Had a go at this one and even though it worked I had a lot of oscillation on the eq and gain pots when dimed, I think this is a common theme with the FSB trace. Had a look around and found that Aion did a new trace at the end of last year:
Thanks for the the updated schematic. Boy, I guess I guess I need to rebuild this from scratch. This is one of my favorites but as you say, the "Stoner" mode is a bit noisy. I had to add a row on the top of the layout to fit in the two 220uF cap and 100ohm resistor. The other main difference was the 10k resisors in the two first Mu Amp stages which is 1k in the new schematic....should give a bit more gain and clarity.
It's a nice circuit, the eq is very powerful and can change the tone substantially. However, there are better drives out there, of the one's I have built recently the Shin's Dumbloid and Baja AC30 are fantastic.
Man, I love these Catalinbread drives. I built this some time ago but it didn't sound quite right. Looked at it again and found a cap oriented incorrectly. That punch is something that makes the Wiio stand out for me. Also the clarity even when gain is cranked up. The fuzz side is whiny though. Oddly, only when the gain is backed off a bit. Any ideas for shutting it up other than adding a buffer?
Had a go at this one and even though it worked I had a lot of oscillation on the eq and gain pots when dimed, I think this is a common theme with the FSB trace. Had a look around and found that Aion did a new trace at the end of last year:
ReplyDeletehttps://aionfx.com/app/files/docs/artemis_mkii_documentation.pdf
I incorporated the changes into the layout (had to bodge it a bit) but it works with zero oscillation now.
Thanks for the the updated schematic. Boy, I guess I guess I need to rebuild this from scratch. This is one of my favorites but as you say, the "Stoner" mode is a bit noisy. I had to add a row on the top of the layout to fit in the two 220uF cap and 100ohm resistor. The other main difference was the 10k resisors in the two first Mu Amp stages which is 1k in the new schematic....should give a bit more gain and clarity.
DeleteNice work!
ReplyDeleteJust a couple of things about the switch, took me a while to work this out!
Looking at the Aion schematic for the MODE B side of the switch shouldn’t the Drain of Q1/ 1UF/ 1K be joined to SW2 and just the 4.7NF joined to SW3?
For the MODE A side of the switch I think the 22UF needs to be flipped in polarity?
Gotcha, looking better now?
DeletePerfect!
Deletekizzer, what FETs did you use and where did you get em if you don’t mind sharing? Wanted this one for some time.
ReplyDeleteI'm using the MPF4393 equivalent smd's the MMBF4393. I guy on ebay in the UK was selling 10 for £2. You can also the PN4393 which is the same.
DeleteI’ve been looking for those buggers for maybe a year. Do you like the circuit? Is it worth it?
ReplyDeleteIt's a nice circuit, the eq is very powerful and can change the tone substantially. However, there are better drives out there, of the one's I have built recently the Shin's Dumbloid and Baja AC30 are fantastic.
DeleteNice, love recommends. And trust an Elliott fan.
ReplyDeleteMan, I love these Catalinbread drives. I built this some time ago but it didn't sound quite right. Looked at it again and found a cap oriented incorrectly. That punch is something that makes the Wiio stand out for me. Also the clarity even when gain is cranked up. The fuzz side is whiny though. Oddly, only when the gain is backed off a bit. Any ideas for shutting it up other than adding a buffer?
ReplyDelete