ampeg sb12 bias

[jh1129]

anybody have any advice/tips on how to bias this amp (ampeg sb12 portaflex)...i usually use a weber bias rite on my other amps but the tubes on this amp does not fit on the weber ...it uses 7868 tubes ...thanks

[AL30]

First off congratulations on a great amp. I love those little guys.

That amp should have a bias control on it. If the bias rite won't fit you'll need to use another method.

http://www.duncanamps.com/technical/lvbias.html

AL