This is a total newbie question, but here it is. When I change the tubes in my 5150 will I have to worry about the bias if I stay with the type of tube that the amp was built for? If I change out the 6L6's in it for say JJ 6L6's then will it just be a standard swap or will it be better to check the bias to make sure that it is still right? Never had to change the tubes myself before so this will be a first time journey for me.


hotrod

You would need to bias it dude. Some dont but you REALLY always should.

Best of luck and welcome to the forum.

CC

_________________
Fender Stratocaster (parts build)
Fender Telecaster 72 Custom RI
Fender Telecoustic Deluxe
Gretsch Electromatic Pro-Jet
Gibson Les Paul Standard Plus
Gibson ES-135
Zenith Type-17
Marshall 70's JMP Superbass 100w
Blackstar HT-5

Which 5150 do you have? How many pre amp tubes?

_________________
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.

Thomas Jefferson

Very early 1st gen Peavey (block number 5150). 5 pre amp tubes, 2 6L6 power tubes.


hotrod

_________________
1983 Gibson Explorer 1 (main axe)
2004 Fender American Standard Stratocaster (Butterscotch on ash 1 piece maple neck and fretboard) (my baby)
2008 BC Rich Assassin neck thru(fun toy)
Peavey 5150 212 combo (early model) FREAKIN CRUNCH MONSTER!

Yep,
Check the bias.

I was wondering because the newer ones have 6 pre amp tubes and adjustable preset bias test points instead of being fixed bias.

_________________
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.

Thomas Jefferson