Welcome to Solid State Guitar Amp Forum | DIY Guitar Amplifiers. Please login or sign up.

October 15, 2024, 10:05:29 AM

Login with username, password and session length

Recent Posts

 

new tubes know bias

Started by yamahajohn, July 31, 2016, 09:51:06 PM

Previous topic - Next topic

yamahajohn

i have a 1482 silvertone and a premier 100r and a electromuse a46 if i put new tubes in them all clean and spray out the sockets will it hert anything or or smoke make poping sounds i did not see any pots to ajust a bias either i have know schematics for them or information is limited on  internet plus i just want to see if there any bad tubes they were so cheap off of amazon lol,thanks

Enzo

Silvertone 1482 is cathode biased, so there is no adjustment, it makes its own bias.
http://bmamps.com/Schematics/Silvertone/silvertone1482.pdf

Premier 120R is also cathode biased, and if it is like the 100R, the same applies.
http://bmamps.com/Schematics/Premier/Premier_120r.pdf

I have nothing on Electromuse A46, but I did find one from that brand, a small single ended amp which is also cathode biased.
http://bmamps.com/Schematics/Miscellaneous/electromuse_3.pdf

yamahajohn