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The Volcano
operates in either of two modes, Locally or through MIDI,
selectable by internal switches. In local mode, the user
can select 1 or 15 programs using the switches and needs only an
expression pedal attached to operate. The programs select
various volume ranges such as Mute to 0dB or Mute to +18dB and
so on. Several Volcanoes can be connected together in
local mode using MIDI cables and all units attached will follow
exactly the sweep of the first unit in the chain. This is
a great way to control the gain of several amps connected to
your guitar using only a single expression pedal with no MIDI
required.
When a MIDI controller is attached to the
Volcano the number of available programs increases to 128.
Using Program Change messages you can select any fixed gain from
MUTE to +18dB in 2dB increments, or a wide variety of sweep gain
ranges allowing the user to select both wide and more limited
ranges with various starting and ending gains when the pedals
are moved. Additional programs are available for panning
(when using 2 units together), incrementing and decrementing
gains by 3, 6, 9, and 12dB at a time which can be applied to
both fixed gains or to the end gain of a sweep range.
There are also commands to transmit various CC commands out the
MIDI port under expression pedal control, and additional
commands to apply 1 of 7 available custom curves to the
currently selected range.
Additionally the unit will also respond to
MIDI CC on/off commands to mute, bypass, turn on omni mode, and
to add 3, 6, and 12dB of gain additively using up to 15
switches. The units sweep function responds to MIDI CC #0.
SPECIFICATIONS:
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Gain range |
90dB |
|
Gain (line setting) |
-84dB to +6dB |
|
Gain (instrument setting) |
-72dB to +18dB |
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Pedal resolution |
.375dB |
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Maximum input level (line
setting) |
15dBu (12V p/p) |
|
Maximum input level
(instrument setting) |
3dBu (3Vp/p) |
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Maximum output level (both
settings) |
15dBu (12V p/p) |
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Gain element |
dual (differential) resistor
array |
|
I/O |
MIDI in, MIDI out/thru, power
jack, 1/4" audio in, audio out, expression pedal input |
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Peak indication |
-3dB (yellow) and max (red) on
both input and output |
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MIDI for sweep control |
Control Change #0 on any
channel (channel set by switch) |
|
Additional MIDI |
Fixed gains and gain ranges
selected by Program messages. Modifications (boost, mute,
bypass, etc.) selected by Control Change messages |
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Master/Slave mode |
Link by MIDI cable using
proprietary high speed message |
|
Expression pedal input |
TRS (stereo jack) with wiper
on the ring |
|
Power |
9VDC @ 100ma 2.1mm center
positive |
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Dimensions |
4.6" X 2.7" X 1.1" (116mm X
69mm X 28mm) |
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Weight |
7 ounces (200 grams) Shipping
weight 1 lb. |
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