Shaped Dual EnvVCA [ShEV]

Dual analog envelope generator, waveshaper, slew limiter, and VCA

The Shaped Dual EnvVCA is a dual analog envelope generator, waveshaper, slew limiter, and VCA. Each of the two channels is identical and they can be used separately or together.

Shaped Dual EnvVCA features:
• Versatile linear, exponential, and logarithmic envelope generator/LFO
• Low-noise, low-distortion, DC-coupled linear VCAs
• Shape slider, CV jack and attenuverters for fading between Exponential, Linear, and Logarithmic
envelope shapes without changing envelope timing
• 100% analog
• Sliders and range switches control Rise and Fall times from ~2ms (500Hz) to ~2 min.
• Time CV jack extends time range: ~400μs (2.5kHz) to ~1 hour.
• Independent attenuverters for Rise and Fall time
• Blue/Red lights indicate strength and polarity
• Cycle buttons for looping envelopes (LFO)
• Trigger input jack and switch for toggling between AR, ASR, and Cycle modes of triggering
• EOR/F (End of Rise/Fall) gate outputs can be used to chain and sequence events
• Env Level and Offset knobs scale and shift ENV output without changing VCA volume
• Audio In and Out jacks for passing audio or CV through the VCA
• VCA CV inputs to use VCAs independently from the envelopes
• VCA gain internally connected to envelope output when VCA CV jack is left unpatched
• Follow input jacks allow for slew limiting, envelope following/sidechaining, ADSR, and exotic
filtering effects
• Re-trig jumpers allow for re-triggering during rise phase

Electrical and Mechanical Specifications:
• 20HP Eurorack format module
• 0.95” (24mm) maximum depth (includes power cable)
• 10-pin Eurorack power header

Power consumption
• +12V: 255mA max
• -12V: 230mA max

Audio/VCA
• 100k input impedance, 1k output impedance, DC-coupled
• VCA gain range: -75dB to +1.0dB, linear response to CV
• VCA unity gain @ 4.4V CV
• Frequency Response: DC to 20kHz, +/-0.1dB

Envelope Times
• Minimum rise or fall time: ~200μs per segment
• Maximum rise or fall time: > 15 minutes (typically > 30 minutes) per segment

Jacks
• Env jack: Min = -10.2V, Max = 10.1V
• Envelope: Max amplitude = 9.3Vpp
• Trigger jack: rising edge threshold = 1.25V
• Follow jack: active range = 0V to +5V
• EO* jacks
• EOR (channel A): 4.50V high gate output
• EOF (channel B): 4.95V high gate output
• Audio In/Out jacks: +10.8V maximum range without clipping

https://4mscompany.com/shapedenv