Author Topic: Axess BS-2 Vero to Schematic  (Read 240 times)

aviherman5

Axess BS-2 Vero to Schematic
« on: September 17, 2021, 05:29:58 PM »
Hi all,

I have this Vero for the Axess BS-2 which is a super cool buffer used by EVH himself. I was going to put a higher resistance pot in it in order to get a boost.

I want to make a PCB for this but, alas, don't have a schematic. Does anybody have one?

If anyone wants to draw one up, I wouldn't complain hahahahaha

Thanks for your help!



aviherman5

Re: Axess BS-2 Vero to Schematic
« Reply #1 on: September 17, 2021, 06:29:26 PM »
Any chance this is right? Just drew it up  :icon_lol:


Rob Strand

Re: Axess BS-2 Vero to Schematic
« Reply #2 on: September 17, 2021, 06:43:08 PM »
It was quicker to draw than for me to find an on-line schematic which showed all the right elements (frustrating).

There's a 22pF from the opamp + input to ground.

Basically a non-inverting preamp driven from +/- 9V.    Very small amount of gain, 1k feedback R and 4.75k to ground.
« Last Edit: September 17, 2021, 08:48:59 PM by Rob Strand »
Plopping around the pot since an early age.

MikeA

Re: Axess BS-2 Vero to Schematic
« Reply #3 on: September 17, 2021, 08:55:39 PM »
Here you go.


It also works well with a switchable boost at the end, using the other half of the op amp, the response is still quite flat. 


« Last Edit: September 17, 2021, 09:09:31 PM by MikeA »
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aviherman5

Re: Axess BS-2 Vero to Schematic
« Reply #4 on: September 18, 2021, 10:00:00 PM »
Amazing! Thanks everyone for your help!