Posted by PakProtector [ 205.188.117.72 ] on January 14, 2006 at 07:23:30:
In Reply to: Re: Restored Citation II posted by Jim McShane on January 13, 2006 at 08:38:53:
After pressing 'submit' it dawned on me I had not mentioned the source of my parts kit. Jim did some trading for some valves I had, and I got his full-on resto kit and directions.
They made a complicated looking job relatively simple. I'll make a few suggestions: remind the rebuilders that both sides are the same, and take one side apart at a time. That way, there is the original( hopefully) on the other side to compare to. I still managed to neglect the g2 connection on the 'B' side pair of 12BY7's. Low voltage power up with a variac put that one to the light.
All the bits, and all the wire to do the job came with the kit. The new PS is dual mono, broken up into two branches after the main B+ to the finals. I replaced the 9-pins with old nearly NOS from a 'scope. Thank goodness nobody rolls tubes in scopes. The initial testing pre-resto indicated the originals were a bit dodgy. My carbon comp resistors had also drifted significantly, so they got replaced with a mix of carbon film( mostly 2W types from Handmade Elec) and metal film IRC GS3.
Matched pairs of Tektronix 12BY7 were a nice fine in my college surplus and salvage...:).
And to a previous poster, Jim is also one of the good sources for tubes.
Anyway, I am happy with the amp, and having confirmed the quality of its output Iron, feel quite confident on borrowing its Iron for the 813 project. It'll be neat to see how it stacks up against the Heath W6's Peerless Iron.
cheers,
Douglas
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