Recent content by rossbalch

Nice, these are cool mods. I think a big part of the issue with the Median is it isn't based on an 1176 actually but an Orange Squeezer I think.

I bought the PCB design one and I regret it. It was really basic. I was hoping for info on how to make good layouts, run traces for optimal noise reduction, reducing oscillation etc, but it was a really basic how to use Ki-Cad course essentially. IMO there's nothing you can't learn here or over...

TBF I think a lot of people gave up building PCBGM boards because of all the mistakes.

Curious if you tried a 2n3903? Have a bunch in my box but haven't used them in a circuit yet.

Yeah I was going to suggest just doubling the filter, you need a dual gang pot though, and finding a dual gang C pot can be tricky (though I think Tayda has them).

I think one problem that is hard to overcome is that the Tweed has that specific type of phase inverter that distorts in a particular way, and you can't really pedal that out of the amp. No matter goes in front, it will always go though that phase inverter and sound tweedish.

If you really want to get close with what you already have, you could just use 2x 4148 and 1x BAT41 (or 1n5817) in each direction. Or just the two 4148 honestly. edit: data from here https://rhpfelectronics.com/rhpf-electronics-handmade-guitar-pedals-in-switzerland/rhpf-nerd-lab/iv-bench/

Anyone have recommendations for testing points? A reminder of the schem. Also do my trim pot / multi turn, directions make sense?

Ok first attempt at a layout. This is the BJT module. ~60x40mm Aligned to 2.54mm spacing. There's a 5mm buffer between each component which hopefully should make exchanging components fairly easy. Trying to plug it directly into a breadboard seemed a little silly given the size, I think you...

Earlier in the chapter he actually explains how the log law of audio pots is a crude approximation and this way gives better results.

Yeah the muffin crumb inspired me to do this.

Love the vibe.

In Doug Small's book "Small Signal Audio Design" he suggests we get better control over our gain control by having the pot straddle to two feedback networks. However, I barely ever see pedal designs utilise this. Is there a downside? One I can foresee is that we might change the value of the...

Ideas for future modules FMV TMB Tonestack Baxandall Treble Bass Shelf Paramteric EQ Gyrator EQ Single Op-Amp Version Any others?

Yeah, this really stems from my own laziness. I layed out a Rat on my own, first using DIY Layout Creator, then actually on a breadboard, and it worked first time, which was awesome, but laying out all the feedback components was a real killjoy for me. I think I'll spend a lot more time...