New buchla 208 card 12,sound demo Bom /pcb available

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captnapalm
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Post by captnapalm » Sat Mar 23, 2019 12:31 pm

One mod is needed to get the right main output working. There’s nothing feeding the input of the op amp. The original card 12 had a bridge between pins 7 & 9 so the same signal gets sent to both inputs, and is the same on both outputs.

Image

On the Boops card if you want behavior like the original you can bridge them the same with a small wire or resistor leg:

Image

If you want the behavior like Boops describes, you can take the output from the wiper on channel B pot:

Image

Other options are possible if you want to experiment. I tried sending the CO output directly in before the gates, but it gave a lot of bleed so I abandoned that approach.
Last edited by captnapalm on Sat Mar 23, 2019 1:15 pm, edited 1 time in total.

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captnapalm
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Post by captnapalm » Sat Mar 23, 2019 12:56 pm

I did some comparison recordings between an original card 12 and the Boops. These aren’t a perfect 1:1 comparison because they were made many days apart and I recreated the patches for the Boops versions, but hopefully they’re helpful. All were recorded directly into Protools with an Mbox and no additional effects or plugins used. I tried to capture a variety of types of sounds so you could see how the reverb affected them etc.

Overall I find the Boops card is slightly tighter with cleaner bass response on the main outputs, but the big difference is in the reverb and the quality of the headphone amp, which are significant and much nicer to my ears.

I tried the motherboard mods Boops describes, but it gave less reverb response for me (but with finer grained control). I decided I like to be able to drown the signal in reverb so I went back to the original configuration.


Sample 1, original card
Sample 1, Boops card

Sample 2, original card
Sample 2, Boops card

Sample 3, original card
Sample 3, Boops card

Sample 4, original card
Sample 4, Boops card

Sample 5, original card
Sample 5, Boops card

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boops
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Post by boops » Sat Mar 30, 2019 2:28 am

Many thanks Captain !
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
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boops
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Post by boops » Wed Apr 10, 2019 1:52 am

Monsieur davebr page at Modularsynthesis

https://modularsynthesis.com/roman/boop ... card12.htm


Many thanks
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Thu May 02, 2019 3:40 am

I order a new batch now,pm if interested
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Sun May 05, 2019 2:15 am

A reverb mix level CV circuit (vactrol based) is ready to test,more in a few days
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Tue May 21, 2019 4:51 am

I ve just finished to built a little pcb for the function :
CV control of the pot reverb ( VCA)
the reverb on the demo is this of my new card 12,but works with the original too.
I use (thanks papz for the idea) the rightmost pressure banana .
If interested by a pcb diy or or a ready built ,pm me
New really interesting modulations possible ;)
a quick demo
https://soundcloud.com/boops95/new-card ... t-mix-demo
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Sat Jun 01, 2019 2:19 am

the new pcb batch will be available in a few days


pcb card 12 is 40 eu +reverb cv 15 eu + bracket
shipping is 10 eu bubble letter registered WW

built card 12 :130 eu +reverb cv 35 eu little package registered shipping Eu cheaper or WW
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Wed Jun 12, 2019 2:21 am

Available.
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Fri Jun 21, 2019 3:07 am

Order before the summer vacation;) :bananaguitar:
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Thu Jun 27, 2019 3:01 pm

last days before vacation ;) Rockin' Banana!
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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keithwin
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Card 12

Post by keithwin » Wed Jul 10, 2019 10:30 am

One for me please!

:)

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boops
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Post by boops » Wed Jul 17, 2019 6:35 pm

in stock but
i will come back home not before 6 weeks...
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Tue Sep 10, 2019 2:28 am

Available ,in stock.
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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captnapalm
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Post by captnapalm » Sun Sep 29, 2019 2:46 am

BOM has been updated with all in-stock components and best fitting caps :cloud:

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boops
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Post by boops » Fri Oct 04, 2019 3:25 am

captnapalm wrote:BOM has been updated with all in-stock components and best fitting caps :cloud:
Thanks
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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Clemdu
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Post by Clemdu » Thu Oct 31, 2019 9:02 am

Hello everyone,

I'm finally getting around to build this card :banana:

any word on the motherboard mod? I read Captainnapalm prefered the original, any other experiences out there?

Thanks!

Clem

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boops
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Post by boops » Tue Nov 12, 2019 3:10 am

Finally ,i didnt keep the mod,i use a resistor like DaveB
see his web site notes
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Post by boops » Thu Nov 21, 2019 1:43 pm

A few pcb in stock .
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

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boops
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Re: New buchla 208 card 12,sound demo Bom /pcb available

Post by boops » Tue Jan 21, 2020 3:44 am

up
FS :custom buchla 203 style càbinet ,skiff new design,boat ,hardware for diy cabinet ,easel case ,new 1u to 10u to 56u and more. / New 208 buchla card 12 /
HQ small case buchla psu PCB
https://www.muffwiggler.com/forum/viewt ... 93#3118393
https://www.muffwiggler.com/forum/viewt ... highlight=

PacificState
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Re: New buchla 208 card 12,sound demo Bom /pcb available

Post by PacificState » Sun Feb 02, 2020 6:51 pm

With a bit of advice of Dave Brown along the way (thank-you again, if you read this!), I have my 208 working with the new card 12. I'm about to calibrate it, but I'm noticing that I'm getting MO + CO bleed into the headphone output if I turn both outputs + the reverb mix down. The signal output jacks, on the other hand, seem to be totally clean.

Given the previous comments in the thread, I'm not sure I would expect this. Any ideas? I've cleaned flux from the board and checked my soldering - I guess it could be a grounding issue? Thanks!

klangbauer
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Re: New buchla 208 card 12

Post by klangbauer » Fri Feb 14, 2020 9:16 am

Is there a complete CARD 12 schematic around??

Because it is DIY and I hope I get one for better understanding what I'm doing and necessary for debugging.

As far I understand from the partial schematic here, a LME49740 works as a part of reverb recovery amp. It boost a tiny signal from reverb out x20 and therefore it is sensitive for noise. Therefore to replace it with an TL074 is not best choice. As far I understand.
I my design I use at this point a NE5532, but it is only a dual opamp.
A complete schematic could help for a better understanding.

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