[EdHolland]

Thanks for the contributions folks.

This receiver is Circa 1963 (date of the service notes I have). Most of the capacitors are Mylar or ceramic - there are no paper caps. I'm going to begin by assuming these are fine so fortunately, this reduces the amount of replacement necessary. Of course there are electrolytics under the chassis, and in the multi section cans - these are all in the process of being renewed.

Rather like a classic car, I want this unit to retain character, so will not be chasing major modifications beyond what is required for reliability and safety. Better control over bias, and adapting this to accommodate modern 7591 output valves will be added. Apparently there are important differences in operating characteristics.

Analogman - Thanks for your notes. I tend to agree with your comments, especially on modifications, and always try and check a few sources before considering the value of making changes. I haven't spent much time on AK, but I am familiar with the many quirky received wisdoms of HiFi. I did see the Sheldon Stokes power supply stuff, and mused on following that path for a while, until I saw the Hayseed kit.

One term you used "PEC" I am not familiar with - could you please elaborate?


Thanks again,

Ed