Source
r/GuitarAmps•
RaspberryFirehawk

Do I really need to rebias my DSL 2000 amp after re-tubing?

Hey folks, I'm thinking of retubing my DSL 2000 (early 2000s version) with a set of tubes like this: Tubes by Amp | TubeDepot.com I just want to swap them out and go. Do I really need to rebias the tubes? Will it be a problem if I dont? I dont care if it changes the tone a little bit, I'm more interested in reliability, major issues like damaging the amp. Thanks!

Posted Mar 25, 2021, 3:50 PM UTC

15
SirCarrington•

If the bias is way off, it either won't sound right (too cold) or you'll burn out your tubes really quick (too hot).

If you're replacing it with the same tubes you might be fine for a gig. I don't like doing it, but I have swapped power tubes mid show before. Fix it as soon as you can.

2
kasakka1•

Yes you need to rebias. It's very easy and safe to do on the JCM2000 though.

2
RaspberryFirehawkOP•

Do you know what the right bias is for that amp by any chance?

1
kasakka1•

See this: http://www.sidener.com/amps/jcm2000bias.html

1
marcelkroust•

If you like the sound and the tubes are not red plating after playing for several hours (check in the dark, the metal outside part inside of the tube must not be glowing at all), then that's OK.

Now you can hang me on the public place.

1