
Meanwhile we have to make do with my 1980 Transcriptor Hydraulic Reference table which doesn't play 78s.
Somebody just told me that there are CDs nowadays.....
Tom
Impressive! And a tangential-tracker, too! Which looks home-made -- even more impressive but since you're in the recording business and an engineer not entirely surprising.pelmut wrote:For playing discs: http://www.poppyrecords.co.uk/other/wor ... G_3331.JPG
It is essential to get the replay geometry as accurate as possible, so that the cartridge signals can be correctly matched for the de-clicking process. Any tracking error results in a time difference between the signals from the two groove walls, which decodes as a spurious vertical signal and upsets the analogue computer (the silvery rack on the LHS above the two oscilloscopes). The box which carries the short pickup arm contains an optical angle-measuring system which controls a motor that tows the box along the track with a piece of string.crfriend wrote:And a tangential-tracker, too!pelmut wrote:For playing discs: http://www.poppyrecords.co.uk/other/wor ... G_3331.JPG
There were commercial "parallel trackers" available, but none of them would cope with 16" broadcast transcription discs, so I had to make my own.Which looks home-made...