Very nice! Thanks! Are you sure with the OPA3124? I could not find this type of OP-Amp. O did you mean the OPA2134? On freestompboxes.org is now version 0.3 with corrected C4 and C6. On the first view I could not see if this is already done in your vero?
Someone will beat me to this I'm pretty sure, but just etched my board. Ahhh finally am now able to comment I kept getting stuck in a loop. Anyways built quite a few of your layouts (well I redraw trying to eliminate the jumpers best I can but you do all the hard stuff that I can't I started getting nervous when you disappeared 3 or 4 weeks ago cause I have'nt found ANYONE else doing consistent layouts with minimal layout and design issues (if any at times.) Demos of this pedal sound real nice and interactive can't wait to play this stacked with others
I didn't built it, but i didn't found mistake in the layout. Maybe just a missing 100nF cap in the filter power supply, in the voltage bias, we could add it easily if we want, on the two stripes under 1uF cap. Thanks for the layout.
I confirm it works. OPA2134 seems to be needed for IC1. Unfortunatly, a classic 4558 is too weak and in pain for the type of distorsion IMO. OPA2134 keeps a very good punch and clarity.
As it is, it's very efficient while playing on the guitar volume knob but too heavy for me with guitar volume knob at full.
I did a few mods for my personal taste : - sparkle and low mids knobs on the front instead of trimmers - 47UF on 4L-4M changed to 4,7uF - I added a 180k resistor alongside the 100pf at the top the reduce the low mids range (too heavy in the second half). It gives a 65k low mids pot instead of 100K. - OPA2134 for IC1 - NE5532 for IC2 - no 120nF available for me so I changed it the 100nf and replaced the 10K at the front to 12k. - I added a clipping switch with 3mm red leds on center position, 4X4148 for the second choice, and the original 2x4148 as third position. I prefer the two more opened positions. - 56nF instead of 47nF to ground as tone cap.
Hi! Thanks for your work as always!! Is there any real difference to the SD-9? Cheers!!
ReplyDeleteYes, there is! Here you can hear the difference very good:
Deletehttps://www.youtube.com/watch?v=c3Atroyn-kc
Very nice! Thanks! Are you sure with the OPA3124? I could not find this type of OP-Amp. O did you mean the OPA2134?
ReplyDeleteOn freestompboxes.org is now version 0.3 with corrected C4 and C6. On the first view I could not see if this is already done in your vero?
Definitely an OPA2134. From the looks of it the layout does have the correct C4 and C6 too :-)
DeleteSomeone will beat me to this I'm pretty sure, but just etched my board.
ReplyDeleteAhhh finally am now able to comment I kept getting stuck in a loop.
Anyways built quite a few of your layouts (well I redraw trying to eliminate the jumpers best I can but you do all the hard stuff that I can't
I started getting nervous when you disappeared 3 or 4 weeks ago cause I have'nt found ANYONE else doing consistent layouts with minimal layout and design issues (if any at times.)
Demos of this pedal sound real nice and interactive can't wait to play this stacked with others
I didn't built it, but i didn't found mistake in the layout.
ReplyDeleteMaybe just a missing 100nF cap in the filter power supply, in the voltage bias, we could add it easily if we want, on the two stripes under 1uF cap.
Thanks for the layout.
Output and non-inverting input of that IC, where is the Vbias about 4.5v, are jumpered. So I think it's ok.
ReplyDeleteTag it! Seems to work as per the demos etc.
ReplyDeleteI confirm it works.
ReplyDeleteOPA2134 seems to be needed for IC1. Unfortunatly, a classic 4558 is too weak and in pain for the type of distorsion IMO. OPA2134 keeps a very good punch and clarity.
As it is, it's very efficient while playing on the guitar volume knob but too heavy for me with guitar volume knob at full.
I did a few mods for my personal taste :
- sparkle and low mids knobs on the front instead of trimmers
- 47UF on 4L-4M changed to 4,7uF
- I added a 180k resistor alongside the 100pf at the top the reduce the low mids range (too heavy in the second half). It gives a 65k low mids pot instead of 100K.
- OPA2134 for IC1
- NE5532 for IC2
- no 120nF available for me so I changed it the 100nf and replaced the 10K at the front to 12k.
- I added a clipping switch with 3mm red leds on center position, 4X4148 for the second choice, and the original 2x4148 as third position. I prefer the two more opened positions.
- 56nF instead of 47nF to ground as tone cap.