skar evl

I have a skar evl 12 being powered by an rp.1200 with a boss audio receiver. I’ve had problems with it clipping around 42 volume for a while now, but when I play a sine wave at 40hz it plays perfectly fine and I can turn it all the way to 50. Seems like it only clips when there is a rapid beat...

I need help with blueprints or a cut sheet for a ported box for two Skar Audio EVL 12s that are going into the trunk of a 2012 mazda 3 sedan. Factory specs recommend a single sub with 2.0ft³, a ported area of 24in², and tuned at 32hz. There are 2 evl 12D2's going in. The Amp is the RP-2000D, The...