On top of that sq subs take quite a bit more then recommend same as sundown. I have 2 hds315s and ill be running close to 5k and there 1200 rms subs. Btw last setup was 1 hds310 on a 1200.1 and it did a 142.2 in a 4th order tuned to 47hrz. In an integra. .. New setup will be walled in the...