Alpine Type-R

[Duffman]

I'm not sure how two 4-Ohm coils will handle a 2-Ohm load. Other than that, the power setup would be fine if you run it to both coils. From my experience with electrical work (both car audio and residential), I wouldn't do it... because I can't guarantee the subwoofer will handle it. That being said, if you do wire it up like that (presenting a 2-Ohm load to the 4-Ohm sub), you have a good chance of tripping a circuit breaker or, in the case of your car stereo, blowing a fuse somewhere. If you're lucky.

It's your call bro, I'm just pointing out that the impedance won't match and it can blow fuses. Doesn't mean it WILL, but it can. Your call man. If it was me setting it up, I'd either 1) get an amp that'll put out 250w x 2 @ 4 Ohms, or 2) get a second matching sub and wire them together to one large amp, creating a stable 4-ohm load.

What does that amp you have put out @ 4 Ohms? Your best bet might be to run that amp to one coil for now.

[cam2Xrunner]

You'd wire the sub like this



Your amp will see a 2 ohm load. Don't worry about the sub, that is the way it was meant to be wired.

[cam2Xrunner]

Duffman, your train of thought is wrong when you talk about if the sub can handle 2 ohms. You don't have to worry about the sub, that's how it is supposed to be run. You have to be concerned about wether the amp can handle 2 ohms when bridged. In his case it is fine.

[Duffman]

Do you have any links to verify that? I've never heard anything to say a pair of 4-Ohm coils are designed to handle 2-Ohms. If they are, that's awesome, and go ahead and hook that stuff up

[cam2Xrunner]

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

1 DVC driver with Voice Coils in Parallel
Connecting the two voice coils of the driver in parallel (+ to +, - to -) will result in the following impedances:
Dual-6 Ohm Subwoofer: 3 Ohms
Dual-4 Ohm Subwoofer: 2 Ohms
Dual-2 Ohm Subwoofer: 1 Ohms



The subs don't care wether you wire them in parallel for the amp to see a 2 ohm load, or series to get an 8 ohm load.

What's important here is that the amp can handle a 2 ohm final load.