BF First Test
Posted: Fri Mar 20, 2015 12:51 am
OK:
I got the Lyric reproducer back from APSCO some time ago: unfortunately, they had miscalculated the length of the diaphragm link, so that the stylus was not contacting the cylinder properly.
My initial attempts to modify this resulted in damage to the link attachment to the diaphragm (not the original mica diaphragm I had sent with the reproducer, but a metal replacement they had put in - I am still waiting for them to locate & return the original, plus a replacement for the damaged metal one).
I managed to jury-rig an attachment for the link, and experimented with finding the correct length for the link, using a softer wire than APSCO had provided. In the course of my efforts, however, the tension spring became damaged, and I was forced to replace it.
Anyway: I finally managed to get the reproducer working somewhat adequately, but I am not sure that it is at optimum performance. Here it is, playing a Columbia wax cylinder from the 1902-1904 period:
http://www.dailymotion.com/video/x2k11c ... stra_music
I find the playback somewhat lacking in the higher frequencies: is this due to problems with the reproducer, or deficiencies in the Columbia cylinders of the period?
Bill
I got the Lyric reproducer back from APSCO some time ago: unfortunately, they had miscalculated the length of the diaphragm link, so that the stylus was not contacting the cylinder properly.
My initial attempts to modify this resulted in damage to the link attachment to the diaphragm (not the original mica diaphragm I had sent with the reproducer, but a metal replacement they had put in - I am still waiting for them to locate & return the original, plus a replacement for the damaged metal one).
I managed to jury-rig an attachment for the link, and experimented with finding the correct length for the link, using a softer wire than APSCO had provided. In the course of my efforts, however, the tension spring became damaged, and I was forced to replace it.
Anyway: I finally managed to get the reproducer working somewhat adequately, but I am not sure that it is at optimum performance. Here it is, playing a Columbia wax cylinder from the 1902-1904 period:
http://www.dailymotion.com/video/x2k11c ... stra_music
I find the playback somewhat lacking in the higher frequencies: is this due to problems with the reproducer, or deficiencies in the Columbia cylinders of the period?
Bill