The Secret Society of Lathe Trolls

Another example of a poorly categorized listing on Ebay, that may be snatched up for a good deal by one of us trolls. This is listed as an "RCA Studio Broadcast Transcription Turntable, Vintage". It's actually an RCA lathe, with over head and a Preso 5C head (if I see that right), in a really cool c...

I'm in Scotland, though, so the main issue is the 50Hz to 60Hz conversion. If I'm going to have to do mods come what may, I'd rather just get a machine in Europe. Don't give up on this yet. I should have some test results in the next 2 weeks from my project and I'm sure it will help your decision. ...

This part is not neccesary to be built with laminated metal, as eddy currents only affect the parts with changing fields, solid metal will do the same work Wow! That is a fabulous job and great idea. One thing I should note about what I did: I got the idea from a forum that discussed phono cartridg...

The Presto 1D head that came with a system I'm working on had very low output, a goofy response curve, some strange resonances, and some distortion I could not explain. IMG_2880.JPG It had been rebuilt by Bruce Leslie in 1993 (he has passed away). So I decided to open it up and investigate. The damp...

Nice. Do the LEDs change colour? They don't. They are just single color warm white LED's. But that brings up an interesting idea though! How about some up lighting under the platter, so the platter would ride on a light cloud spilling light out from underneath and on the wall behind. And the color ...

Alan wrote me. He's fine!! Great news! Let him Know I bought the Martindale Presto 8D system and it's at my place in Eugene. Interesting update: Alan and I have been communicating via his new E-mail address. As it turns out the Presto 8D I recently acquired was once owned by him, and the stand that...

Steve E. wrote:Alan wrote me. He's fine!!

Great news! Let him Know I bought the Martindale Presto 8D system and it's at my place in Eugene.
Hope the family is well.

Thought I would share a useful piece of test gear with you guys. I picked up this Howel-Ronset Output Meter TS-585D/U on Ebay for about $47 including shipping. What does is do / What does it have / Why do I care? First, it's a passive load with 40 different switchable input impedance's from 2.5 to 2...

I use the same amp, on the FLAT setting with computer RIAA ENCODE (and a HUGE boost of high end in addition, about +5 dB shelf at 8kHz up) Hey Tyler, I just ran across a video Steve did with you and your two 6N's. Fascinating! I have the same scope on my 8D. Love that Audio Disc Chip brush. Does th...

I use the same amp, on the FLAT setting with computer RIAA ENCODE (and a HUGE boost of high end in addition, about +5 dB shelf at 8kHz up) That is a valid option as well I guess. Humm, I need to think about that. Assuming I have already bounced files from my Protools Mix system, do you use a stand ...

I messed with my 92A, with a lot of help, adding resistors, and managed to get a good RIAA curve into the EQ. When you did your mods on the 92A to make an RIAA curve, did you leave the NAB alone and commandeer one of the other buttons to switch in your RIAA filters? If so, which one did you choose?...

Also note the need for a series resistor with 1D head (the value depends on the impedance of your 1D). This provides the 500 hz turnover in the standard RIAA curve. So, you really only need the pole at 2122 Hz (75 us RC time constant) and zero at 50 Hz to do the entire curve (you should also provid...

Better to use a simple network with 2 or 3 poles. First suggestion, do a test cut and see what you are getting in the two positions you have. Then you can work out what correction curve you need, assuming you have an accurate playback system. Thanks for your inputs Radardoug. The more I read, the m...

Hi guys, I’m new to the forum. Thank you to Steve Espinola for allowing me to join. I hope not to abuse this honor, and hope to be able to contribute in the future as I come up to speed on this rather daunting learning curve. Please excuse me if this topic has come up before. I have not found specif...