Glad things worked out so well. The BSC circuit is such a simple method for adjusting the relative volume produce by the speaker at different frequencies. It rebalances the SPL curve. I agree with your comment that nothing is lost, nothing is added either, and as an additional benefit it helps smooth the slight phase shifts around the baffle step frequency. Unfortunately, the BSC circuit has a bad reputation and purists constantly criticize its use in full range speaker systems. They must like that very forward midrange sound.

Thanks for the feedback,

Martin