3 Way Tower Baffle Step Compensation Question
I am working on a crossover for a 3 way tower I'm building with the following drivers.
Dual Denovo Anarchy-708 Woofers with 84.7db @1w/1m
SBAcustics SB15CAC30-4 MidRange with 88db @ 2.83V/1m
Mundorf AMT®19CM1.1-C Tweeter with 91db @ 2.83V/1m
I'm crossing the woofers to the midrange at 450HZ with a 1st order crossover and the midrange to the tweeter at 3khz with 3rd order crossover. My baffle width is 10.5 inches. The BSC formula gives me an f3 of 434 HZ.
Finally my question, do I need a BSC circuit at all or is an LPad on the midrange going to solve my problem? My theory is the baffle step will have little effect on the woofers and it will be just on the midrange, I already have a -3db LPad on the midrange so I'm all set. I've done measurements and I don't don't see a rise in the 400hz to 500hz range.
My math looks like this, two woofers at 84.7db in parallel is 90.7db, the midrange at 88db + 6db for baffle step is 94db - 3db LPad is 91db. Am I wrong?