The Honeycombs were my entry into the Indy speaker challenge of using only 5 parts, but I was never thrilled with them and I spent more time on the cabinet construction than the crossovers. Fast forward to a couple of weeks ago . Bevernbi sent a pair of 4.7uf aluminum and oil caps to try, and the honeycombs were the only speakers that were using that size with an electrical 2nd order crossover. Can of worms opened.
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Are redoing the XO or just submitting the caps?
I’m redoing the xover. It’s now ten parts, two of which are a bottomless trap to kill the 24khz breakup of the RST tweeter, because the distortion from it propagates down.
I am comparing a few caps, Jantzen silver, Bevernbi aluminum and oil, Bevenbi gold and oil (in Transit), and a couple of Audyns - Q4 and plus.
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Can’t wait to hear about the cap comparision.
What woofer is that?
Looks like Seas CA18RLY, coated paper 7 inch, smaller magnet version
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Yep Seas CA18RLY.
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Do you have a schematic for this 24khz bottomless trap? Is this the aluminum RST or the fabric dome?
Hmm, there are folks who claim that an ultrasonic resonance has NO effect on sound quality because we can’t hear those frequencies. I’m still on the fence, but intrigued by your statement. I heard it before, some years ago.
The fundamental is not audible, but the distortion propogates into the audible range
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So the distortion should be measurable then?
Yes. It will be measurable.
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On my tweeter 3.1uf and 0.02mh coil are what worked.
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I’ve tried HD, IMD, FSAF on tweeter ultrasonic resonance notches , and could not reproduce any measurable difference at frequencies heard by humans. Some folks have told me I can measure stuff good. Any difference observed was simple magnitude difference from the filter Q creeping into top octave frequency response. Still searching for some evidence that an ultrasonic notch does something real at audible frequencies. Not that the few $ in components is a huge investment, but does anyone have a reference of this “measurable improvement” they can share?
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