Doepfer

As you may have seen elsewhere, I'm working on making new tube modules
in Euro/Doepfer format, probably for introduction early 2009.

They will be mechanically similar to Cwejman, except with big fat
vacuum tubes poking out of holes in the front panel. Probably 28HP
size panels for most functions. They won't protrude more than about 1"
behind the panel, but those tubes will stick out as mucha s 2",
depending on the tube type (and they are allll over the place in
height--BN6 tubes are especially tall).

Power supplies will be an issue--most of the tubes I'm contemplating
will need +5v power at an amp or so per module, from an added supply
(the little +5 supplies that Doepfer sells will be hopelessly
inadequate). To run heaters. They suck a LOT of current.

A VCO is in the works--I have a new circuit that produces a really
nice sinewave, clippable to a square wave, with a very wide pitch
control range--much wider than the thyratron VCOs we've made to date.
Linearity looks good and it might have V/octave CV control (if I can
cram it onto that little board).

Same circuit can be modified slightly to be used as a bandpass filter.
Also plan eventual versions of the TM-6 filter, TM-1 waveshaper, a
VCA/distortion using remote-cutoff pentodes, and possibly other
things. No CV sources, just audio signal sources and processors. These
will be fairly simple designs, for obvious reasons....don't even think
about triangle waveforms or state-variable filters, such things can't
be made in practical form with tubes. Tube distortion, no problem!

Forgive me if some of you appearance-freaks don't like this, but I
wanted to make my panels really stand out. So I am leaning toward
Metasonix yellow. 

I've asked about this on other forums, and the consensus was
95% for yellow panels:
https://www.blogger.com/comment.g?blogID=17775202&postID=7313555627935826490"
http://www.muffwiggler.com/forum/viewtopic.php?t=1198
Also asked on the "Modular Synth Panels" Yahoo group.

Reasonable opinions are welcome.

Hope you don't mind Eric, but I've bought the panel question up on 
another forum: 
http://www.modularsynth.net/viewtopic.php?t=1557
Not sure if we'll get any responses. We can create a poll there as 
well if you want to see some actual votes. 
Regards,
Adam

--- In Doepfer_a100@yahoogroups.com, amnesia <amnesia@...> wrote:
>
> Forgive me if some of you appearance-freaks don't like this, but I
> wanted to make my panels really stand out. So I am leaning toward
> Metasonix yellow.
> 
> what drugs did you give them before the consensus.:-)
> 
> .....not sure about the yello thing but I am one who love the 
silver 
> faceplates.
> Im not big on different looking face plates :-(
> 
> 
> metasonix2000 wrote:
> >
> > As you may have seen elsewhere, I'm working on making new tube 
modules
> > in Euro/Doepfer format, probably for introduction early 2009.
> >
> > They will be mechanically similar to Cwejman, except with big fat
> > vacuum tubes poking out of holes in the front panel. Probably 28HP
> > size panels for most functions. They won't protrude more than 
about 1"
> > behind the panel, but those tubes will stick out as mucha s 2",
> > depending on the tube type (and they are allll over the place in
> > height--BN6 tubes are especially tall).
> >
> > Power supplies will be an issue--most of the tubes I'm 
contemplating
> > will need +5v power at an amp or so per module, from an added 
supply
> > (the little +5 supplies that Doepfer sells will be hopelessly
> > inadequate). To run heaters. They suck a LOT of current.
> >
> > A VCO is in the works--I have a new circuit that produces a really
> > nice sinewave, clippable to a square wave, with a very wide pitch
> > control range--much wider than the thyratron VCOs we've made to 
date.
> > Linearity looks good and it might have V/octave CV control (if I 
can
> > cram it onto that little board).
> >
> > Same circuit can be modified slightly to be used as a bandpass 
filter.
> > Also plan eventual versions of the TM-6 filter, TM-1 waveshaper, a
> > VCA/distortion using remote-cutoff pentodes, and possibly other
> > things. No CV sources, just audio signal sources and processors. 
These
> > will be fairly simple designs, for obvious reasons....don't even 
think
> > about triangle waveforms or state-variable filters, such things 
can't
> > be made in practical form with tubes. Tube distortion, no problem!
> >
> > Forgive me if some of you appearance-freaks don't like this, but I
> > wanted to make my panels really stand out. So I am leaning toward
> > Metasonix yellow.
> >
> > I've asked about this on other forums, and the consensus was
> > 95% for yellow panels:
> > https://www.blogger.com/comment.g?
blogID=17775202&postID=7313555627935826490 
> > <https://www.blogger.com/comment.g?
blogID=17775202&postID=7313555627935826490>"

