MATRIXSYNTH: Circuit Slices Eurorack Synthesizer ADSR Envelope Generator


Wednesday, November 06, 2013

Circuit Slices Eurorack Synthesizer ADSR Envelope Generator

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via this auction

This is the first Circuit Slices post. The seller also has a power bus listed here. Details for that captured further below.

"Pre-production units from a company making synthesizer modules in the Eurorack format. This is a new, 4-stage, ADSR module, sold before going to market, with a starting bid well below the retail price (typical prices for other ADSR modules are $75 to $90, or even more). It includes a re-trigger input for multiple triggers -- while the gate input is high. If you don't have a keyboard or MIDI-CV with a trigger output, you can use the ADSR TRIG input for synchronous attacks and modulation effects, triggered by a master clock signal. Envelope generators with trigger inputs, were typical in some older analog synthesizers, such as ARP and EMU.

Specifications
Attack time: 1mS to over 5s
Decay time: 1mS to over 12s
Sustain level: 0 to 10V
Release time: 1mS to over 12s
Output level: 0 to 10V
Gate threshold: 2.5V
Power: +12VDC @ 3mA, -12DC @ 2mA
Panel width: 7 HP (35.24 mm)

"Skiff friendly" Depth: Only 1.4" with power cable (single PCB using SMT parts)

Features
“TRIG” input for re-triggered attacks
Logarithmic potentiometers for A, D, R
High-quality anodized aluminum panel
User selectable 'gate' from power-bus -- using PCB shorting jumper
Low power consumption
Includes power cable and two case screws"


"This is a power bus for a DIY Eurorack synthesizer case. The board has 14 power connectors for standard Eurorack synthesizer modules. All of the 14, high-quality (AMP), connectors are shrouded and keyed so that each module's power is applied correctly (see detail photo). Includes a 5V regulator (7805) for those modules requiring logic power. External power is applied at three "quick-connect" tabs or at a mini terminal strip. Three green LEDs show status of +12V, -12V and +5V. PCB size: 14" x 1.25" Requires an external +/- 12DC supply (+5VDC derived on board)."

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