Recent content by micmac

No, not really. Pre-Gain feels like an extension of Gain.

Here's a fun little project IMHO. I was looking for a Tweed sounding pedal. I built a few on breadboard and I liked the Red Llama. It sounded pretty good. A few things I didn't like, though: - audible tone suck (old manual says 100k input impedance) - it sounded a bit too tame - scratchy...

I wouldn't worry about the legs so much. Check the build doc of the AionFX Artemis MK II. He writes about the power cap (470uF instead of 100uF in PedalPCB build doc). Maybe that helps!

I wrapped it up. Some more things I tested on the breadboard: - Tried both TL062 & TL072, but I couldn't tell a difference. Both sounded good to me. If only one could easily put two opamps on a switch, so we could flick between the two of them... - I put the diodes (well, the 1N4148 and the...

Hi all! Recently I was taunted to try the Baja AFD, which I liked very much. So I said to myself that I would try a few more of Bajaman's preamps - on the breadboard at least. The first one was the EVH Overdrive, but althoug it worked fine and was well-behaved noise-wise (like the AFD), it...

I got to admit I slacked on the "enclosure aesthetics", didn't do anything in that department. Do I really need to bother with a decal if the pedal only has two knobs? :-) Still on the fence... On the other hand I will take the thing out of the case anyway, so I might as well do up the looks a...

Just saw that you also used MLCCs for the 1u caps :-) I read Bajaman did the same, so I did the same. Also to save some space on the vero. Nine 1u caps is a bit crazy :-)

Thanks for posting! Made me curious, because I like Appetite for Destruction! And I had never built anything from Bajaman before, but always wanted to. So, in the past days I drew a vero layout and built this thing. My soldering wire roll has about 10 centimeters left now, but I'm done. I used...

Hi Chuck, Sure, pic attached. In my opinion people in general mean magnitude when they say "higher VP" or "lower VP", like "2 is higher than 1", or "1 is smaller than 2", but they know that Vp for n-JFETs is negative, so mathematically "-2 is smaller than -1" and vice versa. So when you...

Just to add a small curiosity (a positive one, actually). I was looking through my J113 "collection" to find one for Q1 in the Viceroy that would bias up to 5V on the drain using the resistors from the schematic (10k drain and 1k8 source). The SMD ones I tested didn't bias right, VP too big. But...

Hi all, Here's a vero for the Britannia CB mod. I followed the version 1.2 schematic in the Boneyard. I stuck a 470nF ceramic in the power filtering section, because there was space for it (it's on top of the opamp) and it never hurts. The Brilliance pot I renamed to Presence, as per Chuck's...

Finding J201 transistors that biased up with the given resistors went pretty quick. The 2N5457 was harder. I tried 50 SMD equivalents and only four or five went over 5V. One of them went up to 5.8V. It has a pretty high Vp of a little over -1V. So I decreased R3 to 3K65 and that was that. The...

Thanks! I got a bunch of J201. I should be able to find some that bias like yours then!

Hi Chuck, I'm wondering if in August '25 you used J201 for Q2 and Q4 and the drain/source resistors from the schematic above? Or did you use SK193 & SK193 like earlier?

I built the sig generator from Valvewizard in '24. It's got a pretty good range and I like that I can set the output volume. The oscilloscope in one of the pics also has a sig gen, but you can only select the frequency (and also it offers other shapes than sin, which the Valvewizard does not)...