Re: High voltage V1 Pin1?
Posted: Thu Sep 15, 2016 2:27 am
Ok, well here's a new vid with the amp going. Please see vid:
(https://youtu.be/4pRD8DSALso).
I did not mention in the video that I put in 0.68 uf 160 volt miniwatt caps on the board. It definitely made a difference in they way the amp sounded. It made the amp a lot more warm sounding. They were and are freaky expensive though. Also I used a 43K resistor for the bias adjustment. The 47K just did not give me the trim pot adjustment that I wanted. It was way to far to one side. The 43K gives me more of a middle ground with the trim pot so I can have plenty of adjustment either way cold or hot. I made all the measurements over again when I finished with the new sockets and all the measurements seemed to be right in line with the tolerance chart on the instructions I followed. So that was a happy for sure. (Lesson learned don't use liquid flux on your tube sockets. Even if it's just a tiny little drop). Thanx for the help. And stay tuned I may be back with MV trouble. I hope not!
(https://youtu.be/4pRD8DSALso).
I did not mention in the video that I put in 0.68 uf 160 volt miniwatt caps on the board. It definitely made a difference in they way the amp sounded. It made the amp a lot more warm sounding. They were and are freaky expensive though. Also I used a 43K resistor for the bias adjustment. The 47K just did not give me the trim pot adjustment that I wanted. It was way to far to one side. The 43K gives me more of a middle ground with the trim pot so I can have plenty of adjustment either way cold or hot. I made all the measurements over again when I finished with the new sockets and all the measurements seemed to be right in line with the tolerance chart on the instructions I followed. So that was a happy for sure. (Lesson learned don't use liquid flux on your tube sockets. Even if it's just a tiny little drop). Thanx for the help. And stay tuned I may be back with MV trouble. I hope not!