Hamlet Delay by Jon Patton
Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/Hamlet-Delay-by-Jon-Patton-tp32472.html
02/25/2018 - I got ahold of the pedal that I made using the 2nd layout, and I'm sorry to report this one also has noise when using the tails wiring. I had wired it as true bypass, which is noise free (other than the usual PT2399 artifacts) and that fooled me into thinking the noise was resolved. The noise exists in both layouts when bypassing with tails. My apologies.
09/04/2017 Update: New layout added, dated 09/04/2017. Verified (still has noise with tails bypass).
08/26/16 Update: I was unable to get rid of the noise mentioned below while using the charge pump. I removed the charge pump, rebiased the 2n5457 and the pedal is quiet. I'm concerned the layout itself may be the issue. Maybe the ICs are to close to each other? FWIW, The pedal still sounds really good running at 9Vs.
Info here
Version 1.2 Build Doc
I converted the 25k tone trimmer an external pot, and reversed the connections so CW = brighter/noisier CCW = darker/less noise. 50k linear may be better for more highend rolloff (and more noise rolloff)
If using an LT1054, lift pin 1. And the zener can be increased to 12v.
(note the ICL7660SCPA is mounted upside down)
URL: http://guitar-fx-layouts.238.s1.nabble.com/Hamlet-Delay-by-Jon-Patton-tp32472.html
02/25/2018 - I got ahold of the pedal that I made using the 2nd layout, and I'm sorry to report this one also has noise when using the tails wiring. I had wired it as true bypass, which is noise free (other than the usual PT2399 artifacts) and that fooled me into thinking the noise was resolved. The noise exists in both layouts when bypassing with tails. My apologies.
09/04/2017 Update: New layout added, dated 09/04/2017. Verified (still has noise with tails bypass).
08/26/16 Update: I was unable to get rid of the noise mentioned below while using the charge pump. I removed the charge pump, rebiased the 2n5457 and the pedal is quiet. I'm concerned the layout itself may be the issue. Maybe the ICs are to close to each other? FWIW, The pedal still sounds really good running at 9Vs.
Info here
Version 1.2 Build Doc
I converted the 25k tone trimmer an external pot, and reversed the connections so CW = brighter/noisier CCW = darker/less noise. 50k linear may be better for more highend rolloff (and more noise rolloff)
If using an LT1054, lift pin 1. And the zener can be increased to 12v.
(note the ICL7660SCPA is mounted upside down)
1978 Gibson Les Paul Standard, Cherry Sunburst
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