6 dB/Octave-Diappolito-D28 is my favorite - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 3 Old 02-17-2006, 09:30 AM - Thread Starter
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I've been building my own speaks/subs for about 30 years, and I still keep coming back to this formula. I drill out the center pole of the D28 to reduce efficiency so I don't need a bleed off resitor and feed the back wave into it's own little transmission line. But that's just me. It's amazing how many $10k plus speakers use this tweeter.
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post #2 of 3 Old 02-19-2006, 01:59 PM
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Any idea what this does to the Fs?
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post #3 of 3 Old 02-19-2006, 04:03 PM
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How can it be D'Appollito and be 6dB/octave?


Kal Rubinson

"Music in the Round"
Senior Contributing Editor, Stereophile

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