Ready for Pick-Up by their proud owner
108.34.204.30 |
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| Posted on November 14, 2024 at 10:38:24 | ||
 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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| I don't know!, posted on November 14, 2024 at 14:33:15 | |
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It's things like this that tempt me toward Outboard DSP! One amplifier per driver! Please see the attached link. john
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| have you heard?, posted on November 15, 2024 at 05:39:23 | |
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Posts: 8858
Location: Washington, DC Metro Area Joined: November 16, 2004 Contributor Since: May 23, 2023 |
Legacy Calibres?
Gsquared
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| He's gonna buy you a mockingbird...(nt, posted on November 15, 2024 at 13:40:45 | |
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Posts: 3745
Joined: February 19, 2021 |
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