The Secret Society of Lathe Trolls

RCA 73-A owner here. This looks like it might be older than mine! How is your turntable coupled to the motor? Mine has this mechanism to the left of the platter. Normally has a cover on it, idlers shift up and down for 33/78. There seems to be very little information on these available compared to t...

Borrowed a Numark portable turntable to check some reference lacquers that smithadamm cut for me. It's got the same tone arm and red plastic ceramic cart that's on all of those USB turntables People Have. I knew they were awful but this measured frequency response is a laff riot: ceramicfreqresponse...

Those driver transistors with the weird integral heat sink look just like the ones in my 70s Acoustic bass amp... are they made by RCA? Mine failed and made full-voltage-excursion crackling noises happen at the output of the amp. Some of them look like they were replaced with a different type with l...

Hi jtm, Also in Austin and I've been interested in getting a disc recorder going for a while... I'm the main technician at Switched On Music Electronics (working on old synths and tape machines etc) If you decide to cobble together an old Presto lathe or something like that, I can do any type of ele...