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TONE CONTROLS
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Again the tone controls are all passive and interactive.
TREBLE, MIDDLE and BASS all work in the conventional way,with the operating
frequencies specifically set for mainly overdriven tones.
The pull VOICING takes out more of the mid range frequencies for the popular
scooped middle sound.
LEVEL
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This control sets the overall output level for Channel 3.
MASTER CONTROLS
REVERB (combo version only)
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A single control is provided to set the level of reverb on all 3 channels. The effect is
produced by a three spring reverb tray in the bottom of the cabinet.
PRESENCE
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This works as a tone control in the feedback loop of the power stage in the conven-
tional manner. Therefore it controls the overall brightness of the amplifier. It is interac-
tive with the OUTPUT DAMPING control, the further clockwise the OUTPUT DAMP-
ING is set the less effect the PRESENCE control will have (see below).
MASTER
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This controls the level of signal sent to the power stage and consequently the overall
volume of the amplifier.
STANDBY/ON SWITCH
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As the name implies, this switches the amplifier from STANDBY mode, where only the
valve heaters and relay circuits are on, to ON for actual use. This should be used
correctly every time the unit is used to prevent problems with valves and increase
their life.
Before the POWER is switched on (rear panel), make sure the STANDBY switch is in
the standby position. After switching the power on, wait at least 30 seconds before
switching from standby to on. This will ensure that the valves have time to warm up
before large voltages are applied to the plates. During short breaks the amplifier can
be switched to standby and will therefore be ready to play when next needed.
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