Exar DS-02 Distortion [schematic]
- VitaliiBobrov
- Breadboard Brother
Information
I continue to trace Exar pedals from my collection. Today I've traced Distortion from series 2.
Series 2 PCBs are easy to trace due to "transparency", my unit seems to be made in 1998 or later due to the dates on the Gain pot (98-01).
No surprise as it appeared to be simplified Boss DS-1 or you could consider it as extended Distortion+. It uses ULY7741 by CEMI which is Polish version of LM741.
Attached is the schematic with buffered bypass switching omitted.
Series 2 PCBs are easy to trace due to "transparency", my unit seems to be made in 1998 or later due to the dates on the Gain pot (98-01).
No surprise as it appeared to be simplified Boss DS-1 or you could consider it as extended Distortion+. It uses ULY7741 by CEMI which is Polish version of LM741.
Attached is the schematic with buffered bypass switching omitted.
- Attachments
-
- exar-ds-02-schematic.pdf
- Exar DS-02 schematic
- (61.58 KiB) Downloaded 279 times
- CheapPedalCollector
- Resistor Ronker
Seriously, thank you for tracing all these Exar pedals.
- VitaliiBobrov
- Breadboard Brother
Information
Thanks, I'm also curious about their circuits and was surprised the Exar pedals are just 1:1 clones and they put some engineering to all designs. I collecting them (unfortunately far from getting all ) and most of them sound quite good.CheapPedalCollector wrote: ↑23 Nov 2022, 20:49 Seriously, thank you for tracing all these Exar pedals.
- Ichabod_Crane
- Resistor Ronker
Is, in the schematic, C13 electrolytic cap well oriented? I expected negative side in the output.
- mirosol
- Resistor Ronker
I guess some Exar pedals have their output caps reversed. No biggie, since little voltage on the wrong side won't harm the poor little cap. I still think it should always by positive side to the portion of a circuit that has higher voltage. At least for longevity. In this case, it definitely should be negative to output.
Anyway.
Here's my layout for the DS-02. ne can easily swap the gain values from negative input to ground etc. Maybe even try on some LEDs and that kind of stuff. Nice alternative for a Boss, nevertheless.
Anyway.
Here's my layout for the DS-02. ne can easily swap the gain values from negative input to ground etc. Maybe even try on some LEDs and that kind of stuff. Nice alternative for a Boss, nevertheless.
http://tagboardeffects.blogspot.com/
http://mirosol.kapsi.fi/
"No such thing as innocence" -Iron Chic
http://mirosol.kapsi.fi/
"No such thing as innocence" -Iron Chic