8
TUBE 50/100 - MANUAL
MIDI LEARN: Installation of the MSM-1 MIDI Module is a prerequisite
for MIDI capability. After installation, the STAGEBOARD switching func-
tions can be executed via MIDI Program Change messages. Pressing the
MIDI LEARN button will save the current switch settings.
PRESENCE: This pot determines the overtone content in the
signal and the aggressiveness of the tone. Note that when you
turn the POWER pot down, the overtone spectrum is more pro-
nounced. Consequently, these pots work interactively - so you
have more control over the sound spectrum at all volume
levels.
REVERB BUTTON: Press this button to activate the
REVERB section. The REVERB circuit remains active for as
long as this button on the front panel is in the "ON" posi-
tion. If you wish to use the Stageboard to switch Reverb
on and off (with switch „3“), you must leave the front
panel Reverb button set to "OFF".
REVERB: This pot controls the amount of integrated
reverb added to the signal when the REVERB BUTTON
is in the "ON" position.
FX LOOP BUTTON: With this front panel button pressed in,
the FX LOOP will always be active. If not depressed, its fun-
ction is taken over by switch „3“ on the stageboard.
FX- MIX: Varies from all ‚dry‘ (preamp signal only) to all ‚wet‘
(the FX signal fed from an external effects device to the FX
RETURN JACK), and any combination in between - assuming the
FX Loop has been activated.
STANDBY: The standby switch is self-explanatory, it
mutes the amp during breaks. The power amp tubes
are protected in standby mode. When you turn the
amp back to full power, the tubes are already warm.
MAINS: Power
ON/OFF switch.
POWER AMP: Determines the output power, and thereby the volu-
me, of the TUBE 50 / TUBE 100. In contrast to conventional master
controls, the enhanced overtones and compressive effect of the
TUBE 50 / TUBE 100 power amp section are audible even at low
POWER AMP settings. At the maximum setting, the TUBE 50 /
TUBE 100 operates like any amp without a master control - i.e. the
amount of power amp distortion is determined by the preamp's out-
put signal level.
CHANNEL SELECT: This channel selector switches between CHANNEL 1 and
CHANNEL 2. In combination with the different AMP MODES, you have four diffe-
rent basic sounds available at the touch of a button. This switching function can
also be performed via the Stageboard (Button 2) - provided the button located on
the front panel is in the "OFF" position (CHANNEL).
CHANNEL/AMP MODE SELECT
LEDs: Two illuminated LEDs
indicate AMP MODE B is
active, a single iluminated LED
indicates AMP MODE A is
active. The yellow LEDs indica-
te CHANNEL 1 is active, the red
LEDs indicate CHANNEL 2 is
active.
CHANNEL 2 GAIN: Effectively determines the
degree of distortion for both AMP MODES in
CHANNEL 2.
CHANNEL 2 MASTER: Determines the volu-
me for both AMP MODES in CHANNEL 2.
EQ SECTION: Common BASS, MID and TREBLE tone controls for CHAN-
NEL 2. Here too, MID and TREBLE influence each other for the widest pos-
sible range of subtle tonal variations.
(20 pages)
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