So I don't have too much of a clue about ohms. Just that it seems you get more watts from lower ohms (pretty much a guess on my part from reading up online). I figure you need to match ohms with speakers/subs. Can someone break down everything there is to know about ohm's and speakers/amps before I start buying new stuff. Thanks.

 

ohm's is resistance...the formula for it is R=V/I i=current and v=voltage..u want to try to mach ur over all ohms for ur speakers with ur amp...

 

I figured that I want to match ohms, but I wanted to really know is the difference in sound quality between different ohms.

 

No difference in sound quality. The lower the ohms the less resistance. So basically with a lower ohm load you can take advantage of more your amplifiers power(so long as the amp can safely drive the lower ohm load).

 

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

look at the different ways your subs can be set up. Match an amp to that. Like say you have 2 signgle voice coil 4 ohm subs you would want an amp that puts its max rms power out at 2 ohms.....

 

That rockford site is great, but I just don't understand why the ohms aren't the same. Like if the sub is a 4 ohm sub, why can I give it 2 ohms or 8 ohms?

 

I still don't understand what your saying right there. Ok for instance say your amp is rated to handle 2 ohms, that means that your amp is 2 ohm stable and your subwoofer system should not go no less that 2 ohms. If it does then you run the risk of blowing your amp.

Now you can set out your subwoofer system according to how much subs you have, to get a 2 ohm stable stable system by wiring them together in series/parallel or what have you. So when you connect your subs to the amp the amp will see one resistance value.

http://www.jlaudio.com/tutorials/wiring/index.html

try jl audio wiring site, they may be able to show you the time.

 

You're not giving the subs anything...the subs are sending the ohm load and the amp is receiving. Depending on what ohms your subs are rated at and how you wire them to the amp will result in what ohm load is sent to the amp. The advantage of an amp that is stable to a lower ohm load, say 1ohm, is that you will have a larger choice in sub and wiring options (amount of subs and the power they receive).

 

Actually, you might lose a LITTLE Sound Quality when running lower ohms. On most amplifiers out there, the THD (Total Harmonic Distortion) increases with lower ohm loads.

 

I think it's safe to say the difference is almost impossible to pick up by ear though, especially with subs/low frequency bass.