Search results

C15 on this build calls for a 30p. All I have is a 33p. Since I'm using an OP07 in place of an LM308, would this compensation cap even be needed? If so, is the 33p going to work (will it sound like a rat)? I hate not realizing I don't have a particular value until I start soldering. 😣 I...

I just finished a version of the Purple Plexi 800. The gain pot makes little to no difference in the gain amount until the last (approximately) 10% of the rotation. It called for a B1k pot. What potentiometer (value & type) would you guys use to help better spread out the gain across the...

Built one of these and really like the way it sounds! Very good alone and pushed with another overdrive. One issue I've found is a high pitched whine from the pedal especially if boosted. I can lower the gain and it helps but it does somewhat compromise the pedals ideal settings. Is there...

I recently built a Aion Effects Delta Amp Overdrive. I really like the mild JFET breakup. My only complaint is the tone control isn't very balanced. It is a little bottom heavy. I could use a little more high end. What could I change in the tone circuit to help with gaining some highs...

O.k., my son gave me one of those chinese finkelstein fuzz pedal kits for christmas. Upon studying the pcb, (there is no schematic provided) I find that it is basically an opamp fuzz without the tone switch. When comparing the BOM (the kit and the Dream Fuzz) for each, it is part for part...

Missed the designation on the parts list and didn't order any. Just trying to avoid more waiting... Are there any diodes that would work in its place in this circuit? Thanks for any info...

Finished getting my Muffin Fuzz together and working yesterday. I built the "Mark Us" version since I had all but one of the correct resistor values. I put a 470k at R20 instead of the 430k that it calls for (many if the other variants used a 470k in the same position). My "research"...

The PCB for this should be in the mail today. I settled on building the Stomp '75 variant. In reviewing the build docs, I find that I don't have any 12k's. They are found at R4, R10, R15, & R21. Along the voltage supply. I understand that a fuzz circuit can be flexible, but I don't want...

What other transistors have been used to put this one together? The OC139 is kind of hard to come by.

Is it the op amp? the circuit? a little of both? I wonder how important the op amp choice is to the end result of the overdrive...

volume dimed with the gain and tone at 11 o'clock sounds great to me! i am really diggin' it's clarity. i just wish it would jump out a little more when i step on it. i can increase gain and it helps, but i like the edge of breakup sound it gives my les paul. is there a component change i...

When i look at build info and schematics i'm having trouble determining what type of capacitor (other than electrolytic) is being referenced. Is there a rules concerning cap type and where they are applied?

How would a 2M instead of a 2.2M resistor affect this circuit?

I just finished my first build in a long time. Been wanting a fuzz so I went with a Dream Fuzz. This thing roars!, but I have a couple of challenges; - There is a low freq oscillation that is always there and, - when I switch to tone bypass the level drops to below the bypassed volume...

...ordered the 1590B not realizing the 125B is recommended. Really don't want to wait. This company and this forum are great. I just recently discovered them and am excited about building my own stuff! Thanks for any advice.