Operation Manual

SVT-3 PRO Bass Guitar Amplifier
6
11. TREBLE: Use this to adjust the high
frequency level of the amplifier. This
provides up to 14 dB of boost, or 19
dB of cut at 5 kHz. The high frequency
output is flat at the center position.
12. MASTER: Use this to control the
overall output level. Use it wisely and
turn it down when making connections
or trying something new.
13. TUBE GAIN: The tube gain control
varies the high voltage supply to the
preamp tubes. This allows a variety of
tonal response characteristics from
the power amp and replaces the limiter
found on typical solid state power amps.
At “10” the voltage is at maximum,
providing a dynamic, highly responsive
tone. At “0” the voltage is at minimum,
offering a thickened, more compressed
tone. This tone may also be distorted,
depending on volume level. In between
settings are best for preventing harsh
distortion when driving the power amp
to its limits. The effect of this control
increases from moderate to dramatic
as the power amp is driven harder.
NOTE: When adjusting the tube gain control
from “10” to “0” rapidly, a low frequency
hum and muting of the output signal
occur simultaneously. This is due to
shifting of the DC bias point of the tubes
and is no cause for concern. Adjusting
the control quickly from “0” to “10”
brings a moderate delay due to the
power supply capacitors charging.
14. MUTE: Press this switch in to mute
all outputs except the tuner out. The
footswitch may also control muting if
the mute switch on the front panel is
left in the “out” position. (The front panel
switch is still active with the footswitch
connected. This is excellent for tuning
your bass with an electric tuner without
having to adjust any levels to turn down
the sound). The peak/mute LED will
illuminate when this switch is engaged.
15. GRAPHIC EQ: When this switch is
engaged, the 9-band graphic EQ is
enabled. A footswitch overrides this
switch.
The Front Panel continued
0
+12dB
-12dB
LEVEL
+8dB
-10dB
MUTE
EQ
PEAK /
MUTE
BRT
-15dB
HI
LO
zHk9zH33 5kHz2kHz900Hz600Hz300Hz150Hz80Hz
ON
POWER
ON
MASTER TUBE GAINTREBLEFREQUENCYMIDRANGEBASSGAININPUT
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