James Broonbreed Posted January 7, 2014 Report Share Posted January 7, 2014 I'm pretty sure there's already a thread about this but I couldn't find it. I was wondering if anyone out there would be able to mod' an MXR micro amp so it has a master volume control. Quote Link to comment Share on other sites More sharing options...
fat ol' sun Posted January 7, 2014 Report Share Posted January 7, 2014 I'm pretty sure there's already a thread about this but I couldn't find it. I was wondering if anyone out there would be able to mod' an MXR micro amp so it has a master volume control. as in low volume, high distortion type tone? Quote Link to comment Share on other sites More sharing options...
fat ol' sun Posted January 7, 2014 Report Share Posted January 7, 2014 Just had a look at the cct diagram. Single op amp with enough compliance to drive a small speaker. I'm not familiar with the sound of it having never played one, but an additional amp section preceded by an attenuator pot would give you a master vol type control. You could crank up the current vol control to full for max distortion, the attenuator pot would control the vol without adding additional distortion much like a master vol. You would also need all the biasing, decoupling malarkey, in broad terms 40% of the existing comps again in terms of additional "stuff" Quote Link to comment Share on other sites More sharing options...
James Broonbreed Posted January 8, 2014 Author Report Share Posted January 8, 2014 Just skimmed over that... Cheers, I think. At 12 o'clock, the micro amp doesn;t really do much, 3 o'clock gives a pretty decent amount of breakup and then max gives a proper nice crunch. The only probelm being that when I use it as a drive pedal in this way, ie off on off through a cleanish amp, the volume increase is too much and there's no control. I'd rather keep this and add some sort of attenuation rather than just swapping it for a more conventional drive pedal as the sound is pretty much bang on what I'm after. But yeah, I'm not too electronically minded and I'm a lazy cack handed shite when it comes to attempting DIY of this nature so if anyone can do it, there's a bar of marabou in it for them. Quote Link to comment Share on other sites More sharing options...
Old Gold Posted January 8, 2014 Report Share Posted January 8, 2014 Sounds like it would require a lot more engineering than a modification exactly. http://www.guitarguitar.co.uk/pedals_s_detail.asp?stock=10090114294029 I've got one of these. Sounds like what you're after. Quote Link to comment Share on other sites More sharing options...
James Broonbreed Posted January 8, 2014 Author Report Share Posted January 8, 2014 Dang, oh well, could be a swap I need after all then. Appreciate the advice folks! Quote Link to comment Share on other sites More sharing options...
Lemonade Posted January 8, 2014 Report Share Posted January 8, 2014 PaulWellerOnABike.jpg Quote Link to comment Share on other sites More sharing options...
James Broonbreed Posted January 8, 2014 Author Report Share Posted January 8, 2014 A sphincter says what? Quote Link to comment Share on other sites More sharing options...
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