how to power powerful Subs

L|_|da · #1 03-30-2005, 04:14 PM

for my regenecy im looking @ 2 Pioneer 12' subs. 1000W Rms and 3000W peak. this is @ 4ohms. What sort of amps do i need? do i need a 3000W @ 4ohm for each? or can a run a lower ohm amp? and what kind of amplifiers do yall recommend.

sr20de4evr · #2 03-30-2005, 04:27 PM

as far as I know, those are spl subs, which means they will sound like ass on music...they'll just get really loud

If you still want to go with them, you would want somewhere around 2000rms at 2ohm. Not too many choices at that impedance, us amps is the only company that comes to mind.

ngsm13 · #3 03-30-2005, 04:39 PM

Quote:

Originally Posted by sr20de4evr

as far as I know, those are spl subs, which means they will sound like ass on music...they'll just get really loud

If you still want to go with them, you would want somewhere around 2000rms at 2ohm. Not too many choices at that impedance, us amps is the only company that comes to mind.

Yup, and pay absolutely NO attention to anything ever says PEAK. The only power rating for subwoofers or amplifiers that matters is RMS!

So, I'd look into something else in all honesty...

NG

AndonD454 · #4 03-30-2005, 05:10 PM

actually im thinking those woofers are dual 4 ohm, not just 4 ohm. so this means that if you had a pair you could wire them in a series for a final impeadence of one ohm. and yeah there are a lot more amps that do 2kw at one ohm. and yeah those subs are just for getting loud as balls, so if youre into shaking blocks thats cool but if you want some sound quality there are subs that will get as loud that will still sound better.

sr20de4evr · #5 03-30-2005, 06:39 PM

oh yeah they are dual 4, so you would wire them in parallel and get an amp that does around 2000rms at 1ohm

bumpinstang77 · #6 03-30-2005, 06:58 PM

NOtice that you don't need the full 2kw ESPECIALLY if your not too sure of what your doing.

AndonD454 · #7 03-30-2005, 10:39 PM

Quote:

Originally Posted by sr20de4evr

oh yeah they are dual 4, so you would wire them in parallel and get an amp that does around 2000rms at 1ohm

shit... meant to say wire in parallel but accidently said series

oh well

Integra4200 · #8 03-30-2005, 10:42 PM

anyone care to exlain exactly what that means to wire subs in parallel? prolly a dumb question but im new to this.... im jus startin to understand ohm's and everything... heh

AndonD454 · #9 03-30-2005, 11:04 PM

http://www.crutchfieldadvisor.com/S-...pedance=DVC4x2

check out the 1st diagram.. notice all positives are wired together and all negatives together.

basically wiring positive coils together and negative coils together to the amp. also, for every time you do this, your final impeadance is divided by two.

so in this case, you have two dual 4 ohms subs. wire the sub itself in parallel, you now have a 2 ohm load to each sub. now, wire each "2 ohm" sub together and you now have a final impeadence of 1 ohm.

sorry if its confusing, i tried to simplify it and may have ended up just making it sound weird.. im definately no electrical engineer

Diceman83 · #10 03-30-2005, 11:05 PM

Quote:

Originally Posted by Integra4200

anyone care to exlain exactly what that means to wire subs in parallel? prolly a dumb question but im new to this.... im jus startin to understand ohm's and everything... heh

It means basically to connect all the positive (red) terminals on the subs to the positive connector on the amp, and all the negative (black) terminals to the negative connector. If you were to do series on a DVC sub, you'd be connecting one positive to the amp, then the negative to the other positive, and then the last negative to the negative on the amp (or the next sub if you wanted to go to 16 Ohms for some unknown reason). Somewhere in the past threads we had a whole debate about this, and I had a bunch of equations to support what I was saying. Don't feel like looking for it though.

::edit:: darn it, he beat me.

L|_|da · #11 03-31-2005, 05:44 AM

ok. how about one of these 3 sbus?
http://www.audiobahn.com/frame2004.html < the immortal series
or http://www.alpine-europe.com/alpine/...nguage=english
or this http://international.jbl.com/car/GTi...at=SUB&ser=GTI
if anyone else has any ideas on subs please let me know.

and how about this amp?

AndonD454 · #12 03-31-2005, 04:10 PM

how much $ do you have for this system?

L|_|da · #13 03-31-2005, 04:21 PM

seeing as i will be installing it in the future, doing reserach now i can save as long as need, but im looking @ about 2-3K on subs and amps.
anf about 600 on HU and speakers
so about 4K total

sr20de4evr · #14 03-31-2005, 04:42 PM

wow that's a screwed up budget if I've ever seen one

I have almost twice as much invested in the HU and front stage than the substage, and I still feel like I spent too much on the substage in comparison. You do realize that 90% of your music is being reproduced by those front speakers, and the other 10% is from the sub right? And you're spending 10x more on the substage....that makes sense.

Brandish · #15 03-31-2005, 11:26 PM

^^^^^ Agreed...

You may want to consider balancing out your system a little more, but I guess that's totally up to you. As it is with what you're suggesting, all you're going to hear is bass. A HU cannot supply enough power to your speakers to make that setup sound even remotely decent, so maybe you should look into budgeting for an amp to power a nice set of component speakers. I usually tell people to forget about rear fill, but again, that's personal preference.

Out of those other subs you suggested, the GTi gets my vote, although I hear the Type X is also a very nice sub. A single W15GTi in a custom ported enclosure paired with a GTi component set, all powered by JBL/Crown amps would be very nice indeed...

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