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‘63 VIBROVERB REAR PANEL FUNCTIONS
FUSE - The fuse is in the AC supply of the amplifier
and will help to protect the amplifier and operator in
the event of an electrical fault. If a fuse blows, it
should only be replaced with a fuse in accordance
with the listing at the fuse holder. If the amplifier
repeatedly blows fuses, it should be checked out by a
qualified technician. UNDER NO CIRCUMSTANCES
should a fuse of a different type, higher current rating,
or a fuse bypass be used, as this could damage the
equipment and present a serious safety hazard.
GROUND SWITCH - The GROUND SWITCH is not
functional, and is there to preserve the original
appearance of the amplifier. The switch is not present
in 100V, 230V, and 240V units.
POWER SWITCH - This switch turns the AC power ON
and OFF. When the switch is OFF, the amplifier is
completely shut down.
STANDBY SWITCH - This switch turns the amplifier on
and off. In the STANDBY position, the amplifier is off;
however, power is applied to the tube filaments so as
to eliminate warm-up time. Use of this feature during
short breaks versus using the POWER SWITCH will
increase tube life.
MAIN SPEAKER JACK - Plug-in connection for speak-
ers. This jack must always be used as the primary
connection to speakers.
EXTERNAL SPEAKER JACK - Plug-in connection for an
external speaker. This jack is wired in parallel with the
MAIN SPEAKER JACK, and must only be used in con-
junction with the MAIN SPEAKER JACK. Should the
EXTERNAL SPEAKER JACK be used without also using
the MAIN SPEAKER JACK, there will be no sound.
Note that the amplifier is optimized for a 4 ohm
speaker load, and that the speakers in the cabinet are
wired for 4 ohms. Should a total load of more or less
than 4 ohms be used, the amplifier will not put out its
maximum power output before distortion occurs.
FOOTSWITCH JACK - Plug-in connection for the
footswitch. The footswitch allows you to turn the
VIBRATO and REVERB features on and off without
having to operate the controls on the front panel.
NOTE: The VIBRATO and REVERB features will oper-
ate without plugging in the footswitch.
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270W