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[sdiy] IN-13 Bargraph VU Meter

[sdiy] IN-13 Bargraph VU Meter

2026-02-28 by Terry Bowman

Does anyone have the PCB art for this?



I have a pile of IN-13s and I’d love to build one. Laying out a board is beyond my capabilities.

Is Marc still around?


Terry Bowman, KA4HJH
"The Mac Doctor"


"I’ve seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near Tannhäuser Gate.

"All those moments will be lost in time like tears in the rain."— Roy Batty, Blade Runner

Re: [sdiy] IN-13 Bargraph VU Meter

2026-02-28 by Oren Leavitt

Cool!
That looks tempting to me. I have a couple of those THAT4301 analog 
engines that I bought some years ago. I was originally intending to 
build a vocoder around THAT4301s but the chips were discontinued.
Show quoted textHide quoted text
On 2/28/26 10:50 AM, Terry Bowman via Synth-diy wrote:
> Does anyone have the PCB art for this?
> 
> http://m.bareille.free.fr/vu-in13/vumeter_in13.htm <http:// 
> m.bareille.free.fr/vu-in13/vumeter_in13.htm>
> 
> 
> I have a pile of IN-13s and I’d love to build one. Laying out a board is 
> beyond my capabilities.
> 
> Is Marc still around?
> 
> 
> Terry Bowman, KA4HJH
> "The Mac Doctor"
> 
> https://www.astarcloseup.com <https://www.astarcloseup.com>
> 
> "I’ve seen things you peoplewouldn’t believe. Attack ships on fire off 
> the shoulder of Orion. I watched c-beams glitter in the dark 
> near Tannhäuser Gate.
> 
> "All those moments will be lost in time like tears in the rain."— Roy 
> Batty, /Blade Runner/
>

Re: [sdiy] IN-13 Bargraph VU Meter

2026-02-28 by Terry Bowman

> On Feb 28, 2026, at 12:57 PM, Oren Leavitt via Synth-diy <synth-diy@synth-diy.org> wrote:
> 
> Cool!
> That looks tempting to me. I have a couple of those THAT4301 analog 
> engines that I bought some years ago. I was originally intending to 
> build a vocoder around THAT4301s but the chips were discontinued.


What I’d like to have is a simple IN-9/IN-13 driver board that has a CV input and a level knob. Simple. All of the designs I’ve seen are part of a more complex circuit that I’m not about to try to modify. If anyone wants to do it for me I won’t complain. 

I have a small pile of both kinds of tubes that I acquired before that prices went crazy. Sadly, I don’t have the purple IN-9s filled with argon.


Terry Bowman, KA4HJH
"The Mac Doctor"

https://www.astarcloseup.com

"Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact."—Carl Sagan, Psychology Today, 1996

Re: [sdiy] IN-13 Bargraph VU Meter

2026-03-05 by marc bareille

Hello Terry ,

I am still here.

I redesigned pcbs for both Vumeters ( 2252 and 4301) many years ago, under Kicad . Double sided gerber , stereo only .

Video of a complete module here https://www.youtube.com/shorts/v-DcO_LF344

3D picture of the pcb attached at the end ofthe email.

Thanks

Marc B.
Show quoted textHide quoted text
Le 28/02/2026 à 17:50, Terry Bowman via Synth-diy a écrit :
Does anyone have the PCB art for this?



I have a pile of IN-13s and I’d love to build one. Laying out a board is beyond my capabilities.

Is Marc still around?


Terry Bowman, KA4HJH
"The Mac Doctor"


"I’ve seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near Tannhäuser Gate.

"All those moments will be lost in time like tears in the rain."— Roy Batty, Blade Runner


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