The M500 is surely a really nice amp....a little under powered for 2 twelves though. If you plan on getting 2 m500s what ohm rating are you going to get on the speakers.

for one m500 you would want the 2ohm speakers so you can run the voice coils in series and the speakers in parallel and come out with 2 ohms to the amp.

If running 2 M500 (one to each sub you would want the 4 ohm version and run the voice coils in parallel so each amp would see a 2 ohm load.

So I suppose ultimately you would want the 4 ohm speakers but when you are running them on a single M500 they will be greatly underpowered since you will have to run an 8 ohm load to the amp.

That was just the thought process I was going through when I bought my setup so just figured I would share.

Chad

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