Filling out my 4U Serge rack project is a Serge design based Dual Negative Slopes plus Hills and Valleys from Low-Gain Electronics. Of course the original Serge module names were … Read More

This dual Low Pass Gate from Low-Gain continues filling out my 4U rack. Logan Erickson designed this interpretation of the famous Buchla low pass gates. Rummaging in my files, I … Read More

The Mix-Pro (mixer-processor) from Low-Gain Electronics continues my 4U Serge project. The Mix-Pro is a straightforward modular mixer that features three DC-coupled inputs, one of which is invertible. There’s also … Read More

I finished the Slightly Nasty Model 2251 Multiband Filter, the third Slightly Nasty module for my 4U Serge project. Of the three, this module was the easiest to build, due … Read More

I’ve finished building the Slightly Nasty Model 2331 Asymmetric Slew Limiter. Here I’ll describe the build and show scope photos of the various operating modes. Features The ASL is another … Read More

I wish I had never sold it! I built this great VCO into MOTM format so early on that it preceded this website. You can still buy a VCO 2100 … Read More

Assembly is complete for the Slightly Nasty Model 1011 Discrete Oscillator. In this post I’ll describe the build, providing a few specific part numbers used, and give a couple of … Read More

I scored this very cool VC SLEW LIMIT/LOCK module from Hale for my 4U Serge project. The VC SLEW LIMIT/LOCK is a dual channel, dual mode module that can accurately … Read More

It’s alive! The Fyrall board is assembled, with some of the modifications I discussed previously. I’m still working out the the panel design. The panel has to come last, because … Read More

These just arrived in the mail from Australia. Three Slightly Nasty DIY module panels and PCBs! These begin my 4U Loudest Warning format modular project. They’ll be going into this … Read More