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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2/17/06 at 9:30am