> > http://www.muffwiggler.com/forum/viewtopic.php?t=1198 
> > <http://www.muffwiggler.com/forum/viewtopic.php?t=1198>
> > Also asked on the "Modular Synth Panels" Yahoo group.
> >
> > Reasonable opinions are welcome.
> >
> >
>

definitely yellow. 

i need an envelope, and despite there being better facilities on one
from doepfer that suits my needs, i'm buying mfb because it's black.

nb i am a total whore for that kind of thing, and replace grey doepfer
knobs with more interesting ones, even though theyre then more cramped
and less usable.

Forgive me if some of you appearance-freaks don't like this, but I
wanted to make my panels really stand out. So I am leaning toward
Metasonix yellow.

what drugs did you give them before the consensus.:-)

.....not sure about the yello thing but I am one who love the silver 
faceplates.
Im not big on different looking face plates :-(


metasonix2000 wrote:

>
> As you may have seen elsewhere, I'm working on making new tube modules
> in Euro/Doepfer format, probably for introduction early 2009.
>
> They will be mechanically similar to Cwejman, except with big fat
> vacuum tubes poking out of holes in the front panel. Probably 28HP
> size panels for most functions. They won't protrude more than about 1"
> behind the panel, but those tubes will stick out as mucha s 2",
> depending on the tube type (and they are allll over the place in
> height--BN6 tubes are especially tall).
>
> Power supplies will be an issue--most of the tubes I'm contemplating
> will need +5v power at an amp or so per module, from an added supply
> (the little +5 supplies that Doepfer sells will be hopelessly
> inadequate). To run heaters. They suck a LOT of current.
>
> A VCO is in the works--I have a new circuit that produces a really
> nice sinewave, clippable to a square wave, with a very wide pitch
> control range--much wider than the thyratron VCOs we've made to date.
> Linearity looks good and it might have V/octave CV control (if I can
> cram it onto that little board).
>
> Same circuit can be modified slightly to be used as a bandpass filter.
> Also plan eventual versions of the TM-6 filter, TM-1 waveshaper, a
> VCA/distortion using remote-cutoff pentodes, and possibly other
> things. No CV sources, just audio signal sources and processors. These
> will be fairly simple designs, for obvious reasons....don't even think
> about triangle waveforms or state-variable filters, such things can't
> be made in practical form with tubes. Tube distortion, no problem!
>
> Forgive me if some of you appearance-freaks don't like this, but I
> wanted to make my panels really stand out. So I am leaning toward
> Metasonix yellow.
>
> I've asked about this on other forums, and the consensus was
> 95% for yellow panels:
> https://www.blogger.com/comment.g?blogID=17775202&postID=7313555627935826490 
> <https://www.blogger.com/comment.g?blogID=17775202&postID=7313555627935826490>"
> http://www.muffwiggler.com/forum/viewtopic.php?t=1198 
> <http://www.muffwiggler.com/forum/viewtopic.php?t=1198>
> Also asked on the "Modular Synth Panels" Yahoo group.
>
> Reasonable opinions are welcome.
>
>

If you sold silver and yellow faceplates you would clean up !
>
>

this is going to be soo cool - just cant wait to get my fingers burnt
on those tubes. and yes, yellow faceplates will for sure look cool and
stick out.
hope the 5V problem will be solved somehow, so that the modules can be
used with the doepfer powersupplies.


