Month: January 2022
ROGER MAYER: RM58 Limiter, Schematic
I saw this pop-up in a GroupDIY audio forum and thought it looked interesting. It’s a FET based limiter from Roger Mayer that he designed way back in the day, and is still in production in various forms at the moment. There’s also a version posted where someone redesigned it using TL074 quad opamps, which much be a more practical endeavour considering the … Read more
EarthQuaker Devices Levitation Reverb
Feeling much better today so I was able to do some layouts. Thanks for all the kind posts and email I’ve recieved! It really helped keeping the spirit up! First up is another EQD circuit, a quite tweakable reverb. Schematic is avaiable HERE.
EARTHQUAKER DEVICES: Hizumitas Fuzz Sustainar
The Earthquaker Devices Hizumitas is basically the same as the Elk Sustainar, but with a 3n3 cap instead of a 330pf cap in the tone control (specifically the high pass filter). There are some other minor differences, but the 3n3 is probably the biggest factor in terms of sound. Even though the EQD Hizumitas … Read more
Earthquaker Hizumitas
From the source: The Hizumitas was designed for the one and only guitar sorceress, Wata, from the legendary band, Boris! We could not be more excited to have the honor of working with such an iconic legend known for her crushing riffs and mind-melting leads. The Hizumitas is a faithful sonic recreation of her go-to … Read more
Catalinbread Karma Suture
Catalinbread has released two versions of the Karma Suture, one germanium and one silicon based. Both at their hearts are simply a modified Harmonic Percolator. I think Catalinbread described it best on their site: A bubbling cauldron of even-order harmonics! The only change I made in the layout from the schematic is I added a … Read more
FAL Treble Boosters
Found these posted by the one and only pinkjimiphoton on the usual places. Both are very old and rare always on fixed treble boosters. Should be quick fun small builds. You can easily make them NPN by flipping the electrolytic caps, power and ground connections. I believe low gain transistors will work fine in them. … Read more