Vintage Synth Lab D-ENV

Delayed Envelope Generator

The D-ENV is a 10hp Eurorack Envelope Generator with the addition of Delay and Hold functions for gates. As a "utility-effect" of sorts, it allows for delayed dynamics, which can provide more spacial or dimensional sounds within many configurations, including drum beat delays, or part of an echoic soundscape. Exponential envelope generator (ADSR / AR) with independent delayed gate / trigger processing (up to 1 second), and delay-hold (up to 1 second).

3 Env timing ranges (Short timing fixed range. Long timing can be extended for Extended-Long timing.)
CV to Delay time
Delay + Hold for Gate/Trigger Delays

Delayed Gate/Trigger can be routed internally at the push of a switch, and is "OR'd" with any income gates or triggers entering the envelope generator's gate and trigger input jacks.

Delayed gates only accept new gate signals once the entire Delay and Hold cycles are complete. Delay cycle starts once a signal at the D-G IN jack is received (rising edge -or- positive-going). Both the Delay and Hold cycles are minimum 12 ms, and maximum 1050 ms, each, and are sequenced from Delay to Hold.

D-ENV Quickstart Guide

All Specifications Subject to Change Without Notice 

Size: 10hp
Depth: 35mm

Power requirements:
+12V = 61mA
-12V = 32mA

AR/ADSR type
Analog, Exponential
Envelope Timing (subject to tolerances of +/- 20%
)SHORT time mode:
Attack at minimum = 800 µs (0.8 ms)
Attack at maximum = 1.9 s,
Release at mimimm = 1 ms
Release at maximum = 4.5 s

LONG time mode:
Attack at maximum = 30 s
Release at maximum = 60 s

EXTENDED LONG time mode: (jumper option selected on rear of PCB as header “P2”)
Attack at maximum = 64 s,
Release at maximum = 180 s

Delay & Hold (Delay Pulse Processor)
DELAY Timing (for both Gate & Trigger)
Min Delay Time = 12 ms
Max Delay Time = 1050 ms

Delayed Gate Width (HOLD) Timing
Min Delayed Gate width = 12 ms
Max Delayed Gate width = 1050 ms

Delayed Trigger Width Timing
Delay Trigger Out (fixed) = 525 µs
CV to Delay (via D-TIME input jack)
Exponential response to linear CV in either “U” (+ Unipolar), or “B” (Bipolar) mode
Unipolar mode: 0v to +5V (jumper option selected on rear of PCB as header “P3 & P4”)
Bipolar mode: -5v to +5V (jumper option selected on rear of PCB as header “P3 & P4”)
Positive going CV increases delay-time