Quote Originally Posted by gortnipper View Post
Sorry - I cant give you any meaningful advice about those xo's, but they should work fine in GM's speaker design, I would think. I would think that there may be diffs in the sim with a 604E vs. a GPA 604-8H-III, but he would know far better than I. But you would need the series-R.
I did find this: Thiele Small Parameter measurement question for a 604E. I'm going to lean on a buddy to get them built correctly. Needless to say, I'm going to just keep the 604E's. Thanks for all your help.