OK, well, the explanation of Jasper's machine explains why I heard what I heard, seems that his machine wasn't quite up to snuff, while others I have heard were, Dave Heitz's machine seemed much louder than Jasper's, even playing an acoustic Sousa disc.
I'm well aware of recording issues, but what I was getting at was more of a question where if a very loud record was playing was the reproducer/compressor somehow tuned to even out the sound (an early automatic volume leveling device of the day like jukeboxes use(d).... Thanks to everyone for comments to my semi-ignorant question/comment! Sean -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Douglas Houston Sent: Monday, August 13, 2007 2:07 PM To: Antique Phonograph List Subject: RE: [Phono-L] Auxetophone Sold! I think that we're waltzing on thin ice here. A conical horn is the least efficient for transfer of sound. A horn is an acoustical transformer. It couples sound pulsations from a samll source of pulsations, at a high amplitude (such as a compression driver of a speaker), to large volume of air at lower amplitude, the acoustical power being unchanged from the horn's throat to its mouth. There is some loss of power, of course, from possible turbulence of ir within it, or other factors. But a horn is a pretty efficient transformer, much as an electrical transformer; typically in the 90s of percentage. (100% efficiency is unobtainable, of course) Now, for this acoustical transformer to perform properly, it must be shaped, so as to have an exponential progression of size as it gets larger. I said earlier, that a morning glory horn should prove to have better output from the sound source than the same size conical horn, because, though the horn maker had no idea, he was making a somewhat exponential horn, and a more proper design. For those of us who have seen the Jack Mullin tape, made many years ago, he explains how the process went with horns, then he demonstrates a Victor Credenza, and the results are vivid, to say the least. He shows a picture of a Victor studio in about 1923, and it's almost unbelievable that they ever got anything on the wax. They used a puny little conical horn, into the cutting head. All of the acoustical power was from the performers. When Western Electric came in with Vacuum tube amplifiers, and magnetic cutting heads, there was a big gain in driving power as well as frequency response, so instead of the performers playing as loud as possible, and the singers screaming, the amplifiers did all the work They were even able to get rid of the Stroh Violins! I've often thought that, had the recording companies employed a big exponential horn, they might probably have overmodulated the cutting head, and possibly had groove interference. Walt had a good take on the situation. I now feel that if an Orthophonic (or any other brand of electrical disc) would be played on an Aux Phone, the sound head would be able to handle it. The one I heard in this area, was owned by Bowen Broock, and probably sold, minutes thereafter. I'll probably never again hear an Auxetophone, especially pushing it to its limits, but I'm willing to bet that it could knock me over! > [Original Message] > From: Ron L <[email protected]> > To: Antique Phonograph List <[email protected]> > Date: 8/13/2007 9:32:09 AM > Subject: RE: [Phono-L] Auxetophone Sold! > > I thought the conical were more exponential than the morning glory and that > the cygnet shape were even better than the conical. Of the acoustical era > horns I am sure the cygnet shape is the best so did I have it wrong with the > other two? > > Ron L > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Douglas Houston > Sent: Sunday, August 12, 2007 10:57 PM > To: Antique Phonograph List > Subject: RE: [Phono-L] Auxetophone Sold! > > That's a reasonable theoey. A Morning Glory horn is somewhat exponential > in form, so it should amplify better than any conical horn > > Was there ever an Evening Glory horn? I've often wondered. > > > > [Original Message] > > From: [email protected] <[email protected]> > > To: Antique Phonograph List <[email protected]> > > Date: 8/12/2007 10:49:20 PM > > Subject: RE: [Phono-L] Auxetophone Sold! > > > > Have never heard an Auxetophone but would expect one would sound better > > with "morning glory" shaped horn instead of the conical horn that always > > accompany them > > in pictures. > > > > > Jim Cartwright > > [email protected] > > EarthLink Revolves Around You. > > > > > > > [Original Message] > > > From: DeeDee Blais <[email protected]> > > > To: <[email protected]> > > > Date: 8/12/2007 10:13:33 AM > > > Subject: [Phono-L] Auxetophone Sold! > > > > > > Portland seems to be the place to find an Auxetophone. > > > In addition to the two that surfaced a few years ago, > > > one sold this weekend. I believe I was second in line > > > but another collector scraped up the asking price of > > > $2500. I don't know if it had the blower assembly > > > but the seller said the electronics did not work. It > > > had the large mahogany horn and had been refinished. > > > I don't know who bought it but he's one lucky > > > collector! > > > > > > > > > > > > > > > ____________________________________________________________________________ > > ________ > > > Yahoo! oneSearch: Finally, mobile search > > > that gives answers, not web links. > > > http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC > > > _______________________________________________ > > > Phono-L mailing list > > > http://phono-l.oldcrank.org > > > > > > > > > -- > > > No virus found in this incoming message. > > > Checked by AVG Free Edition. > > > Version: 7.5.476 / Virus Database: 269.11.15/949 - Release Date: > > 8/12/2007 11:03 AM > > > > > > _______________________________________________ > > Phono-L mailing list > > http://phono-l.oldcrank.org > > > > _______________________________________________ > Phono-L mailing list > http://phono-l.oldcrank.org > > _______________________________________________ > Phono-L mailing list > http://phono-l.oldcrank.org _______________________________________________ Phono-L mailing list http://phono-l.oldcrank.org
