View Single Post
Old 17th Apr 2018, 9:10 pm   #13
Boom
Retired Dormant Member
 
Join Date: Jan 2007
Location: Westbury, Wiltshire, UK.
Posts: 2,451
Default Re: Amplifier problem (record player)

Quote:
Originally Posted by Radio Tech View Post
Hello everyone,

I have touched the control grid only to obtain a fairly weak hum even at full volume,
You might well get very little hum from just a UL84. It has very low gain when used like this. I used to rip them out and rebuild the amps using a UCL83 so it had a pre-amp, as a UL84 on its own is so quiet. It isn't hard to do.
Boom is offline