gtfields13
Active member
- Build Rating
This week's Phido Sound new build is the Ohl Junction, based upon the Marshall Guv'nor, using the PedalPCB Guvernator PCB.
I finished this a week ago, but was imagining that I might put together a demo for the sound. Given that my guitar playing is not that exciting, and this pedal isn't really a fantastic synth effect, I am going to pass for the moment.
Compared to my other recent builds (Small Stone and up-coming Keeley Compressor) this is a pretty simple PCB. It was a fast build and worked perfectly as soon as finished wiring up the harness. The sounds do exactly what I was expecting (I haven't got a point of comparison) with the three tone controls having clear response and the level and gain both responding well to controls.
The Tayda UV print came together pretty well - I had some fun with this one and like the result. I also received the rubber feet I was seeking so that these sit off of the bottom printing. I already printed the 2nd case and will be looking for a home for #2 so that I can get some feedback on the build and behavior.
A little more info on the name for this pedal. The pedal is named for Russell Ohl, who did material research at Bell Labs in the 1930's and is the discover (and patentor) of the P-N Junction - the root of the semiconductor diode and ultimately the transistor as well. So the voltage barrier and diode effect that makes our pedals clip (like the Guv'nor) is the result of Ohl's original work.
The images on the pedal are an adaptation from a publicly available image of Ohl at his lab bench. The smaller images are from the US Patent 2,402,662. I think this is the first patent for the P-N junction, but the actual invention is the use of the light-sensitivity of this crystal.
The overall concept for the Phido Sound pedals is taking shape - a bit scientific but playful and goofy (like Airedale Terrier, if you know one).
I finished this a week ago, but was imagining that I might put together a demo for the sound. Given that my guitar playing is not that exciting, and this pedal isn't really a fantastic synth effect, I am going to pass for the moment.
Compared to my other recent builds (Small Stone and up-coming Keeley Compressor) this is a pretty simple PCB. It was a fast build and worked perfectly as soon as finished wiring up the harness. The sounds do exactly what I was expecting (I haven't got a point of comparison) with the three tone controls having clear response and the level and gain both responding well to controls.
The Tayda UV print came together pretty well - I had some fun with this one and like the result. I also received the rubber feet I was seeking so that these sit off of the bottom printing. I already printed the 2nd case and will be looking for a home for #2 so that I can get some feedback on the build and behavior.
A little more info on the name for this pedal. The pedal is named for Russell Ohl, who did material research at Bell Labs in the 1930's and is the discover (and patentor) of the P-N Junction - the root of the semiconductor diode and ultimately the transistor as well. So the voltage barrier and diode effect that makes our pedals clip (like the Guv'nor) is the result of Ohl's original work.
The images on the pedal are an adaptation from a publicly available image of Ohl at his lab bench. The smaller images are from the US Patent 2,402,662. I think this is the first patent for the P-N junction, but the actual invention is the use of the light-sensitivity of this crystal.
The overall concept for the Phido Sound pedals is taking shape - a bit scientific but playful and goofy (like Airedale Terrier, if you know one).