View Single Post
Old 17th Jan 2008, 9:40 pm   #18
mastermanx2001
Retired Dormant Member
 
Join Date: Jun 2007
Location: London, UK.
Posts: 366
Default Re: Quad 2 Valve power amp questions

Hi GF and Ed and everone interested. Right! With the used GEC KT66s I have put a new (old stock) Pinnacle GZ34 in and rechecked the voltages. HT before choke = 358V, after choke = 352 V and the voltage across the 193 Ohm cathode resistor is now 27.5V. What does this mean. I'm not too good with the graphs etc. Oh yes, the mains voltage here is pretty stable.

Also, still not sure what is best as regards the HT fusing. I saw the Redifusion amps, but cannot see where in the circuit the fuse is. Regards, Paul.
mastermanx2001 is offline