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New MMT from Dennis Murphy with SOTA drivers!

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Dennis Murphy

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The looks are definitely interesting to say the least, but if it sounds good I'm all for it. It's a very interesting design, looking forward to seeing what comes of this. Here's hoping we get some more hard data! (and hopefully some more pleasant conduct as well)
Interesting like a '58 Buick. This is an active design that I didn't participate in. The tip-off is the location of the tweeter in a cow-catcher position. That wouldn't work in a passive design with limited electrical delay capability. I did work up a passive version with the tweeter on top of the cabinet back a few inches to time align with the Purifi's. It also used a conventional, albeit very long and large, port. The verdict was: Purifi's with long port--gooooooooooooooooooood. Air Blade tweeter with current drop-off in response below 2 kHz--needs work. If the Air Blade folks figure out how to damp internal back waves without sacrificing low-end response, it could be killer crossed at 1200 Hz.
 

Martin

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Stuff nightmares are made of!
883097f1ab4274bd018e90884081077b.jpg
 

XpanD

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Interesting like a '58 Buick. This is an active design that I didn't participate in. The tip-off is the location of the tweeter in a cow-catcher position. That wouldn't work in a passive design with limited electrical delay capability. I did work up a passive version with the tweeter on top of the cabinet back a few inches to time align with the Purifi's. It also used a conventional, albeit very long and large, port. The verdict was: Purifi's with long port--gooooooooooooooooooood. Air Blade tweeter with current drop-off in response below 2 kHz--needs work. If the Air Blade folks figure out how to damp internal back waves without sacrificing low-end response, it could be killer crossed at 1200 Hz.

I should've probably clarified that I meant the Air Blade driver itself, there -- I'm aware you had nothing to do with that specific speaker design. Thanks for the reply though, that's quite interesting!
 

Rick Sykora

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Interesting like a '58 Buick. This is an active design that I didn't participate in. The tip-off is the location of the tweeter in a cow-catcher position. That wouldn't work in a passive design with limited electrical delay capability. I did work up a passive version with the tweeter on top of the cabinet back a few inches to time align with the Purifi's. It also used a conventional, albeit very long and large, port. The verdict was: Purifi's with long port--gooooooooooooooooooood. Air Blade tweeter with current drop-off in response below 2 kHz--needs work. If the Air Blade folks figure out how to damp internal back waves without sacrificing low-end response, it could be killer crossed at 1200 Hz.

Perhaps a change to the thread title is in order? Or is it just a matter of time?...
 

Rick Sykora

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