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OldBlue Modules (archive)

These pages list the current modules designs for the BugBrand system, all made with 4mm banana sockets. Through 2009 batches were released primarily to the 12 or so core system users with occasional external sales, including some in Minijack format. From the beginning of 2010 all current designs are being updated to Rev.2 status - introducing new and more efficient production techniques (Surface mount construction and parallel PCB designs) and adding a few small additions to some modules.
Note - I never even posted several module designs on here! All OldBlue modules show up in ModularGrid.


Product Image Item Name+
PRC1 - PTDelay

PRC1 - PTDelay

The PRC1 is a delay effect with characterful sound using the PT2399 chip under voltage control. The new Rev.2 version not only adds a new Delay...
PRC2 - BugCrusher

PRC2 - BugCrusher

The PRC2 brings the BugCrusher effect to the modular and extends its scope along the way too. BugCrushing is my term for the effect of audio rate...
PRC3A - SV Filter

PRC3A - SV Filter

The PRC3 packs a compact but powerful punch as the BugModular's first resonant filter. It is a State Variable design offering Low/Band/High/Notch...
PRC4 - Dual LPG

PRC4 - Dual LPG

The PRC4 is dual version of the LowPassGate as found in the DD1 - see the DD1 module description for further details. Width: 1 FracUnit Current: +ve...
PRC5 - Wavefolder

PRC5 - Wavefolder

The new PRC5 Wavefolder is a powerful processor which adds overtone harmonics to input waveforms. Typically the Wavefolder is used to add harmonics...
SEQ1 - Sequence Hub

SEQ1 - Sequence Hub

The SEQ1 is the new pulsing heart of the system - an 8-stage CV and gate sequencer with a host of functionality. In combination with the various CLK...
SYN1 - Weevil

SYN1 - Weevil

Now updated to Rev.2 status with increased choas in the starvation. The Weevil heart jumps into the modular world to provide a host of chaotically...
SYN2A - Utility VCO

SYN2A - Utility VCO

The Rev.2 version SYN2A has been renamed Utility VCO (voltage controlled oscillator) - it is a compact but very capable source of oscillations, both...
UTL1 - Dual Preamp

UTL1 - Dual Preamp

The UTL1 Dual Preamp provides a means of introducing external audio signals into the system. Because external signals tend to be of a much lower...
UTL2 - Output Mix

UTL2 - Output Mix

The UTL2 Output Mixer is a simple three channel mono audio mixer designed primarily to act as the system output stage. The input channels are...