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Troubleshooting
The VC-12 doesn’t turn on when I turn
on the connected device?
• Make sure that your Valvetronix amp or
VOX BUS-compatible device is connected
to the VC-12’s VOX BUS MAIN connector.
(The VC-12 cannot receive power via the
VOX BUS SUB connector.)
• Make sure that the connected device is
working properly.
• Check the connecting cable for damage.
My amp produces no sound?
• Make sure that your guitar is connected
correctly.
• Make sure that the volume controls on
your guitar are not turned off.
• Make sure that the VC-12’s built-in tuner is
not set for silent tuning.
• Make sure that the Volume pedal is not
fully up.
• Check your guitar cable.
Can’t turn effects on or off from the
VC-12?
• On the connected device, make sure that
the effects section is not turned off, and
check its settings.
• Make sure that the connected device’s
effects loop is not bypassed.
The Expression pedal doesn’t work?
• On the connected device, make sure that
an effect is selected in the Pedal effect
section.
• If you are using a Valvetronix amp, to
control a Modulation effect, the amp’s [EX
CTL] switch must be set to ON.
The Expression pedal or Volume pedal
doesn’t respond properly?
• If the settings of the VC-12 and connected
device seem OK, try calibrating the pedal.
Specifications
BANK display: 8-segment LED x 2
LEDs: 14 (7 switch LEDs, 7 tuner LEDs)
Controls: Expression pedal
Volume pedal
RECALL switch
Effect switches 1–4
CHANNEL–FX ON/OFF switch
BANK UP/DOWN switches
TAP switch
TUNER switch
Connectors: VOX BUS MAIN connector
VOX BUS SUB connector
Power: Supplied via VOX BUS MAIN connector
Dimensions (W x D x H): 710 x 244 x 76–111 mm /
27.95” x 9.61” x 2.99”–4.37”
Weight: 5.6 kgs. / 12.35 lbs.
Included items: VOX BUS cable (10 meter
CAT5 10Base-T “straight” cable with secure
latching system), Carrying bag
Specifications and appearance subject to
change without notice.