User Manual
V-4B Bass Guitar Amplifier
5
The Front Panel
1. 0 dB INPUT: The signal output from a
passive instrument may be connected to
this1/4"inputbymeansofashielded
instrument cable.
2. -15 dB INPUT: The signal output from
an active instrument may be connected
tothis1/4"inputbymeansofashielded
instrument cable.
3. GAIN: This control adjusts the basic
level of signal in the preamp.
4. ULTRA LO: This switch, when engaged
[rightsidedown],enhancestheamount
of low frequency output by 2 dB at
40 Hz and -11 dB cut at 500 Hz.
5. 1•2•3SWITCH: This switch selects
the frequency that will be affected by
themidrangecontrol[8].Theavailable
frequencies are:
Left = 220 Hz
Center = 800 Hz
Right = 3 kHz
6. ULTRAHI: This switch, when engaged
[rightsidedown],enhancestheamount
of high frequency output by 7 dB at
8 kHz.
7. BASS: Use this to adjust the low
frequency level of the amplifier. This
provides up to 13 dB of boost, or
12 dB of cut at 40 Hz. The low
frequency output is flat at the center
position.
8. MIDRANGE: Use this to adjust the
midrange frequency level of the
amplifier. This provides up to 11 dB of
boost, or 21 dB of cut at the selected
frequency[5].Themidrangefrequency
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.
9. TREBLE: Use this to adjust the high
frequency level of the amplifier. This
provides up to 14 dB of boost, or
17 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[16].Useitwisely,andturn
it down when making connections
or trying something new.
STANDBY POWER
MODEL
V-4B
0 dB -15 dB GAIN MASTERMIDRANGE TREBLEBASS
ULTRA LO 800 HZ 3OOO HZ220 HZ ULTRA HI
EQUALIZATION
0
+
01 2 3
+
CUT BOOST
1 2 3 7
4
8
5
9
6
10
11
12 13