Hey Thatch, thanks for at least responding to me post. I have my own online group where I posed this same question. The response I got (but I'll need verification) is that:If one driver has 87dB, 2 will have 90dB, 4 will have 93dB and 8 would have 96dB. (That's providing you are using the same driver in all cases) Or as he said it, everytime you double the drivers, efficiency increases 3dB. So like above 2 drivers is 3dB more efficinet than 1, 4 drivers is 3dB more efficient than 2 and luckily for me 8 drivers is 3dB more efficient than 4 and brings the M8A's up near the Heil's efficiency.
Hope I'll get more help now on the enclosure as to whether or not it's size is acceptable (I agree with your idea of lack of right-angles) and whether I can/should use it as an infinite baffle or bass reflex. So PLEASE keep the help coming.....
thetubeguy1954 (Tom Scata)
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