hel



--- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@...> wrote:
>
> As you may have seen elsewhere, I'm working on making new tube modules
> in Euro/Doepfer format, probably for introduction early 2009.
> 
> They will be mechanically similar to Cwejman, except with big fat
> vacuum tubes poking out of holes in the front panel. Probably 28HP
> size panels for most functions. They won't protrude more than about 1"
> behind the panel, but those tubes will stick out as mucha s 2",
> depending on the tube type (and they are allll over the place in
> height--BN6 tubes are especially tall).
> 
> Power supplies will be an issue--most of the tubes I'm contemplating
> will need +5v power at an amp or so per module, from an added supply
> (the little +5 supplies that Doepfer sells will be hopelessly
> inadequate). To run heaters. They suck a LOT of current.
> 
> A VCO is in the works--I have a new circuit that produces a really
> nice sinewave, clippable to a square wave, with a very wide pitch
> control range--much wider than the thyratron VCOs we've made to date.
> Linearity looks good and it might have V/octave CV control (if I can
> cram it onto that little board).
> 
> Same circuit can be modified slightly to be used as a bandpass filter.
> Also plan eventual versions of the TM-6 filter, TM-1 waveshaper, a
> VCA/distortion using remote-cutoff pentodes, and possibly other
> things. No CV sources, just audio signal sources and processors. These
> will be fairly simple designs, for obvious reasons....don't even think
> about triangle waveforms or state-variable filters, such things can't
> be made in practical form with tubes. Tube distortion, no problem!
> 
> Forgive me if some of you appearance-freaks don't like this, but I
> wanted to make my panels really stand out. So I am leaning toward
> Metasonix yellow. 
> 
> I've asked about this on other forums, and the consensus was
> 95% for yellow panels:
>
https://www.blogger.com/comment.g?blogID=17775202&postID=7313555627935826490"

> http://www.muffwiggler.com/forum/viewtopic.php?t=1198
> Also asked on the "Modular Synth Panels" Yahoo group.
> 
> Reasonable opinions are welcome.
>

...that is great news!

2008/7/14 metasonix2000 <synth@metasonix.com>:

    As you may have seen elsewhere, I'm working on making new tube modules
    in Euro/Doepfer format, probably for introduction early 2009. (...) So I
am leaning toward
    Metasonix yellow.

...any colour you think they should have! - my opinion on this topic
generally: I like it when the manufacturer shows its own character even on
the frontplate, and I dont think that making all panels look the same makes
it any better. Have Doepfer in silver, MFB in black, Cwejman is fine in
greenish-grey and now I am happy to hear that I'll get some yellow soon
also...

;o)


[Non-text portions of this message have been removed]

What a wonderful idea. 
 
And I think the yellow panels would be great.
 
Question,
 
with the tubes protruding from the panel are they running hot, enough to
either singe a hand or a patch cable?
 
Thanks
 
David
 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * *
David Salter
Head SSG Nordics & Baltic's

Thomson Reuters

O +44 (0)20 7542 2402X 52402
M 07990562402

david.salter@thomsonreuters.com
thomsonreuters.com <http://thomsonreuters.com/> 

 

________________________________

From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com]
On Behalf Of metasonix2000
Sent: 13 July 2008 23:51
To: Doepfer_a100@yahoogroups.com
Subject: [Doepfer_a100] working on Euro-format tube modules for next
year



As you may have seen elsewhere, I'm working on making new tube modules
in Euro/Doepfer format, probably for introduction early 2009.

They will be mechanically similar to Cwejman, except with big fat
vacuum tubes poking out of holes in the front panel. Probably 28HP
size panels for most functions. They won't protrude more than about 1"
behind the panel, but those tubes will stick out as mucha s 2",
depending on the tube type (and they are allll over the place in
height--BN6 tubes are especially tall).

Power supplies will be an issue--most of the tubes I'm contemplating
will need +5v power at an amp or so per module, from an added supply
(the little +5 supplies that Doepfer sells will be hopelessly
inadequate). To run heaters. They suck a LOT of current.

A VCO is in the works--I have a new circuit that produces a really
nice sinewave, clippable to a square wave, with a very wide pitch
control range--much wider than the thyratron VCOs we've made to date.
Linearity looks good and it might have V/octave CV control (if I can
cram it onto that little board).

Same circuit can be modified slightly to be used as a bandpass filter.
Also plan eventual versions of the TM-6 filter, TM-1 waveshaper, a
VCA/distortion using remote-cutoff pentodes, and possibly other
things. No CV sources, just audio signal sources and processors. These
will be fairly simple designs, for obvious reasons....don't even think
about triangle waveforms or state-variable filters, such things can't
be made in practical form with tubes. Tube distortion, no problem!

Forgive me if some of you appearance-freaks don't like this, but I
wanted to make my panels really stand out. So I am leaning toward
Metasonix yellow. 

