INTRODUCTION
SPECS
CC
Parameter
7
Level
20
Gain
21
Tone
22
Mix
23
Filter MSB
55
Filter LSB
24
Bit Depth MSB
56
Bit Depth LSB
25
Sample Rate MSB
57
Sample Rate LSB
26
Bank MSB
27
Table MSB
59
Table LSB
28
Settings
Settings Codes:
01
Bypass Effect
02
Enable Effect
11
Tone Off
12
Tone On
17
Dry On
18
Dry Off
21
Sample Rate Normal
22
Sample Rate Fine
31
Bit Depth Post Table
32
Bit Depth Pre Table
33
Bit Depth Mode (Mask
Disable)
34
Bit Mask Mode (Mask
Enable)
35
Full Bit Depth (12 bit w/
no Gate)
41
Morph Off
42
Morph On
50
Randomize
60
Save to Active Preset
70
CV1 Route to Nothing
71
CV1 Route to Gain
72
CV1 Route to Tone
73
CV1 Route to Samples
74
CV1 Route to Bits
75
CV1 Route to Bank
76
CV1 Route to Table
77
CV1 Route to Blend
78
CV1 Route to Filter
80
CV2 Route to Nothing
81
CV2 Route to Gain
82
CV2 Route to Tone
83
CV2 Route to Samples
84
CV2 Route to Bits
85
CV2 Route to Bank
86
CV2 Route to Table
87
CV2 Route to Blend
88
CV2 Route to Filter
MIDI PARAMETERS
Power: 9VDC Center Negative (BOSS Standard), 150mA draw
Input Impedance: 380k
Output Impedance: 1k
MIDI standard input. Channel (1-8) internally selectable
CV Inputs: 0-5V. 50k Impedance.
TS connection
Expression Inputs: 10k-100k linear.
TRS connection
Upgradeable via USB
Relay True Bypass
Dimensions: 5.8” x 4.75” x 2.5”
The Geiger Counter Pro is the final evolution of my bit crusher concept.
We added many features that were impossible before technology caught
up. The Pro edition stays true to the original’s brutality, but refines the
user experience, and extends its capabilities.
The GCP took six years to develop. In 2011 I designed it to have menus
and a bunch of features hidden within, but it was clunky and unpleasant
to operate. So it was shelved for a while, and in 2014 I started again from
scratch. This time I brought every feature to the surface.
Thank you for purchasing the Geiger Counter Pro. I hope that it inspires
you to create music (and noise) that the world has never heard before.
Every feature is accessible via MIDI. Knobs are on their own CC, and set-
tings can be changed by sending a specific value on CC #28. MIDI channel
is set using internal jumpers (see below).
MIDI IMPLEMENTATION
CH. 1
CH. 2
CH. 3
CH. 4
CH. 5
CH. 6
CH. 7
CH. 8
The Geiger Counter Pro responds to Program Change 1-16