Hello everyone, is there any layout out there for a MXr Dynacomp compressor with no "POP" en swtich is pressed? It seems every layout on the web has the same problem
It's not the layout, that causes the problem... ;-)
Quote from: roseblood11 on June 05, 2020, 06:02:48 PM
It's not the layout, that causes the problem... ;-)
Well i dont know what else to test.. Do you have any ideas why is it poping?
The original design appears to have no pull-down resistor. If there's voltage on that input cap, you'll get pop. Fit a resistor. RG suggests 4M7 in his write-up. Anything "big" will do.
Show us the layout and the schematic, that you are actually using, and we can help you.
I suggested "pedal ventriloquism"...and I meant it. When a true-bypass pedal is plugged into an e-switched pedal, the true-bypass pedal may function absolutely pop-free on its own, but produce a pop in the next pedal because it momentarily disconnects and reconnects the input cap on that pedal. It creates the illusion that the TB pedal is the offender, because the popping only happens when the TB pedal is switched, but not when the e-switched pedal is bypassed or engaged.
The cure: IF you routinely plug your Dynacomp into something like a Boss or similar pedal, then solder a 1M resistor from the tip to ground on the input jack of the e-switched pedal, allowing the input cap on that pedal to drain.
Thank you all for replying. im using the pedal alone and i tried with pulldown ressitors. I think the circuit itself has gone microphonic somehow... Anyone experiencing the same? The layout is this http://effectslayouts.blogspot.com/2015/04/mxr-dynacomp.html
So does the amp you plug into have an input cap with a "free end"?
Quote from: Mark Hammer on June 08, 2020, 06:33:02 PM
So does the amp you plug into have an input cap with a "free end"?
Hello Mark, i really dont know. Its a Soldano Slo clone and i dont feel safe openng it ha ha. But none of the other pedals i have built behave this way. I mean its not something terrible... Its just there but as one other guy mentioned in some other post, i could live with it if its something to expect from an MXR Dynacomp. If its something wrong that i am doing then i dont want it anymore. Its really frustrating. Its a fainted click but when playing at loud volume, if a strung a chord and quickly press the 3pdt, i hear a strong "POP" or "click" acompanied with the increased volume (with the pedal set high enough) But if i do the same with a Fuzzface, Overdrive, Distortion, i dont hear any POP or click, just the obvious jump of volume
Its not so much pronounced when the guitar is muted. But if i crank the amp loud enough and put the pedal with both knobs at full i can also hear the "CLICK" or "POP" much louder than in other pedals
Quote from: roseblood11 on June 08, 2020, 07:50:22 AM
Show us the layout and the schematic, that you are actually using, and we can help you.
http://effectslayouts.blogspot.com/2015/04/mxr-dynacomp.html
This is the layout.