I've asked about this on other forums, and the consensus was
95% for yellow panels:
https://www.blogger.com/comment.g?blogID=17775202&postID=731355562793582
6490
<https://www.blogger.com/comment.g?blogID=17775202&postID=73135556279358
26490> "
http://www.muffwiggler.com/forum/viewtopic.php?t=1198
<http://www.muffwiggler.com/forum/viewtopic.php?t=1198> 
Also asked on the "Modular Synth Panels" Yahoo group.

Reasonable opinions are welcome.



 


[Non-text portions of this message have been removed]

> Hope you don't mind Eric, but I've bought the panel question up on 
> another forum: 
> http://www.modularsynth.net/viewtopic.php?t=1557
> Not sure if we'll get any responses. We can create a poll there as 
> well if you want to see some actual votes. 

Thanks! Yes, a poll would be ok.


> > Hello thing but I am one who love the 
> silver 
> > faceplates.
> > Im not big on different looking face plates :-(

Well, sorry dude, you're in the minority....

> And I think the yellow panels would be great.
> with the tubes protruding from the panel are they running hot, enough to
> either singe a hand or a patch cable?

Thanks all. Nice to see someone cares enough to answer.

No, the tubes won't get hot enough to melt patchcords or burn your
fingers.
At most, they will get a little too hot to hold with your fingers for
extended periods. So don't hold them.

Convective cooling is critical here, thus the exposure. If they were
enclosed in a cabinet they would run a lot hotter.

That VCO circuit is a really cute thing. I found it in a 1964
textbook. It was called a "tuneable amplifier", even though it doesn't
even provide any gain, in fact it attenuates the input signal a LOT.
Control it with a 5C3 Vactrol, and it makes a strangely linear
VCO.....I didn't expect that!

> We have about 100 +5V/2500mA supplies left which we add for free upon
> request to any other order. Details on our website in the Sonderliste
> (special list). But these supplies are suitable only for 230V mains
voltage
> Best wishes
> Dieter Doepfer

There, you see? It's not a big deal. Most of the Doepfer (and Analogue
Systems, and what-have-you) cabinets have plenty of space inside for
5v power supplies. 

Thank you Dieter....

The hobbyist market abounds with cheap supplies.
For example, this one will run heaters for at least 3 tube modules:
http://www.mpja.com/prodinfo.asp?number=17430+PS

great news about Metasonix stuff going euro, indeed!

i do not care about the yelow colour, btw...



Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner
www. parallel - worlds - music. com
www. myspace. com/ parallelworldsmusic
www. myspace. com/ interconnectedmusic
www. myspace. com/ memorygeist
www. DiN. org. uk
www. musicamaximamagnetica. com
www. shimarecords. co. uk
www. rubberrecords. gr
Athens - Greece

--- On Mon, 7/14/08, David Salter <david.salter@thomsonreuters.com> wrote:

From: David Salter <david.salter@thomsonreuters.com>
Subject: RE: [Doepfer_a100] working on Euro-format tube modules for next year
To: Doepfer_a100@yahoogroups.com
Date: Monday, July 14, 2008, 10:25 AM






What a wonderful idea. 

And I think the yellow panels would be great.

Question,

with the tubes protruding from the panel are they running hot, enough to
either singe a hand or a patch cable?

Thanks

David

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * *
David Salter
Head SSG Nordics & Baltic's

Thomson Reuters

O +44 (0)20 7542 2402X 52402
M 07990562402

david.salter@ thomsonreuters. com
thomsonreuters. com <http://thomsonreute rs.com/> 

____________ _________ _________ __

From: Doepfer_a100@ yahoogroups. com [mailto:Doepfer_a100@ yahoogroups. com]
On Behalf Of metasonix2000
Sent: 13 July 2008 23:51
To: Doepfer_a100@ yahoogroups. com
Subject: [Doepfer_a100] working on Euro-format tube modules for next
year

As you may have seen elsewhere, I'm working on making new tube modules
in Euro/Doepfer format, probably for introduction early 2009.

They will be mechanically similar to Cwejman, except with big fat
vacuum tubes poking out of holes in the front panel. Probably 28HP
size panels for most functions. They won't protrude more than about 1"
behind the panel, but those tubes will stick out as mucha s 2",
depending on the tube type (and they are allll over the place in
height--BN6 tubes are especially tall).

