dual voice coil problem/solution?
 

i asked for help on my sub choice a few weeks ago on here...decided on the 12w3v2-d2 from JL audio. however, I'm only running one sub but I want to run it at 2ohms. It says in the manual that to wire it in parallel u get 4ohms and series u get 1 ohm. I want 2 ohms to get the best performance out of my amp and my amp isnt 1ohm stable (it just says its 2ohm stable). Do I have to replace the sub?

your sub has two 2-ohm voice coils.
you can either run it at 4 ohms or 1 ohm.

2+2 = 4ohms (serial)
2||2 = 1ohm (parallel)

running only one of the coils is not recommended. your best bet is to replace the sub. get a DVC 4ohm sub, or a single coil 2-ohm sub.

has any1 else tried this? does it work.. i'm kind of hesitant, i got a bick read piece of paper saying do not run a single voice coil haha

the safest thing to do is to exchange the sub.
what blue says is also safe (supposedly :p) but I've never tried it :)

Either exchange it, or - if you've got enough power - buy a second one. You can then go series/parallel for a final 2 ohm impedance.

That's what I have, only I'm working with DVC 4 ohm subs and a 4 ohm final impedance.

Don't feel bad about this - I did the EXACT same thing when buying my...ummm....second sub setup, I think. ;). I bought a DVC 4 ohm sub for use with an amp that was only 4 ohm stable when bridged. Wound up returning it (the sub, not the amp) and getting the correct configuration.

~HH

here is another solution . Assuming you have a stereo amp for your sub and it is stable to 2 ohms stereo you could run one coil to each channel . In theory you will have the same wattage to each coil , example .amp puts out 400 watts mono into a 4 ohm load ,this is the same as 200 watts into a 2ohm stereo load .
or you could buy a D class amp that is stable into 1 ohm ,keeping in mind that as you lower impedance you also lower your damping facter of the amp .