if you have the dual 2ohm version youd be getting 250watts either way you wire it, BUT i HIGHLY ADVISE that you wire it in series on the subwoofer and then wire it bridged on the amplifier.
just because the left and right channels are not always the same music wise so its best to make the amplifier a mono amplifier by bridging it. it gives the subs 2 voice coils the same exact signal so theres no chance of one voice coil fighting the other with slightly different signals!

 

so postive on one channel and negative on the other? what you mean wire in series?

 

http://www.bcae1.com/srsparll.htm

 

Sure sounds like you're treating is as a volume **** (or maybe a power ****, which isn't right either)

You NEED to know which one you have. It makes all the difference. It's easy enough to figure out, you can use a digital multi meter and measure the resistance (in ohms) across each voice coil.

you're amp can't put out enough power to hurt it....with that said, you definitely can hurt the sub (and the amp) by over-driving the amp and sending the sub a clipped signal. And one way you can do that is by turning the gain **** all the way up

it's putting out the same amount of power as if the gain was turned all the way, just at a different Head Unit volume level.

 

i see how to do 2 subs but how one?

 

how would i test the ohms with a multi meter?

 

http://mobile.jlaudio.com/support_pages.php?page_id=161

I like JL's wiring diagrams, very easy to read.

It should have a setting for resistance in ohms (most likely it'll have an Omega symbol with x1, x10, and x1000 settings. You'll want the x1 setting). Then take the "positive" lead coming out of the multi meter and stick it in the positive terminal. Do the same for the negative lead and negative terminal.

 

on the back of my box? or off amp? and should i have music on?

 

None of those. Put the lead directly in the Subwoofer's positive and negative terminals. Be sure to take out all the wire in the terminals, so they aren't hooked up to the amp, or to the other voice coil.

 

wouldnt putting it on the back of box show the resistence of full sub and how its wired?