FRONT PANEL FEATURES
TUBE/F.E.T. SWITCH
Selects either the TUBE or F.E.T. preamp.
Generally speaking, TUBE will give a slightly fatter, more colored tone
with slightly more distortion and decreased headroom at high volume
settings. F.E.T. offers the quietest, most accurate and tightest response.
INPUTS
Input 1 is +6db for passive basses and Input 2 is set @ 0db for
active basses. NOTE: Input s are summing, allowing for two instruments
of similar outputs to be successfully summed.
VOLUME
Controls gain through the input preamp(either TUBE or F.E.
T.)
LIMITER
Averages input signal levels to increase headroom and help
prevent excessive speaker bottoming due to large signal transients. The
unique quality of this type of limiter is that it still retains dynamic
response even at high(numerical) settings. Limiting will increase as the
control is moved towards “10”. The associated red LED will indicate
limiter activity on a continuous basis. The Limiter is cancellable via a rear-
panel foot switch jack or by setting the control to “0”.
CONTOUR
Forms a gentle over-all bass response slope across the
most active bass frequencies. This is very useful in compensating for
stage size and room acoustics.
LO
Controls and shelves frequencies in the extreme low-end of the
spectrum of 150 HZ and less.
LO MID
Controls frequencies between 100 HZ and 400 HZ.
MID
Extremely wide-range control of frequencies between 400 HZ and
1500 HZ.
HI
Shelves and controls frequencies of 1500 HZ and higher. NOTE: these
EQ controls are interactive. There is mild reaction between the controls
including some phase shifting. This results in continuously variable
coloration of your tone including aural enhancement.
MASTER
Controls input gain to the power amp section. For best
signal-to-noise ratio set the input volume relatively high and use relatively
lower settings of the Master volume. The Limiter is more active with higher
input settings as well.
EFFECTS MIX
This control mixes the signal at the “Effects In” jack on
the rear panel. Rotating the control towards “EFX” mixes more of the
effect’s sound, while “Dry” mixes more of the pre-effect signal to the
power amp.
POWER
Supplies mains power to the amp. Be certain that the proper
voltage is supplied to the amp. The rated voltage for your unit is indicated
on the rear panel. The green LED is the power indicator.
REAR PANEL FEATURES
VOLTAGE SWITCH
This amp is equipped with a dual voltage
transformer. In the USA always use the 115V position. For Europe use the
230V position and the correct fuse value.
POWER INLET SOCKET
USA:Connect only to 110-120V, 60Hz
receptacle with the detachable power cord supplied. Always use a grounded
outlet to avoid operating problems and to increase safety margin.
FUSE
Use fast-blo 4 amp for 120V US versions or 2 amp for 220-240V
versions. Always replace with the same type and size fuse.
SPEAKERS
Use these jacks for speaker output only. Minimum total
impedance is 4 ohms. Lower impedance operation is not recommended ,
and may eventually overheat and damage the amp.
Note: RMS Power: 130 Watts @ 8 ohms/200 Watts @ 4 ohms.
LINE OUT
Attenuated signal from the output of the amp. All of the tone of
the amp, including the output is available at this jack. Potential applications:
Slaving to another combo or power amp and recording. This output is
isolated from the chassis ground to help prevent ground loops.
LIMITER CANCEL
This jack provides for a simple shorting-type
footswitch operation of the Limiter.
EFFECTS LOOP
This system provides ultimate flexibility and control for
your effects, regardless of type.
Special note for proper use of the effects
loop:
“SEND” with as much level as you can without distorting the effect.
“RECEIVE” with the minimum level possible to reach unity gain with or
without
the effect activated.
PRE EQ/POST LOOP SWITCH
Selects the output mode of the
“Preamp Output” balanced connector. “Pre EQ” setting will send the amplified
preamp output-Volume control output- directly to this connector. The F.E.T. or
Tube will be included in this setting, but no EQ or effects. “Post EQ” setting
will include all front-panel controls include the Effects Loop setting.
DIRECT OUT
True balanced output of the bass signal useful for sending
direct -to- board signals through long snakes. The impedance on both this
and the previous output is less than 200 ohms and completely balanced.
