In addition to looking sloppy I find it'd be really hard for most people to believe in a design that is not popular, not reviewed by specialists, basically not known. While still claiming to be second to none.
I'd pay $500 for a pair of Frugel-horns that are at least well known in the DIY realm. Same thing for an assembled Overnight Sensations or other well regarded open-source designs. I'd pay that much if the cabinets were really well made and looked better than what I (or my 5yo niece in this case) could do in my garage too.
I'd pay $500 for a pair of Frugel-horns that are at least well known in the DIY realm. Same thing for an assembled Overnight Sensations or other well regarded open-source designs. I'd pay that much if the cabinets were really well made and looked better than what I (or my 5yo niece in this case) could do in my garage too.
There it is, and Dave probably knows better and can correct me. Anyway it'd be her choice if she is paying the patent holder. It sounds sketchy to hear that affirmation though. Patent has expired 8 years ago:
1990-06-19
Priority to US54058290A
1991-11-14
Application filed by Purvine Harold O
1991-11-14
Priority to US07/792,010
1994-04-19
Application granted
1994-04-19
Publication of US5304746A
2011-04-19
Anticipated expiration
2019-04-17
Application status is Expired - Lifetime
US5304746A - Reduction of standing waves and intermodulation distortion in electro-acoustic transducer
- Google Patents
since hornresp now can do volume "steps", it might be interesting to approximate what happens. Fibhorn 3 has the same external bulk (~4.3 cubic feet) as a Fostex BK20 BLH and probably similar internal airspace. Fibhorn 3 appears to have an exit around an 8 inch driver's Sd. There's only so much which can be done for a given bulk-driver combo 
Do the chamber volumes step down ? up? Her cabinets should be pretty rigid with 0.5" MDF internal panels.
Do the chamber volumes step down ? up? Her cabinets should be pretty rigid with 0.5" MDF internal panels.
Anyone got a picture of her EnABL job?
EnABL has gone thru a process… we are now into EnABL2 with a number of tricks beyond what is in the patent.
I paid Bud a lifetime royalty just before the patent expired. No royalties are due any longer, and there never were any outside the USA. Any payments to Bud would be in appreciation of what he has given us.
Note to runievil: I EnABL FE126 for $130, but getting them here and back will likely cost more.
dave
EnABL has gone thru a process… we are now into EnABL2 with a number of tricks beyond what is in the patent.
I paid Bud a lifetime royalty just before the patent expired. No royalties are due any longer, and there never were any outside the USA. Any payments to Bud would be in appreciation of what he has given us.
Note to runievil: I EnABL FE126 for $130, but getting them here and back will likely cost more.
dave
Dave you do an amazing job at enabling every driver I have bought from you over the years. I have one pair I kept to do a project with. I still.have to find time to start the project. Do to my Job and life at home keeps me busy but, hoping this fall or sooner I will have time to start the building process. I will only buy from Dave with the enAblel process. Thanks Dave for all you do. Cheers Jeff
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