use the channel selector button to put the amp in the green L.E.D channel first, then the
footswitch will operate
11) CHANNEL SELECTOR JACK:
This jack accepts a standard '4 guitar cord (not
supplied) for connection to the footswitch. When hooked up, the footswitch allows you to
change channels arid take advantage of the independent volume, overdrive, tone, and
reverb controls
The Seymour Duncan footswitch L.E D will glow only when you're playing through the
top channel.
Some amps produce a loud 'pop" through their speakers when channel switching The
Convertible amp uses a channel switching circuit built into the preamp that is isolated
from other electronics No annoying pops will occur when changing channels
12) VARIABLE POWER CONTROL:
This control changes the power amplifier current to
reduce or increase power amplifier wattage 100 watt tube amps are great for playing in
large clubs where you need lots of power, but for smaller places, a low powered amp
might be more useful To get amplifier distortion you need to work the power amp section
hard - pushing it beyond its limits With the Convertible amp, you dial in the amount of
power you need from 100 watts down to 5 watts
For the cleanest signal, use all 100 watts and turn the Master Volume control to adjust
loudness. For a distorted sound, turn the Master Volume control pas! 1 o'clock and use
less power. You will get a warm, round distortion that is heard only on small amplifiers
Variable Power is not like typical preamp overdrives. The. Variable Power circuit actually
controls the cutout stage of the amp. When the Master Volume control is set low you will
notice little or no change from the Variable Power control because you are asking the
amp to give you very, little wattage. The higher you set the Master Volume control, the
more you will notice the effect of Variable Power. Experiment to find where you like it
best,
Note:
The full Power range (5 to 100 watts) is available when running the amp in the
Pentode mode (See page 7 for Pentode/Triode switch). Variable Power will control 3 to
60 watts in the Triode mode.
13) VARIABLE POWER JACK:
Use this lack with a
PASSIVE
volume pedal
(100-500k
ohm range) to remotely change Variable Power.
CAUTION:
An active volume pedal (the
type that uses batteries or a c. power) will not work in the circuit.
When you turn up the Variable Power, you not only get the most power available, but
also less distortion from the amp. If you want to change Variable Power while you're
playing, a volume pedal lets you do it easily. Many players like to use all 100 watts while
playing clean rhythm and then use the Variable Power with a volume pedal to reduce the
power and get amplifier distortion for lead work
Variable Power can also be changed with a footswitch. When the footswitch is "off", you
will get all 100 watts. When the footswitch is "on", you will get only 5 watts. When using
the footswitch, the Variable Power Control knob will have no effect. Your only choices
are 100 watts or 5 watts.
