Can you run a mono amp on 2 ohms to power a single 2 or 4 ohm DVC??

Question

The Alpine S 12" DVC 50-300W RMS comes in 2 ohm and 4 ohm. Someone is selling me one in a box but doesn't know if its the 2 ohm or 4 ohm.
I wanted to get the mono Alpine MRP-M450 amp which is 220 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms).

Question: I want to run the amp in the at 400 watts RMS x 1 at 2 ohms and was wondering if I could do this with either the 2 ohm or 4 ohm DVC.

Also, what wiring kit do you recommend for this amp.

Answer 1

Since you don't know the impedance (ohms) of the sub
you're buying, you won't know what amp to get to power
it at the 300 watts RMS. This is due in part that the
power out will be different for either impedance. I
recommend 300 watts RMS as opposed to the 400 watts
RMS you chose simply because the sub won't handle 400
watts RMS as stated in the specs you provided.

The two scenarios are:

If the sub is 2 ohm DVC, it would be wired like so
http://i81.photobucket.com/albums/j230/sparky3489/SERIES-DUAL.jpg
and ran with a mono amp that's 300 watts RMS @ 4 ohm.

If the sub is 4 ohm DVC, it would be wired like so
http://i81.photobucket.com/albums/j230/sparky3489/SINGLE-PARALLEL.jpg
and ran with a mono amp that's 300 watts RMS @ 2 ohm
like you plan.

It would actually be a better sound quality system if
the sub was 2 ohm DVC and ran @ 4 ohm. This is because
the THD (Total Harmonic Distrotion) will be less. Also
the amp will run cooler and last longer as well. Be
sure the amp you choose is CEA-2006 compliant.

Answer 2

Parallel will up the resistance to 2 ohms, whether while you're wiring to a stereo amp and could be bridging the two channels seeing 2 ohms an ingredient will see 4 ohms on the bridge. Meening you will the two choose a one million ohm sub or a dvc 2 ohm sub

Answer 3

You can wire the dual 4-ohm sub for a 2-ohm load pretty easily, just by wiring the two voice coils in parallel. You can't wire the dual 2-ohm sub for a 2-ohm load; connecting to just one voice coil is NOT recommended, and not just because of the power handling capability.

You don't need a 4-gauge kit for the amp; in fact, that amp doesn't have large enough terminals for 4-gauge. An 8-gauge kit be enough for any 400 watt class-D amp unless you have an unusually long wire run.

Answer 4

You can wire either or. With the dual 4Ohm, just wire each vc's (voice coil) + to the + on amp, wire each vs's - to the - on the amp. This will result in a 2Ohm load.
For the dual 2Ohm, you can only use 1 vc at a time. This will cut the subs rms power handling in half.
Your better off with the dual 4Ohm for this mono 2Ohm minimum load amp.
Hopefully that's what it is!

Also, you'll need a 4g wiring kit for this amp. Use 14 or 12g speaker wire.

Good Luck!