Hello all, I am new here and have a couple questions about the subwoofer I am about to purchase. I just finished wiring up a alpine mono amp (MRP-M450), and was looking at a 10" sub to go along with it. In my browsing, A friend offers to sell me either an MB Quart PWE252 or a 254 for under $70. I am trying to find out which one would be best for my amp. The amp feeds 220rms @ 4ohms, and 400rms @ 2ohms. Should I go with the 254 and wire it for 2ohms or just get the 252 and wire it at 4? Both versions of the subs list power handling of 400rms in their specs for either load. Thanks...