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STEP 7
A) Set the Master volume and all channel
Volumes to “0”.
B) Unplug your guitar cord from the input of
the amp.
NOTE: If you have signal going through
the amp, it will not be the true reading
when you set the bias.
STEP 8
Plug in AC Cord.
*Make sure the rear AC switch is set for
the voltage in your area.*
NOTE: Sometimes when the AC Cord is
new it does not want to go in all the way.
Push firmly to force it in, if that is the
case.
STEP 9
Turn the Power Switch ON.
Wait at least 15 seconds, then turn the
Standby Switch to RUN (ON).
Allow 2 minutes for the amp to warm up.
During this time you can set up your Meter
to measure the current (mA) DC.
15secs. > RUN
CAUTION: The tubes get very hot! Don’t touch them, you will burn your skin
if you do.
IMPORTANT: During biasing and normal amp operation if there is a burning smell
or loud crackling noise that comes from the speaker, you should turn off the amp as
the amp may have a bad tube. The tubes should never glow RED on the gray plate
material, the largest metal part inside the tube. This indicates a major problem and
extremely unsafe condition. If this happens turn off the amp immediately!
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