EWBrown wrote:Definitely that amp's PSU needs some heftier rectfier diodes, the 4007s will work, but for how long ?....
I still have 97 of them left from the pack Yellow_Light_Colorz_PDT_01 Yellow_Light_Colorz_PDT_02 Yellow_Light_Colorz_PDT_03
But seriously, since Ed Brown, Ty, Don, and Soren all suggested that the rectification be upgraded, I ordered a bunch of heavier duty diodes from Mouser:
UF5408-E3/54 - Ultra Fast Recovery Rectifiers Vr/1000V Io/3A
http://www.mouser.com/Search/ProductDet ... -UF5408-E3
BY255P-E3/54 - Standard Rectifiers 3.0 Amp 1300 Volt
http://www.mouser.com/Search/ProductDet ... -BY255P-E3
I am not sure if my tin-ears can tell the difference between the two types, but it is a lot cheaper than comparing two types of $20/foot speaker wires.
I used to work for Digital Equipment also in Littleton, MA. during the 80s, and have lots of fond memories - huge rats who lived in the obsolete PDP-11/70 cabinet at The Mill, "discontinued equipment" in The Pond, etc...Yellow_Light_Colorz_PDT_17
The Edcor XPWR071 can probably power a 90-100W/channel KT88 PPP stereo amplifier like this one (with an additional heater transformer):
As Ty said, whether one can safely lift the stereo version of such an amplifier in one chassis remains to be seen. :o
/b