Lead; Exit; Buzz; Notch - Mackie hotwire VT12 Owner's Manual

26. LEAD

Selects the Lead channel preset stored in the current
bank. Rotate the Select/Adjust Knob [22] to choose
another bank, then press the Clean button to select it.

27. EXIT

Press this button to return to the VT12's top-level
state. This provides a quick way to get back to the top
level during or after editing a parameter.

28. BUZZ

Press this button to activate a buzz feature to reduce
hum and buzz from a noisy source like single-coil pick-
ups. The buzz feature has an adaptive threshold that
automatically adjusts to the amount of hum or buzz that
is present in the signal.
To set the threshold for the Buzz feature:
1. Turn your guitar's volume all the way up while mut-
ing the strings with your fretting hand.
2. With the strings still muted, press the Buzz button
to activate the feature (the word BUZZ above the
button lights).
3. The threshold is now optimized for the noise level
of your guitar.
You can also edit the threshold, release time, and
reduction level of the Buzz feature manually by pressing
and holding the Buzz button. The following parameters
are available in the display for editing:
Threshold: –60 dB to +20 dB, in 0.1 dB steps.
Release: 50 to 3000 ms, in variable steps.
Reduction: Low, Medium, or High (amount of attenua-
tion).
02
Silver
Surfer
CLEAN CRUNCH OVERDRIVE
CHANNEL
BUZZ

NOTCH

SPEAKER

MIC COMP CLICK
14
hotwire VT1
MODE SWITCHING TUBE AMPLIFIER
BY
LEAD
EXIT 8
4
2

SAVE

1
TUNER TOOLS
29. NOTCH
This button activates a notch filter to reduce feedback
from a microphone or acoustic guitar. The notch filter
has an adaptive frequency detection circuit that deter-
mines the feedback frequency and provides an improve-
ment in gain-before-feedback by up to 6 dB.
To set the frequency of the Notch filter:
1. Turn the volume up on the source (microphone or
acoustic guitar) and/or the amplifier until it begins
to feedback.
2. Press the Notch button to activate the filter (the
word NOTCH above the button lights).
3. The filter automatically determines the offending
frequency and reduces the gain at that frequency.
30. SPEAKER
This switch toggles between either the USA or UK
speaker voicing (denoted by U.S. and U.K. flags, respec-
tively). The LED for the currently active voicing is lit,
but you can change it by pressing this switch. Experi-
ment to find the sound that you like.
31. SAVE
Pressing this button initiates the preset save se-
quence. There are two methods for saving a preset.
1) "Save In Place" – If you've made a few edits on the
fly and would like to quickly overwrite the current
preset with your new settings, simply press and hold
the Save button for a couple of seconds and the
current preset will be overwritten, while retaining
the original bank, channel, and preset name. When
the save sequence is finished, the message "Save
Complete" appears briefly in the display.
2) "Save In A New Location" – If you'd prefer to save
your edited sound in a location other than the current
bank or channel, or with a new name, quickly press
and release the Save button. You will be led through
the following sequence of prompts on the display:
a. "Save To Bank" – use the Select/Adjust knob
beside the display to select the destination bank
number, and then press the knob to move on to:
b. "Save To Channel" – use the Select/Adjust knob
MAINS
16
to select the destination channel, then press the
30
knob to move on to:
60
c. "Save To Name" – use the Select/Adjust knob
120
to select the first letter of the new name. To move
on to the next letter, press the knob. Repeat these
steps until the new name has been created, then
press the Save button once more to complete the
save sequence.