in that mode, correct?

So when I'm looking at amp specs and it says

"Max power, 2 ohm 250w x 2"

and

"RMS power, 4 ohm 90w x 2"

and

"Bridged power 500w x 1"

Then the Bridge will probably be 4 ohms unless otherwise stated, right? So that is how much of a difference the ohms makes ... If I was able to run a 2ohms per channel then I would be able to pull 250 per a channel from the amp ... but if I had a 4ohm speaker hooked up to a channel then it would only be pulling 90 per channel. So really I want to either find a 250wx2 RMS @ 4ohms or just go with a 500x1 @ 2ohms and I should be set. Would those to configs sound pretty equal?

If you could find a 250x2@4ohm amp and a 500x1@2ohm amp of similar quality for comparable prices, then please show me where they are, haha. A 250x2@4ohm amp would work just as well as a 500x1 would, but it will be assloads more expensive for a 250x2 than it will be for a 500x1.

Yeah most amps can only take a minimum of 4ohm when bridged. You could get a 4ch though, that could be another option. If you can find a 4ch amp that does 250x2 when bridged @ 4ohm that would work just fine as well, but it would require more tuning and gain matching than a 500x1 would.

Originally posted by NoRotorNoMotor1
So when I'm looking at amp specs and it says

"Max power, 2 ohm 250w x 2"

and

"RMS power, 4 ohm 90w x 2"

and

"Bridged power 500w x 1"

Then the Bridge will probably be 4 ohms unless otherwise stated, right? So that is how much of a difference the ohms makes ... If I was able to run a 2ohms per channel then I would be able to pull 250 per a channel from the amp ... but if I had a 4ohm speaker hooked up to a channel then it would only be pulling 90 per channel. So really I want to either find a 250wx2 RMS @ 4ohms or just go with a 500x1 @ 2ohms and I should be set. Would those to configs sound pretty equal?

yep, yep, and yep

a 250x2 and a 500x1 should sound the same, considering each speaker is receiving the same amount of power. The differences you might come across are the 500x1 will be a monoblock, maybe even a class d which would make it much more efficient than the other. It might also have a couple extra controls that are ideal for subs, like a subsonic filter (if you plan on porting the subs).