Runner DIY - Dual VC Crossfader/Panner/VCA/LFO
Runner DIY - Dual VC Crossfader/Panner/VCA/LFO
This is the DIY version of the Mehr Music Machines - Crossfaded [Dual Xfader/Panner/LFO/VCA]
This kit ships with a partially assembled PCB. All Surface mount components are pre-soldered. Buyer must have prior experience with soldering/assembly. This kit is "upper-easy-intermediate", Voltage regulators, diodes, IC, and power header must be soldered correctly.
All parts necessary to build a complete module are included. Everything has been sourced. The kit includes the following components:
1x Partially assembled PCB
1x front panel [Black or white]
6x Potentiometers
12x Audio jacks
2x Blue LED
2x Red LED
1x14 pin IC socket
1x VCA IC
2x Trimmer potentiometers
1x L78L05
1x L79L05
2x Slide SPDT switches
4x Diodes
1x Shrouded box header
1x Ribbon cable
4x Screws
Instructions will be provided upon purchase.
Crossfaded is 14HP VCA-core utility for Eurorack Modular Synthesizers
let me start by saying this: the size of this module 14HP is intentional. it’s not because I couldn’t make it smaller. I could’ve. actually, I did make a smaller version but the playing experience was simply not as awesome. Not all modules need big knobs and extra panel space, but some do. this is one of those modules.
Demo here:
https://www.youtube.com/watch?v=KTCfYVEW8nU
Features: Dual 2-channel crossfader/panner VCA
CV control over pan/fade
Built in LFO with two shapes: Swirl (triangle) & Bounce (square)
Dedicated LFO output
Each of the two crossfader sections has 2-input and 2-output. When using both signal inputs the output signal will present the opposing input signal. For example: Signal input 1A fades between outputs B to A. While simultaneously the opposite is true; Signal input 1B fades between outputs A to B.
When only one input is used the outputs can be patched to a mixer's left + right channels for a classic "Auto-Pan" effect. Adjust the LFO's rate and depth to taste.
VCA mode: for a classic VCA, patch a signal into either section's input, and utilize a single output. You now have a smooth linear.
The CV knob determines the depth of the control voltage's effect on the crossfader. With no external CV patched in, the CV knob will control the depth of the on-board LFO. Patching an external CV overrides the LFO. However, the LFO can still be used independently via its output.
To offset/adjust the zero point for CV control, each section has a trimmer potentiometer on the back of the PCB.
Patch Ideas:
Patch channel 1's LFO into IN1A
Patch channel 2's LFO into IN1B
Choose different rates for each LFO,
Patch Out 1A to a filter (Poodleface?) cutoff
Manually use the crossfade knob to scan between the two LFO's
This creates interesting combinations and time-warping modulations.