Yamaha CS20M Programmable Analog Synth SN 2894 with Original Case

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Circuitbenders Introduces DIY Trigger Interface Boards for BENTLEY RHYTHM ACE FR8L / ROLAND TR77

via Circuitbenders

"The Bentley Rhythm Ace FR8L and the Roland TR77 are more or less the same machine. The only differences being that that the PCB's are in different positions, the FR8L doesn't have the tambourine sound found on the TR77 (although the empty spaces for the components are on the board and it can be installed), and the TR77 has a fade out feature along with 3 extra preset patterns.

Internally the sounds are triggered using -12v spikes, instead of the standard +5v pulses used on later machines. This interface board is designed to convert standard +5v trigger pulses supplied from an external source such as a midi to trigger converter, modular synth, drum machine or analogue sequencer, into the correct triggers to drive the FR8L / TR77 voices.

The board has 12 identical trigger conversion channels, plus a trigger input with a pair of outputs to drive the Guiro sound and its associated pitch bend triggering. Whoever designed these machines went to a hell of a lot of effort to trigger the Guiro sound, and then only used it on a couple of the preset patterns!.."

Battery (Powered) Acid

Battery (Powered) Acid from Grain Bastard on Vimeo.

"I got reminded I hadn't put a video up in quite a while so here goes...

A bit of techno/acid on some battery powered devices, the OP-1, PO-12, Volca Sample & TT-303.

I made a backing track on the OP-1 as a guide to trigger pattern changes and also to allow some changes to auto happen. The low bass, pads and some extra percussion is being played on the backing, the PO-12 is on main drum duties (kick etc), Volca is extra percussion & the Bass Bot is doing the acid. I wanted the jam to be good enough for my weekly beats entry this week so the whole lot is mixed down in Cubase.

Have a listen to my weekly tracks at www.weeklybeats.com/grainbastard if you want to hear more :)"

Harmonic Method 1

Published on May 2, 2016 voltlife

"The start of a series of experiments looking at ways to get chords and harmonies out of a modular synth. To start with, here's a straightforward approach based on three analogue VCOs and a manually-tuned three-channel sequencer. However, it's given some added tweaks to bring more harmonic and timbral variety."

Eurorack Module von Dave Rossum (E-mu) @Superbooth 16

Published on May 2, 2016 musotalk

"Dave Rossum hat für E-mu geile Filter entwickelt, die jetzt auch in einem Eurorack Case wiederzufinden sind."

Also see:

Secrets of the E-mu SP 1200 with Creator Dave Rossum @superbooth 16

Bastl TEA KICK: Sound Demo (no talking) #TTNM

Published on May 2, 2016 The Tuesday Night Machines

Overview video posted here.

"No talking, just sounds without any further processing! Of course you should experiment with VCAs, Filters, etc. too!

Features:
- bass drum generator
- Tune knob for adjusting pitch
- CV input with attenuator for Tune
- resonance knob
- resonance range switch (low range limits the circuit from self oscillation)
- click tune knob – adjusts pitch of click added to the drum body
- click output jack – when plugged in it puts the click out of the main output
- buffered output
- square wave output
- trigger input
- wtf input (acts something like band pass filter but not really:)
- trimmer to adjust the resonance range
- handmade in Brno, Czech republic
- front panel from oak wood, handmade custom knobs"

Funky Techno Jam with a Modular Synthesizer on the Balcony

Published on May 1, 2016 TheKraist

"The main synth line are two hard synced squareoscillators (Braids SYNn) while the syncfrequency is modulated by a random source (Wogglebug). The Volca is providing some kicks and claps and the Wasp filter is doing the rest."

Black & Gold ARP Odyssey Mk 1 ORIGINAL Model 2800 Analog Synthesizer with Kenton CV

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"an original Arp Odyssey in black/gold, the model 2800 (Mark 1 with the most coveted model 4023 filter), circa 1974, made in the USA. The synthesizer is in excellent working condition having recently had the following restoration performed locally by thisoldsynth.com:

March 2016: New keyboard bushings installed

March 2016: Sliders disassembled & cleaned

March 2016: Power supply electrolytic capacitors replaced

March 2016: New Kenton CV retrofit installed"

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KORG POLYSIX ANALOG SYNTHESIZER W/ KIWISIX MOD SN 388149

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Korg minilogue sounds by Graal7

Published on May 1, 2016 graal7

"some presets sounds of korg minilogue.

four voices analog polyphonic synthesizer"

KORG minilogues on eBay | Korg minilogues on Amazon