Inspired by the Coron DS8 drum synthDesigned by Electronic things... and stuff in France
Product revisions 1.0b: Correction of an error on the upper PCB 1.0: initial release (superseded) Front Board Rev. 1.0 contained an error. The square-shaped pad of D4 (cathode) wass in contact with…Read More…
Front Board Rev. 1.0 contained an error.
The square-shaped pad of D4 (cathode) wass in contact with the trace coming from the second pad of D4 (anode). The consequence was that the two pads were connected together, which then prevented the LED to light up.
The DM77 is a Eurorack-compatible Drum Synthesizer, inspired by the classic Coron DS8, with improved characteristics.
It's not a clone. It's a completely redesigned circuit.
The main advantage over the DS8 is the main oscillator being now capable of tracking 1V/Oct for several octaves. Other improvements are:
The DM77 is equipped with a 1V/Octave Saw Core oscillator and a waveform converter to Triangle (slightly adjustable for more harmonics). A second oscillator can do some interesting Frequency Modulations (FM) for metallic sounds. The release/decay potentiometer allows you to set very short or very long sounds. Choose either Trigger or Gate response with the jumper setting. In Gate position, the DM77 can be used as a handy VCO/Synth Voice. The Sweep setting creates that classic disco drum sound.
Listen to the demo sounds: https://soundcloud.com/dhaillant/dm77-various-sounds
The current PCB revision is version 1.0b. Stay in tune for potential updates and mods.
The module is 10HP wide. The front panel is made of PCB material, 1.6 or 2mm thick. It is Matte Black with white or silver silkscreen.
The B-Stock Front panels are either slightly scratched or present some irregularities in the surface finish. They are half the price of the regular front panels.
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I use "La Poste", the French postal service.
Tracking informations on Tracked Shipments are scarce and pretty useless most of the time. For this reason, I recommend the Regular Mail without tracking. Don't waste your money!
If you have any concerns, please contact me.
Juan Carlos | Feb. 19, 2021
Hedi | Sept. 28, 2019
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