madbeanpedals::forum

Projects => General Questions => Topic started by: Searing75 on February 13, 2014, 03:19:21 AM

Title: Nautilus issue!
Post by: Searing75 on February 13, 2014, 03:19:21 AM
I get no sound out of the pedal until I set the gain at around four o clock.  Then I get that exagerated increase in sensitivity past that point.

Also, the volume of the effect engaged is much higher than the non affected tone?

Any thoughts?  Thanks.

Chris
Title: Re: Nautilus issue!
Post by: jimilee on February 13, 2014, 03:44:44 AM
Post a thread in the tech supprt section with clear well lit photos. Right off I'd say reflow everything and check your values to make sure you didn't inadvertently swap say a 100r and a 100k for example.
Title: Re: Nautilus issue!
Post by: midwayfair on February 13, 2014, 04:28:10 PM
Quote from: Searing75 on February 13, 2014, 03:19:21 AM
I get no sound out of the pedal until I set the gain at around four o clock.  Then I get that exagerated increase in sensitivity past that point.

Also, the volume of the effect engaged is much higher than the non affected tone?

Any thoughts?  Thanks.

Chris

This is the gain pot taper issue mentioned in the build document. Everything's bunched up in the last quarter of the turn. A reverse log is better; you can also use a linear taper and limit it to something like 700K with parallel resistance.

And there's no reasonable cure for the volume differences, not even putting the volume pot external will guarantee you unity in all settings. I suspect that the original unit wasn't really made to be turned on and off mid song. My best suggestion is to set the gain where it's best for your main guitar in your favorite mode, and then set the volume trimmer for as close to unity as you can get.