Power supplies will be an issue--most of the tubes I'm contemplating
will need +5v power at an amp or so per module, from an added supply
(the little +5 supplies that Doepfer sells will be hopelessly
inadequate). To run heaters. They suck a LOT of current.

A VCO is in the works--I have a new circuit that produces a really
nice sinewave, clippable to a square wave, with a very wide pitch
control range--much wider than the thyratron VCOs we've made to date.
Linearity looks good and it might have V/octave CV control (if I can
cram it onto that little board).

Same circuit can be modified slightly to be used as a bandpass filter.
Also plan eventual versions of the TM-6 filter, TM-1 waveshaper, a
VCA/distortion using remote-cutoff pentodes, and possibly other
things. No CV sources, just audio signal sources and processors. These
will be fairly simple designs, for obvious reasons....don' t even think
about triangle waveforms or state-variable filters, such things can't
be made in practical form with tubes. Tube distortion, no problem!

Forgive me if some of you appearance-freaks don't like this, but I
wanted to make my panels really stand out. So I am leaning toward
Metasonix yellow. 

I've asked about this on other forums, and the consensus was
95% for yellow panels:
https://www. blogger.com/ comment.g? blogID=17775202& postID=731355562 793582
6490
<https://www. blogger.com/ comment.g? blogID=17775202& postID=731355562 79358
26490> "
http://www.muffwigg ler.com/forum/ viewtopic. php?t=1198
<http://www.muffwigg ler.com/forum/ viewtopic. php?t=1198> 
Also asked on the "Modular Synth Panels" Yahoo group.

Reasonable opinions are welcome.

[Non-text portions of this message have been removed]

> this is going to be soo cool - just cant wait to get my fingers burnt
> on those tubes. and yes, yellow faceplates will for sure look cool and
> stick out.
> hope the 5V problem will be solved somehow, so that the modules can be
> used with the doepfer powersupplies.

We have about 100 +5V/2500mA supplies left which we add for free upon
request to any other order. Details on our website in the Sonderliste
(special list). But these supplies are suitable only for 230V mains voltage
!

Best wishes
Dieter Doepfer

You'll probably escape graphics like "anal probe" but Metsaonix is
going to stick to a panel colour which shall resemble to a body fluid.
Or am I mistaken on Eric's intention here? Best rgds, Ingo

--- In Doepfer_a100@yahoogroups.com, "Andreas- theCovertOperators.Org"
<a@...> wrote:

>
> metasonix2000 skrev:
> > Thanks all. Nice to see someone cares enough to answer.
> Since you're asking our opinions, yellow is fine for me, I like
> different coloured panels, it's the
> "graphics" I personally shy away from. I might have bought metasonix a
> bit earlier if that department had been different. I still respect your
> "artistic" choice on the matter, I just choose to vote with my wallet
> there :)
> 
> Well, I guess a cramped Euro with a huge tube in it won't leave much
> panel space left for anal probes and such?
> 
> Andreas
>

metasonix2000 skrev:
> Thanks all. Nice to see someone cares enough to answer.
Since you're asking our opinions, yellow is fine for me, I like
different coloured panels, it's the
"graphics" I personally shy away from. I might have bought metasonix a
bit earlier if that department had been different. I still respect your
"artistic" choice on the matter, I just choose to vote with my wallet
there :)

Well, I guess a cramped Euro with a huge tube in it won't leave much
panel space left for anal probes and such?

Andreas

This is great. Call them whatever you want, and paint them however you
like. 
Doug

i love this!  i can't wait.  it will be fun for me to attempt to DIY 
a power supply like this to the doepfer busboard.  you'll use the 
same ribbon connector?

i second the yellow, the goofier-looking i can get my system, the 
better.  and tubes poking out...yes yes yes!  i'm for the distortion 
type modules, please work on one or two of those.

