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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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Back in 2022, I built a prototype 2-way with Fountek's NeoCD3.0 ribbon and Eton's 5-312 woofer, which I think has a Kevlar-weave cone. Somebody later heard it and said it had the best midrange he had ever heard, but what could I do with a more generous build budget?
Over the course of four iterations, the design grew into sporting Purifi's PTT5.25 woofer-mid, two passive radiators per speaker, and the truly amazing Beyma TPL-75 3-inch AMT, which has output down to 1kHz, and which can cross over as low as 1,800Hz. But my project (crossover engineering by Curt Campbell) has a 2,400Hz crossover point.
Ironically enough, in the more that one year I have been working on the design for that guy, two loudspeaker companies invented in parallel two very similar speakers: Von Langa's 2-way with Purifi woofer and AMT tweeter, and Radiant Acoustics' Clarity 6.2 (ditto).
Jim Tuomy, who has six patents as well as Bose Corporation's "President's Medal," computer-modeled the cabinet acoustics. He also played a decisive role, when he told me that the Purifi woofer deserved a better tweeter than the Fountek ribbon.
I co-designed the industrial-design look with Corwin Butterworth, who had studied at the world-famous Rhode Island School of Design Furniture Design program.
The cabinets are sold Richlite, except for the Richlite Bamboo Composite front panels. The boxes were finished in Steinway & Sons Piano High-Gloss Black, by Steinway's outside contractor for special finishing jobs.
The perimeter of the front panel got five hand-rubbed coats of Light Red violin varnish, and then two coats of hand-rubbed Amber violin varnish, with powdered gemstone-quality amber as the colorant.
If I had to do it all over again, I'd recommend two identical woofers, to make up for the efficiency loss of the Baffle Step Compensation.
OK, now to take a little break!
john
PS: Yes, they do sound very good!
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Topic - Ready for Pick-Up by their proud owner - John Marks 10:38:24 11/14/24 (7)
- have you heard? - G Squared 05:39:23 11/15/24 (4)
- No, I have not heard it. - John Marks 08:44:10 11/15/24 (2)
- RE: No, I have not heard it. - G Squared 10:37:11 11/15/24 (1)
- He's gonna buy you a mockingbird...(nt - peppy m. 13:40:45 11/15/24 (0)
- RE: have you heard? - Don Reid 06:33:34 11/15/24 (0)
- Look nice, presumably sound awesome - Brian H P 13:38:00 11/14/24 (1)
- I don't know! - John Marks 14:33:15 11/14/24 (0)
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