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compressor and enhance control and prior
to the tone section.
Recording Out
– This fully balanced XLR
output allows you to send a post-EQ/pre-
master signal to a recording or sound
reinforcement mixing console. This output
is designed to allow use with phantom
powered systems.
D.I. Level
– Controls the level being sent
from the XLR balanced output jack.
Ground Lift Switch
ground within the balanced output system to
allow you to eliminate excessive noise when
connected to external systems.
AUX In Right /Left -
mono jacks are designed to accept the
stereo signal from an external source such
as a CD or cassette player, drum machine,
synth. module, etc. The stereo signal is
summed prior to the master volume control.
The signal enters the system post the tone
controls. These jacks can also be used to
return a studio cue signal, allowing the
WT-300 to provide you with your own
headphone mix in the studio.
Tuner Out Jack
– This standard ¼ inch
jack is designed to provide a post-tube, pre-
gain signal for connection to a tuner. It can
also be used to provide pre-tone signal to
other devices such as a direct box or
console.
Cooling System
– Your amplifier features
a thermostatically controlled fan, which will
switch on when the internal temperature
reaches 130 degrees F. In low volume
situations (into 8 Ohm loads) the fan may
not come on at all. The system also
features a high temperature thermal safety
system which will activate if the operating
temperature goes above 190 degrees F.
This circuit will turn the system off in the
event of overheating. It will automatically
reset itself as soon as the unit cools down to
a safe operating temperature. Usually it
takes from 2 to 5 minutes before the unit will
begin to operate again. (Note: the D.I. will
continue to operate normally even when the
amplifier is in thermal shut down only the
stage sound will be lost.)
– This switch lifts the
These standard ¼
OPERATING INSTRUCTIONS
MECHANICAL AND THERMAL
ISSUES
– Your amplifier should always be
placed for operation away from sources of
moisture or heat. Care should be taken not
to obstruct the ventilation holes on the top
and sides of the unit. In the event of thermal
shutdown, you should eliminate the cause
of the thermal problem (poor ventilation,
speaker loads lower than 4 ohms)
immediately. The supplied rack ears can be
used to install your amplifier in a
conventional equipment rack for protection
during transportation.
ELECTRICAL CONNECTION
300 requires at least 10 Amps of correctly
wired alternating current for proper
operations.
CONNECTIONS
– All line connections
(everything but the speakers) should be
made with high-quality shielded cables. The
use of speaker cables for line connections
will result in excess noise. Speaker
connections should be made with high-
quality 16 gauge or larger unshielded
speaker cables. We recommend 10 or 12
gauge cables. The use of shielded line or
instrument cables for speaker connections
can damage your amplifier. The speaker
cable should be as short as possible.
TURN ON
– We recommend turning your
system on with the master volume control
set to its minimum position. This will prevent
any unexpected signal from being sent to
your speakers. A crackling sound heard
through the system when it is first turned on
is the result of the tube warming up. This is
normal.
SETTING YOUR LEVEL
of the gain control will ensure the best
signal-to-noise ratio. The Compressor and
EQ Clip indicators are all provided to assist
you in setting your level correctly. You
should begin the process with your master
control set to a low, or off position, and your
tone controls set flat. While playing your
instrument normally, bring the gain control
up until the compressor light winks on the
peaks that result from your strongest normal
attack. This will generally show up most on
– The WT-
– Effective use
4
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