Casio MT-46 with mods

video upload by Ground Grown Circuits

"Demo of the mods I installed on this casiotone mt-46.
Pitch knobs for accompaniment and melody, drum trig i/o, and mutes for accompaniment section."

Casio SK-1 with mod

Note: Auction links are affiliate links for which the site may be compensated.
video upload by Ground Grown Circuits

"This mod lets you use an on-board lfo to switch back and forth between the analog filters on the SK-1.
Available for sale on my Reverb page."

via this listing

"Mod Description:
With the switch up, everything functions as normal.
With the switch down, a square wave LFO is used to switch back and forth between the internal sound filters for the melody, creating a neat tremolo effect. LFO rate is set by the knob."

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Brother Auto-Emillion GX -151 with Mods

video upload by Ground Grown Circuits

"Brother Auto-Emillion GX -151 aka Baldwin Discoverer DS-50 divide down organ with analog rhythm and casiotone style accompaniment.

Mods include rate knobs for several modulation oscillators, Bass output, Rhythm output, and Rhythm clock I/O"

Modded Out Akai Timbre Wolf - The Dire Wolf

video upload by Ground Grown Circuits

"short demo of some of the mods I've done on my Timbre Wolf"

Ground Grown Circuits Angelo Dual VCF

Saw Wave Demo video upload by Ground Grown Circuits

"Short demo of a digital Saw waveform through my Angelo Dual VCF design.
Shows first what a single filter sounds like, then the Mix output, then the B-A output, then both A and B outputs panned hard left and right respectively."

Casio MT-45 with Mods

video upload by Ground Grown Circuits

"Demonstration of the modifications I made to this Casiotone MT-45.
Trigger inputs and outputs for the drums, clock out derived from the arpeggio, mutes, and a sub for the bass."

First sounds from WS-2X

video upload by Ground Grown Circuits

"WS-2X Professional Werkstattion
Built from 2 Moog Werkstatts
Sound direct from headphones port, no external effects"

Casio RZ-1 With Mods

video upload by Ground Grown Circuits

"Sample tone knobs moved to front panel, variable clocks added to the percussion generator ICs, and upgraded ROM chips and firmware.
All stock sounds from upgraded ROM at end on video."

Ground Grown Circuits Moog Minifooger MF Chorus Super Mod

video upload by Ground Grown Circuits

via this auction

"This is a Moog MF Chorus modded and rehoused in light blue hammond enclosure.

Description of mods:

Top left is the Stereo/Mono output switch.

Mix switch replaced with knob to allow finer control of mix settings.

Feedback expanded to allow self oscillation.

Three lower switches, top to bottom: LFO rate switch, LFO shape switch with center off position, and Time range switch to allow for more Flange like sounds.

Required tip negative 9V power supply, not included."

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Ground Grown Circuits Custom Korg Poly-800 Filter and Chorus Mods Demo

Note: Auction links are affiliate links for which the site may be compensated.
video upload by Ground Grown Circuits

via this auction

"This thing is great for dreamy evolving pads, drunk sounding horns, lofi surfing, and 80’s car chases.

The filter is modded to allow free playable control over cutoff and resonance, with a 2 pole/ 4 pole switch installed for more variety.
The chorus has been modded to allow adjustment of the rate, going into audio range for ringmod-like effects, adjustment of depth, and a true mix knob allowing for control between fully dry and fully wet.

There’s an external input, so you can run some audio signals in and override the noise (ext input level follows noise/filter envelope).

The internal battery has been replaced with a battery clip for no-solder battery swaps and a brand new battery has been installed.

All the tact switches have been replaced, so no annoying switch bounces while trying to program a sound.

The instrument is painted to match the green lettering in the programmer menu."

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TINRS Fenix IV Update

An update via This Is Not Rocket Science:

"Fenix IV assembling parts
Six more weeks until Superbooth…

We are working hard on the first Fenix IV prototype and alternate between 'this is madness' and 'this is awesome'. Probably both are true.

All the parts has been tried and tested in Experiment Boards 1, 2 and 3. Everything works and we are happy with our sounds and effects. Now these parts have to make a mythical beast. The CPU plug-in boards and filter voice boards are in the mail. Chips are being ordered. Power, midi and plug board are in-house and partially assembled. The tiny headphone board is ready. Our interconnect board – connecting the modules to the jacks and replaces the wiring harness – will be ordered together with big board. Flying in from all over the world, all the pieces are coming together.

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