
2
1
2
1
NOTCH
EQ
LO
HI
Graphic EQ
V1B
OVERDRIVE
BRIGHT
+HV
VOLUME
LOW CUT
MID / SHIFT
8 OHMS 4 OHMS 2 OHMS
COMPRESSION
V2A
TUBE GAIN
TUBE GAIN
TUBE GAIN
V2B
V3A
V1A
RETURN
SEND
PRE OUT
POWER IN
MASTER
RESONANCE & PRESENCE
V3B
V4B
V4A
V5A
V5B
0dBV LOOP
-10dBV LOOP
INPUT w/15dB PAD
300W(rms)
TUNER SEND
XLR LEVEL
GND LIFT
XLR LINE OUT
XLR PRE/POST
VB-3 FUNCTIONAL BLOCK DIAGRAM
V6, V8, V10, V12
V7, V9, V11, V13
SPEAKER OUTPUTS
2
3
4
1