Originally Posted by SkizeR View Post
Originally Posted by gijoe View Post
There's no reason that a HPF at the bottom end would cause a phase issue.
It absolutely will..

Before subsonic is applied..

vs after a 25hz 18db butterworth (like op mentioned) high pass is applied.

The phase shifted just about 45 degrees at the low pass crossover point, aka, added 50 inches worth of group delay considering the 65hz low pass. 45 degrees is more than enough to cause an audible and measurable difference.

Sweet! I'm not crazy!