Showing posts with label 12ax7. Show all posts
Showing posts with label 12ax7. Show all posts

Sunday, October 24, 2021

ReValver

Have you ever been playing your favorite pedal, or any pedal for that matter, and thought to yourself "gee, this sure would sound better with tubes"? Well with the ReValver now (almost) any pedal can have a tube! I say 'almost' as I've tried all my pedals and while they all work, not all sound great. I tore apart Matsumin's ValveCaster circuit and did a little experimenting. Essentially adding a send and return into the middle of the valve circuit, injecting whatever effect into the 12au7 and adding that "warm" tube sound to say a...fuzz or a....delay.....or a flanger...etc.



Wednesday, September 22, 2021

Loud!

The “Loud!” is a low watt/low volt tube amp. The TDA7052B is a little hard to come by but I believe the TDA7052A will suffice. The preamp section is a Matsumin Valvecaster providing gain and tone controls. That’s then pushed into the amplifier IC and out to the speaker(s). The speaker positive and negative terminals must remain isolated from an enclosure as to not ground out the signal. The taper of the volume pot might be altered as well. In the end you get somewhere around 3watts, give or take.




Piggyback Pair

Germanium transistors are becoming more and more scarce and the ones that you do find aren't great options for the classic fuzz circuits...