That's about what I have been doing. Just looking for a better way. You are absolutely correct about that window being big. I had the driver in with no fiber glass and the back panel just laid in and the first cut sounded real good. Didn't measure as good as it sounded but I was sure happy. I am trying to determine if I have a room issue or a sensitivity issue. My cabinet is tunned for 50 Hz and crosses over with a L/R at 250 hz so at 250HZ I am down 6 db and the peak is right smack in the middle of the too!!! I already tried the woofer full range and the peak is still there so I am leaning towards the room. I have not moved it yet as that is the next step. This sure does keep you thinking. Thanks for the encoragement.