-tom

--- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@...> 
wrote:
>
> > We have about 100 +5V/2500mA supplies left which we add for free 
upon
> > request to any other order. Details on our website in the 
Sonderliste
> > (special list). But these supplies are suitable only for 230V 
mains
> voltage
> > Best wishes
> > Dieter Doepfer
> 
> There, you see? It's not a big deal. Most of the Doepfer (and 
Analogue

> Systems, and what-have-you) cabinets have plenty of space inside for
> 5v power supplies. 
> 
> Thank you Dieter....
> 
> The hobbyist market abounds with cheap supplies.
> For example, this one will run heaters for at least 3 tube modules:
> http://www.mpja.com/prodinfo.asp?number=17430+PS
>

From a business view, I'd go for the least common denominator.  Make your modules 
compatible to existing systems as much as possible. And that includes making it not only 
electrically, but also VISUALLY compatible.

Nobody's going to buy your modules because of piss-yellow panels and names like Anal 
Probe. They're going to by it because you make great products. However, I can see some 
potential customers being turned off with loud obnoxious colored panels in their Euro 
systems. That negative could very well affect buying decisions.

On the other hand I really don't see people NOT buying you modules because it matches 
the rest of their system. So there's really no business advantage to marginalizing your Euro 
products by painting them yellow.


--- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@...> wrote:

>
> 
> > Hope you don't mind Eric, but I've bought the panel question up on 
> > another forum: 
> > http://www.modularsynth.net/viewtopic.php?t=1557
> > Not sure if we'll get any responses. We can create a poll there as 
> > well if you want to see some actual votes. 
> 
> Thanks! Yes, a poll would be ok.
> 
> 
> > > Hello thing but I am one who love the 
> > silver 
> > > faceplates.
> > > Im not big on different looking face plates :-(
> 
> Well, sorry dude, you're in the minority....
>

> i love this!  i can't wait.  it will be fun for me to attempt to DIY
> a power supply like this to the doepfer busboard.  you'll use the
> same ribbon connector?

No. It's a three pin DIN connector (as shown in the picture) that has
available GND, +5V/2500mA and -24V/50mA. You have to remove the DIN
connector and add a suitable connector for the A-100 bus (e.g. two 6.3 mm
flat connectors that fit to the corresponding terminals of the A-100 bus
board). The -24V are unused. Please do not connect the -24V to the A-100 bus
as this will damage modules !

Best wishes
Dieter Doepfer

On Jul 14, 2008, at 12:25 AM, David Salter wrote:

> What a wonderful idea.
>
> And I think the yellow panels would be great.
>
> Question,
>
> with the tubes protruding from the panel are they running hot,  
> enough to
> either singe a hand or a patch cable?
>

This and if they stick out too much they are a no-go for me - I have  
the portable cabinets and the lids still have to fit.

-James

I use the portable doepfer cabinets - they will have to allow  
clearance for the lids for them to work for me.

-James

On Jul 14, 2008, at 3:10 AM, metasonix2000 wrote:

>
>> And I think the yellow panels would be great.
>> with the tubes protruding from the panel are they running hot,  
>> enough to
>> either singe a hand or a patch cable?
>
> Thanks all. Nice to see someone cares enough to answer.
>
> No, the tubes won't get hot enough to melt patchcords or burn your
> fingers.
> At most, they will get a little too hot to hold with your fingers for
> extended periods. So don't hold them.
>
> Convective cooling is critical here, thus the exposure. If they were
> enclosed in a cabinet they would run a lot hotter.
>
> That VCO circuit is a really cute thing. I found it in a 1964
> textbook. It was called a "tuneable amplifier", even though it doesn't
> even provide any gain, in fact it attenuates the input signal a LOT.
> Control it with a 5C3 Vactrol, and it makes a strangely linear
> VCO.....I didn't expect that!
>
>

--- In Doepfer_a100@yahoogroups.com, James Husted
<the_ersatz_planet@...> wrote:
> I use the portable doepfer cabinets - they will have to allow  
> clearance for the lids for them to work for me.

Okay....just how much clearance is in the portable cabinet lids?
If it's at least 2 inches, no problem.

Hi, 

A new poll has been created on the following forum: 

http://www.modularsynth.net/viewtopic.php?t=1567

It will run for 2 weeks. Tried to make it general, something that 
could apply to any format/manufacturer.

The VCO you've mentioned sounds great. Looking forward to seeing some 
designs. 

