SWITCHES AND INDICATORS
POWER: OFF / ON
This switch supplies power from the A.C. mains and is used to turn the amplifier
off
and
on
as well as the
switched
A.C. outlet at the rear of the amplifier. The amplifier
on
status is indicated by the illumination of
the
"MATCHLESS"
logo on the front of
the
amplifier. All vacuum tube heaters are energized when this switch is activated.
CAUTION:
Due to the demands of
class A operation and to prolong tube life, it is
recommended that the amplifier
Power
switch be turned on first. Allow the heaters to
warm up and stabilize for at least a minute before activating the amplifier with the
Stand-by
switch. It is not recommended to turn the power and stand-by switches on
simultaneously.
STAND-BY:
This switch serves as a mute for the amplifier, and is useful when changing or
unplugging guitar cords or taking breaks, especially if volume control settings are to be
set and left. Additionally, the
stand-by
mode allows the amplifier to cool down, extending
the life of
the output tubes. Substantial amounts of
current flow through the output tubes
whenever the amplifier is
operational,
even with
no signal from an instrument!
A
stand-by status indicator is located on the front panel. The stand-by indicator lamp can
be wired to illuminate for either state,
stand-by
or
operate.
All MATCHLESS amplifiers
come from the factory wired to indicate the
operate
mode.
PRECAUTION! Cathode biased
Class A
amplifiers do not like to "idle" for prolonged
periods These amplifiers draw more current idling than they do while being played
Use the
stand-by
mode or turn the amplifier if you not going to play for a while.
Save your tubes!
SPEAKER PHASE SWITCH
All amplifiers manufactured after November 1993 incorporate a "Speaker Phase" reversal
switch at the rear
of
the amplifier. This switch serves as a means to reverse the electrical
polarity of the speaker system. Reversing the motion of the speakers can influence clean
and distorted sound, especially if a direct signal is taken from the guitar and "mixed" with
a miked amp.
If two amplifiers are used in stereo, reversing the speaker polarity of one
amplifier creates a whole new tone dimension.
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