oh! i hadn't realized there are 2 diaphragms in there. gee, they were pretty smart back then - must've been by trial and error to find that sound off the two sides of a single diaphragm would sound bad.
yeah, the polyphone is not unlike the old 50s/60s reverb units in cars - a slight delay to one speaker makes it all sound fuller. cool - thanks for the info! On Fri, 23 Jul 2004 09:21:09 -0400 'Gregory Cline' <gwpho...@woh.rr.com> wrote: > I don't believe there is a phase differential between the two horns. > The sound from each horn comes from the same needle vibrating 2 > different diaphragms. So my thoughts are that they play in unison. The > entire argument by Duplex was increased volume, I believe. The sound is > different, however as the horn bells are pointed in different > directions. Therefore, the sound is not coming at you directly from > both horns at once. If you stand very close to the machine while it is > playing, you can differentiate between the two horns and it does sound a > bit odd. Making small left to right movements change which horn is the > primary one you are hearing. When you stand back from the machine the > sounds begin to blend together, eventually becoming a unified sound. > In comparison, on the polyphone cylinder attachment, there is a phase > difference as there are 2 different reproducers playing the same track a > few milliseconds apart. This provides a pseudo-stereo sound and you can > hear a "fullness" to the playback. > Gregg > > pjfra...@alamedanet.net wrote: > > >i've long been curious: what do these sound like? the two horns are > >out of phase so wouldn't the sound be a little...funky? > > > >On Wed, 21 Jul 2004 16:08:54 -0400 'Gregory Cline' > ><gwpho...@woh.rr.com> wrote: > > > > > > > >>Hello group, > >>I would like to offer my duplicate Kalamazoo Duplex for sale before > >>going to other avenues (i.e.. Ebay or MAPS). I am planning to > >> > >> > >attend > > > > > >>the Bilton Show on Sept. 12 and can deliver for free if this helps. > >>Follow the attached link for details and pictures. I am asking > >> > >> > >$6500. > > > > > >>Email or call me if you have questions. > >>Thanks, > >>Gregg Cline > >>zonoph...@woh.rr.com > >>419-424-1201 > >> > >>http://home.woh.rr.com/gwphonos/duplex2.htm > >> > >> > >> > >>_______________________________________________ > >>Phono-l mailing list > >>phon...@oldcrank.com > >>http://mail.oldcrank.com/mailman/listinfo/phono-l_oldcrank.com > >> > >> > >> > > > > > >-- > >-- Peter > >pjfra...@alamedanet.net > > > > > > > > -- -- Peter pjfra...@alamedanet.net
