I have seen these used in PA but not for home use. See attached drawing showing 4 x 6" midwoofers in an old pioneer cabinet below a square tractrix horn. Midwoofers would be wired in series pairs then paralleled to keep nominal 8 ohm impedance I have modelled in edge and it seems to indicate that off axis nulls appear at around 1.5k and up depending on angle. Since I will be crossing at 800hz I imagine this shouldnt be a big problem. What do you guys think?
Pros:
- PA level SPL with decent bass extension and clean mids
- No 12" woofer resonance / breakup to worry about
Cons: Potential phase / lobing issues???
Pros:
- PA level SPL with decent bass extension and clean mids
- No 12" woofer resonance / breakup to worry about
Cons: Potential phase / lobing issues???
Attachments
Hi dabbler,
It's the driver inter C-C distance that for perfect(symmetrical) vertical or horizontal dispersion should stay below lambda/4, that is ~560 Hz but no more than 800 Hz (i.e. blameless => and less than lambda/2) using a >=24 dB LPF/HPF should work just fine too.
Arrayshow:
http://www.diyaudio.com/forums/multi-way/100392-beyond-ariel-75.html#post1209499
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