The Talking Machine Forum — For All Antique Phonographs & Recordings

i wandered around the APS show looking for someone with a machine to play brown wax. I have made a bunch of recordings and the playback on bass always buzzed. the options I saw were $2K machines and i didnt want to go there. great to see them play a few records. I spoke with a fellow, stage left, explaining how my automatic reproduction reproducer buzzed on bass, and he told me to back off the top piece, ie, unthread it an bit. well i had to back it off a bunch, but oh yeah, all the difference now.

via my first horn... thanks victrola guy and walmart $2.44...

these reproduction automatics work great. back off the threads.... what an improvement.



http://youtu.be/kgFXAQpkFs4

what it sounded like before, buzzed out bass

https://www.youtube.com/watch?v=N9pWcoubv-4

Great sounding automatic! It does seem like when some work on reproducers the biggest mistake is tightening the clamp ring down too tight, all that it has to be is air tight, that is all, the glass in the automatic works like a piston, the whole moves up and down, if it is clamped, it can't respond right,also the original gaskets were a softer natural rubber, thus today, the clamp ring has to be even more loose than it would have been. Acoustic recorders can record bass, I made a few crude frequency response tests, by recording test tones generated on Audacity to the studio acoustic recorder I could hear (acoustically reproduced) from 45-7,000 cps way more than most would have you believe you could record with the acoustic method A 5' horn and listening tubes were used for listening to the tests. The horn produced the higher frequencies better, and you hear the bass with the listening tubes.