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GK rails in a pedal?

#583
johnk_10 said:
here's the final layout with all of the corrections:
Click to expand...

Thank you for the update. You may not have seen my post since I edited it, but I had 3 other concerns:

#1: Unless I missed something, I believe the cap mark as 1u near the input (between the two 2M2 resistors) should be 100n.

#2: Where is the 1u cap you're suppose to use if you don't use the boost suppose to go? Where the jumper by the Boost Sw2 is?

#3: The 1k resistor in the bottom right area (R3) doesn't seem to be connected right. It shouldn't be connected to "Output 3". It's connected to the wrong side of the 1k resistor at the top right (R7).

I apologize if I'm bugging you with all my questions. I just want to make sure everything is correct before I get some boards made.
 
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#584
you linked the wrong layout. please edit/remove it in your response to avoid confusion. it is supposed to be this one:
[Invalid or Expired Link Removed]

Dominic D said:
Thank you for the update. You may not have seen my post since I edited it, but I had 3 other concerns:

#1: Unless I missed something, I believe the cap mark as 1u near the input (between the two 2M2 resistors) should be 100n.
Click to expand...

we ended up going with a 1u instead of a 100n for a fuller low end.

Dominic D said:
#2: Where is the 1u cap you're suppose to use if you don't use the boost suppose to go? Where the jumper by the Boost Sw2 is?
Click to expand...

yes, and it's marked as a 'NOTE" on the latest layout posted above.

Dominic D said:
#3: The 1k resistor in the bottom right area (R3) doesn't seem to be connected right. It shouldn't be connected to "Output 3". It's connected to the wrong side of the 1k resistor at the top right (R7).
Click to expand...

the 1K resistor is also relocated and corrected on my most recent the layout posted above. it goes from the junction of the two 10R's to ground.
 
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#585
johnk_10 said:
you linked the wrong layout. please edit/remove it in your response to avoid confusion. it is supposed to be this one:

[Invalid or Expired Link Removed]



we ended up going with a 1u instead of a 100n for a fuller low end.



yes, and it's marked as a 'NOTE" on the latest layout posted above.



the 1K resistor is also relocated and corrected on my most recent the layout posted above. it goes from the junction of the two 10R's to ground.
Click to expand...

I have no idea how it happened, but when I first opened the latest file, it looked like the last version. I re-downloaded it and now I see all the changes. Thanks again.
 
#589
johnk_10 said:
we ended up going with a 1u instead of a 100n for a fuller low end.
Click to expand...

C8 should be 100nF... we were changing C3 from 1uF to 100nF back to 1uF when we were using the JFET buffer and were trying to get rid of scratchy level control. C3 is 1uF.

But having C8 at 1uF won't change the circuit freq response.

-Frank
 
#593
DirtyDuke said:
I'll ask Hamish at Southampton, he may be I interested in building a few.
Click to expand...

TinyE said:
Would anyone be interested in a batch run of pcbs? There's quite a few online places that make them. I even found one place that will assemble for you. I can check on pricing if there's enough interest. They will do a run of 5, but I suspect it will be cheaper if more are made.
Click to expand...

DirtyDuke TinyE,
Did either of you guys have any luck finding someone to build a batch of PCB's
 
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