Name: Steve Kennedy
Email: steve@pacair.com
Subject: 212-HD 130 one last question
Thread: 77
Time: Thu, 10 May 2001 02:26:48 GMT
If you have never had the amp biased, the method that guarantees the fewest hassles in the future is:
Find a tube you like. If it is graded (like Groove Tubes are) settle on a "hardness factor" to stick with.
Buy these tubes in matched quads even if you only use two at a time (although in your case, you will use a matched quad).
Have the amp biased for this set of tubes.
In the future, if new output tubes are required, then buy only the same tubes with the same "hardness" rating. This will ensure that your bias requirements will not change, so you shouldn't have to readjust anything.
Of course, with a Music Man amplifier you might just get a decade out of a quality set of output tubes unless you play it ALOT and loud all the time!
Biasing the tubes allows you to KNOW that your tubes are being operated at their optimum point with no excess distortion or heat generated.
Steve