as the title states, how do I calculate the resonance peak of an H-frame style baffle and how I do calculate the effective baffle width of that H-frame (so I can model it in linkwitz's spreadsheet)?
Also, could I invert mount half the drivers (RS390HF) in the line array to reduce 2nd harmonic distortion without audible penalty (ie basket/magnet assembly interfering with sound waves). The drivers will be covering the low-end up to ~250/300hz.
