This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Wednesday, November 5, 2014

Range Blaster

From Fuzz Central, this is a modified Dallas Rangemaster treble booster. Uses an NPN germanium transistor so you can daisy chain it with other pedals that run off a positive 9 volt supply.


  1. Hi David! I built one of these and it's amazing with AC187K. I only had an issue with it. The pedal isn't audible until I turn the boost knob around somewhere 12 oclock. Is that normal, or do I need to change something?

    1. Sounds like you may have used a linear taper pot. Try switching to a logarithmic/audio pot.

    2. If I'm not terribly mistaken, I'm certain that I used logarithmic. But it wasn't a 9mm pot so, I did a lot of cable and pcb pushing to fit it in the enclosure. Maybe I just damaged the pot or another component doing so. I can't think of any other reason.

    3. Also, I forgot to mention that when I turn the knob there is a little grinding noise. Can that be an indicator of a bad potentiometer?

    4. That's fairly common with Rangemasters (which is basically what the Range Blaster is). I wouldn't worry about it. I think mine does that too.