Ampeg HERITAGE SVT-CL - Manual (Page 5)

Heritage SVT-CL Bass Guitar Amplifier
5
The Front Panel
1. 0 dB INPUT: The signal output from a
passive instrument may be connected to
this 1/4" input by means of a shielded
instrument cable.
2. -15 dB INPUT: The signal output from
an active instrument may be connected
to this 1/4” input by means of a shielded
instrument cable.
3. GAIN: This control adjusts the basic
level of signal in the preamp.
4. ULTRA HI: This switch, when engaged,
enhances the amount of high frequency
output by 9 dB at 8 kHz.
5. ULTRA LO: This switch, when engaged,
enhances the amount of low-end output
by 2 dB at 40 Hz and -10 dB cut at
500 Hz.
6. BASS: Use this to adjust the low
frequency level of the amplifier. This
provides up to 12 dB of boost, or
12 dB of cut at 40 Hz. The low
frequency output is flat at the center
position.
7. MIDRANGE: Use this to adjust the
midrange frequency level of the
amplifier. This provides up to 10 dB of
boost, or 20 dB of cut at the selected
frequency [8]. The midrange frequency
output is flat at the center position.
Rotate the control counter-clockwise
for a “contoured” sound (more distant,
less midrange output) or clockwise for a
sound which really cuts through.
8. FREQUENCY: This control allows you to
select the center frequency for the
midrange control, giving you a choice of
five “voices” for the midrange. The
numbers correspond to the following
center frequencies: 1=220 Hz,
2=450 Hz, 3=800 Hz, 4=1.6 kHz,
5=3 kHz.
9. TREBLE: Use this to adjust the high
frequency level of the amplifier. This
provides up to 15 dB of boost, or
20 dB of cut at 4 kHz. The high
frequency output is flat at the center
position.
10. MASTER: Use this to control the
overall output level. It affects the
speaker outputs and the preamp output.
Use it wisely, and turn it down when
making connections or trying something
new.
11. STANDBY/POWER/FAULT INDICATOR
LED: This is a multi-function LED. In
Standby mode, it glows red. In the On
mode (when the high voltage comes on)
it glows green. If it does not turn green
in the On mode, there is no high voltage
present and the unit needs to be
serviced. If the amp detects a fault in
the power tube circuit, the high
voltage is turned off and the LED flashes
between red and green. This usually
indicates a bad power tube. The amp will
remain in this condition until the unit is
turned off.
1
2
3
4
hi
lo
ultra hi / lo
5
master standby
standby/
power/
fault
power treble frequency midrange bass gain
-15dB 0dB
1
2 3 4
hi
lo
ultra hi / lo
5
master standby
standby/
power/
fault
power treble frequency midrange bass gain -15dB 0dB
13 12 11 10 9 8 7 6 5 4 3 2 1
13 12 11 10 9 8 7 6 5 4 3 2 1