FEED
(RAMP)
VOLUME MIX
MIDI CONFIGURATION
Wombtone mkII allows all of its parameters to be controlled via control change messages, it’s presets to be saved and recalled
with program change messages, and its tempo controlled with MIDI clock messages.
To use MIDI with your Wombtone mkII, you’ll have to do the following:
1. Attach a Chase Bliss Audio Modied Empress Midibox “Ring Active” port using a standard ¼” TRS patch cable to the TAP/MIDI
jack on your Wombtone mkII. The Midibox is not included with the Wombtone mkII. If you do not have a modied Empress Midibox,
but a standard one from Empress, you need to use a custom TRS cable that ips the tip and the ring.
See chaseblissaudio.com to purchase these items.
2. Wombtone is set to MIDI channel 6 by default, but it is easy to change if you need to. If you want to change it, simply hold down
both stomp switches when you provide power to the pedal (hold down TAP and BYPASS switches simultaneously) and then you can
let go. The pedal is now looking for the rst “Program Change” message it sees, and it will set itself to whatever channel it gets that
rst message from, permanently (until you change it again).
Recalling a preset via MIDI
You can activate a preset by sending a MIDI Program Change message. For example, sending a Program Change message of 1
activates preset 1. There are 122 total preset slots available. Slots 1 and 2 are the presets that can be saved and activated directly
from the pedal via the preset toggle. Slot 1 is the right slot, Slot 2 is the left slot. Sending a Program Change message of 0 puts the
pedal in “Live” mode which is identical to when the preset toggle switch is in the middle position, in normal pedal operation. If you
do not save something into presets 3 through 122, nothing will be recalled. There are no factory presets besides the two that come
loaded in slots 1 and 2. The idea is for you to create your own.
MIDI CONTROL CHANGE CHANNELS
Parameter CC# Description
Feed
Volume
Mix
Rate
Depth
Form
Ramp
Midi
Note
Divisions
Midi
Clock
Ignore
Tap
Switch
Expression 100
14
Sending a value 0 would be equivalent to the
knob Volume being completely counter clock-
15
wise, sending 127 is equivalent to fully clock-wise.
16
All numbers in between correspond to knob
17
positions in between those extremes.
18
19
20
Sending value 0 sets divisions for whole notes,
21
1 for half notes, 2 for quarter note triplets, 3
for quarter notes, 4 for eighth notes, and 5 for
sixteenth notes.
Sending a value of 0 causes the pedal to ignore
51
MIDI Clock messages. Sending a value of
127 causes the pedal to listen for MIDI Clock
messages. (by default, the pedal listens for MIDI
Clock messages)
You can send any value with this CC#, it will
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simulate pressing down the tap switch. It’s a way
to set tap tempo via midi.
Sending a value 0 would be equivalent to an
expression pedal being completely “off”, sending
127 is equivalent to a fully depressed expression
pedal. All numbers in between correspond to
knob positions in between those extremes. As
always, the dip switches on the pedal select which
parameter(s) are being controlled via expression
Saving a preset via MIDI
You save a preset by sending a MIDI Program Change message
while holding down both the TAP and BYPASS stomp switches.
For example, sending a Program Change message of 45 while
holding down both the TAP and BYPASS stomp switches will save
your current settings to preset 45. There are 122 total slots. Slots 1
and 2 are the presets that can be saved and activated directly from
the pedal via the preset toggle. Slot 1 is the right slot, Slot 2 is
the left slot.
MIDI Clock (aka MIDI Beat Clock)
Wombtone mkII will respond to MIDI Clock messages. MIDI
Clock species quarter notes, subdivided into 24 MIDI Messages.
By using the tap selection toggle, you can select different types of
notes so that they correspond to 1 period of phasers’s waveform.
On the tap division toggle rst bank: 1 = whole note, 2 = half
note, 4 = quarter. On the tap division toggle second bank: 3 =
quarter note triplet, 6 = eighth, and 8 = sixteenth note.
Control Change Messages
Wombtone mkII can be controlled with MIDI control
change messages.
The table on the left shows which MIDI control change channel controls
each Wombtone mkII parameter.
Bypass
Switch
Sending a value of 127 engages the pedal,
102
sending a value of 0 bypasses the pedal.
Furthermore, sending a value of 127 with the
pedal already engaged will reset any ramping
that is happening, if any ramping is happening.
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