So I just switched from a PCA1500d to a AQ2200d, I was surprised with the sound.
First I have a 270+ HO alt from DC, a KHC1800 in back and 2 SDC2.5-12's in a ported box.
I had my PCA1500d set up with a DMM was reading app 1400 at 1 ohm at 40Hz, I hooked up the AQ2200d and based on the AC...