In Reply to: The Mellow Monster 8 posted by freddyi on February 12, 2017 at 14:26:38:
Freddy
You ask the best questions around here! Sometimes questions seem too difficult to answer, but with loud speakers all roads lead back to Olson where more things seem to have been forgotten than have been learned since the great man passed. Of special interest is Fig.8 and 9 in the patent application, and in particular sections 29 and 31 of these two figures which depicts a secondary air chamber following the beginning of the horn throat. This is accompanied by an analogous electrical circuit diagram along with a description in the text which describes the effect of such a chamber in terms of an analogous acoustical capacitance and inductance filter. And I thought I had invented this in the 90's following some experiments with a closed chamber version of Bruce Edgar's "Edgar Gap" described in Speaker Builder! Luckily I didn't waste any time and money trying to patent it. Also of note is that of the 44 references of the patent in later patents by others, all but two were cited by the examiner! There is no mention in the Mellow Monster article by author Roald Dybvig of Olson or the patent, but the Mellow Monster fairly screams OLSON! My Dad built a pair of Mellow Monsters in the early 60's with some 828 mids and T35's on top. Unlike Paul Joppa I never got to hear my first record The Ballad of Davy Crockett on them, as my Dad had an audiophile turntable which wouldn't play 45RPM singles.
Paul
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Follow Ups
- RE: Mellow Monster Mania! - Paul Eizik 10:46:20 02/13/17 (12)
- RE: Mellow Monster Mania! - thermionic addictions 16:12:18 02/14/17 (11)
- RE: Born on a mountain top.... - Paul Eizik 10:25:52 02/15/17 (10)
- Great Story!. - Zipcord 05:57:06 02/17/17 (3)
- RE: Great Story!. - tomservo 08:54:40 02/21/17 (1)
- Thank for posting the picture - Zipcord 12:51:39 02/22/17 (0)
- RE: Great Story!. - DIY John 04:17:48 02/18/17 (0)
- Olson - Inmate51 07:28:16 02/16/17 (5)
- RE: Olson - -- I'm Just Wild About Harry Too - Download "here" - freddyi 18:57:56 02/16/17 (4)
- RE: Olson - -- I'm Just Wild About Harry Too - Paul Eizik 11:15:58 02/17/17 (2)
- RE: Olson - -- I'm Just Wild About Harry Too - freddyi 13:17:44 02/17/17 (1)
- RE: Olson - -- I'm Just Wild About Harry Too - Paul Eizik 08:25:04 02/18/17 (0)
- RE: Olson - -- I'm Just Wild About Harry Too - Download "here" - Inmate51 08:59:33 02/17/17 (0)