Graphophone Polyphone
Posted: Sun Jun 29, 2014 12:08 am
I uploaded a Youtube demo today: https://www.youtube.com/watch?v=cPXo-oWkJmI
Polyphones are fascinating. Two reproducers and two horns, supposedly "doubling" the volume but of course that claim was scientifically flawed. But with two stylii playing the same groove a fraction of a second apart, there is a pseudo-stereo effect which is fun.
I've owned several Edison Polyphones and I enjoy the sound, but Columbia Polyphone attachments don't work anywhere near so well since the design of the Columbia floating reproducers puts the stylii twice as far apart as in Edison machines, creating an echo effect that is too jarring. Plus, it's devilishly hard to get into alignment. Edison Polyphones are challenging enough, Columbias are close to impossible, despite the fact that (like most Edisons) there is a small bracket to link the reproducers and theoretically keep them in alignment. Even when you finally get the Columbia properly lined up, it's common for one of the reproducers to jump a groove midway through a record, sometimes several times, making for very discordant playback.
This demo worked well but you can see even in this short clip how much the delay between the two stylii throws the sound out of sync. This plays as intended but it is not very pleasing, unlike Edison versions.
Considering the crazy high price of the attachment -- $15 -- it's a wonder that any were sold. They're a royal pain in the rear to deal with, and the payoff is certainly not worth the original cost. But what fun today!
The Edison version is infinitely superior, and at least by the end of production it cost less than the Columbia: https://www.youtube.com/watch?v=2GCF9YACuaw
Polyphones are fascinating. Two reproducers and two horns, supposedly "doubling" the volume but of course that claim was scientifically flawed. But with two stylii playing the same groove a fraction of a second apart, there is a pseudo-stereo effect which is fun.
I've owned several Edison Polyphones and I enjoy the sound, but Columbia Polyphone attachments don't work anywhere near so well since the design of the Columbia floating reproducers puts the stylii twice as far apart as in Edison machines, creating an echo effect that is too jarring. Plus, it's devilishly hard to get into alignment. Edison Polyphones are challenging enough, Columbias are close to impossible, despite the fact that (like most Edisons) there is a small bracket to link the reproducers and theoretically keep them in alignment. Even when you finally get the Columbia properly lined up, it's common for one of the reproducers to jump a groove midway through a record, sometimes several times, making for very discordant playback.
This demo worked well but you can see even in this short clip how much the delay between the two stylii throws the sound out of sync. This plays as intended but it is not very pleasing, unlike Edison versions.
Considering the crazy high price of the attachment -- $15 -- it's a wonder that any were sold. They're a royal pain in the rear to deal with, and the payoff is certainly not worth the original cost. But what fun today!
The Edison version is infinitely superior, and at least by the end of production it cost less than the Columbia: https://www.youtube.com/watch?v=2GCF9YACuaw