They usually had an internal resistance of between 2,000 and 4,000 ohms, for connection to something like a Radiola 18
----- Original Message ----- From: "Ron L'Herault" <lhera...@bu.edu> To: "'Antique Phonograph List'" <phono-l@oldcrank.org> Sent: Tuesday, July 05, 2005 3:58 PM Subject: Re: [Phono-L] Unusual item on eBay > It might be interesting, if it works, to parallel outputs from a portable > CD > or MP3 player and pump them through an Orthophonic horn with this thing. > Thinking Al was interested, I didn't go back and bid on it. > > Ron L > > -----Original Message----- > From: phono-l-boun...@oldcrank.org [mailto:phono-l-boun...@oldcrank.org] > On > Behalf Of Dan Kj > Sent: Tuesday, July 05, 2005 1:45 PM > To: Antique Phonograph List > Subject: Re: [Phono-L] Unusual item on eBay > > I'll find out about the windings, when it gets here (I bought it; for $10, > what the heck) ... I do have a driver made to fit on the Edison diamond > disc machine, and it still works fine - but was also still in its box & > might not have been used in the past. > > > ----- Original Message ----- > From: <aph4...@aol.com> > To: <phono-l@oldcrank.org> > Sent: Tuesday, July 05, 2005 12:30 AM > Subject: Re: [Phono-L] Unusual item on eBay > > >> >> In a message dated 7/4/2005 1:45:17 P.M. Mountain Daylight Time, >> cdh...@earthlink.net writes: >> >> This doo-hicky is a speaker driver that is intended to go in place of >> the >> sound box on a phonograph. It uses the horn of the phonograph as the >> necessary horn for its operation. There were several such attachmernts >> for >> phonographs in the days of battery radios. It's reasonable to expect >> that >> the winding in these speaker attachments are open, and that the thing >> wouldn't work, but.......
