Disconnect input gear and always leave speakers connected when biasing. If it hasn't been biased by you in the past or if you've changed any tubes, back off the bias screws just an 1/8 of a turn or so (counter clockwise) when you power it up and let it warm up for 5 minutes.
You'll need to look on the web to see what the bias setting is for that amp.
I set the bias after 5 minutes and check it again after 15 minutes and then again after an hour if the amp has been idle for long periods or if I've changed output tubes.
You'll need to look on the web to see what the bias setting is for that amp.
I set the bias after 5 minutes and check it again after 15 minutes and then again after an hour if the amp has been idle for long periods or if I've changed output tubes.