Regards, 

Adam 

--- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@...> 
wrote:
>
> 
> > Hope you don't mind Eric, but I've bought the panel question up 
on 
> > another forum: 
> > http://www.modularsynth.net/viewtopic.php?t=1557
> > Not sure if we'll get any responses. We can create a poll there 
as 

> > well if you want to see some actual votes. 
> 
> Thanks! Yes, a poll would be ok.
> 
> 
> > > Hello thing but I am one who love the 
> > silver 
> > > faceplates.
> > > Im not big on different looking face plates :-(
> 
> Well, sorry dude, you're in the minority....
>

I think you also need to find an all inclusive solution to the 5 volt
supply problem provided by you. 

Most people don't have the time/don't feel like they know how to mess
around with DIY stuff/ 3rd party power supplies. If you don't is going
to tremendously knock down your customer base to a small percentage of
owners that are used to doing DIY. 



--- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@...> wrote:
>
> 
> > And I think the yellow panels would be great.
> > with the tubes protruding from the panel are they running hot,
enough to

> > either singe a hand or a patch cable?
> 
> Thanks all. Nice to see someone cares enough to answer.
> 
> No, the tubes won't get hot enough to melt patchcords or burn your
> fingers.
> At most, they will get a little too hot to hold with your fingers for
> extended periods. So don't hold them.
> 
> Convective cooling is critical here, thus the exposure. If they were
> enclosed in a cabinet they would run a lot hotter.
> 
> That VCO circuit is a really cute thing. I found it in a 1964
> textbook. It was called a "tuneable amplifier", even though it doesn't
> even provide any gain, in fact it attenuates the input signal a LOT.
> Control it with a 5C3 Vactrol, and it makes a strangely linear
> VCO.....I didn't expect that!
>

Drugggsss are gooooooddddd......
;P
--- In Doepfer_a100@yahoogroups.com, amnesia <amnesia@...> wrote:
>
> Forgive me if some of you appearance-freaks don't like this, but I
> wanted to make my panels really stand out. So I am leaning toward
> Metasonix yellow.
> 
> what drugs did you give them before the consensus.:-)
> 
> .....not sure about the yello thing but I am one who love the silver 
> faceplates.
> Im not big on different looking face plates :-(
> 
> 
> metasonix2000 wrote:
> >
> > As you may have seen elsewhere, I'm working on making new tube modules
> > in Euro/Doepfer format, probably for introduction early 2009.
> >
> > They will be mechanically similar to Cwejman, except with big fat
> > vacuum tubes poking out of holes in the front panel. Probably 28HP
> > size panels for most functions. They won't protrude more than about 1"
> > behind the panel, but those tubes will stick out as mucha s 2",
> > depending on the tube type (and they are allll over the place in
> > height--BN6 tubes are especially tall).
> >
> > Power supplies will be an issue--most of the tubes I'm contemplating
> > will need +5v power at an amp or so per module, from an added supply
> > (the little +5 supplies that Doepfer sells will be hopelessly
> > inadequate). To run heaters. They suck a LOT of current.
> >
> > A VCO is in the works--I have a new circuit that produces a really
> > nice sinewave, clippable to a square wave, with a very wide pitch
> > control range--much wider than the thyratron VCOs we've made to date.
> > Linearity looks good and it might have V/octave CV control (if I can
> > cram it onto that little board).
> >
> > Same circuit can be modified slightly to be used as a bandpass filter.
> > Also plan eventual versions of the TM-6 filter, TM-1 waveshaper, a
> > VCA/distortion using remote-cutoff pentodes, and possibly other
> > things. No CV sources, just audio signal sources and processors. These
> > will be fairly simple designs, for obvious reasons....don't even think
> > about triangle waveforms or state-variable filters, such things can't
> > be made in practical form with tubes. Tube distortion, no problem!
> >
> > Forgive me if some of you appearance-freaks don't like this, but I
> > wanted to make my panels really stand out. So I am leaning toward
> > Metasonix yellow.
> >
> > I've asked about this on other forums, and the consensus was
> > 95% for yellow panels:
> > https://www.blogger.com/comment.g?
blogID=17775202&postID=7313555627935826490 
> > <https://www.blogger.com/comment.g?
blogID=17775202&postID=7313555627935826490>"

> > http://www.muffwiggler.com/forum/viewtopic.php?t=1198 
> > <http://www.muffwiggler.com/forum/viewtopic.php?t=1198>
> > Also asked on the "Modular Synth Panels" Yahoo group.
> >
> > Reasonable opinions are welcome.
> >
> >
>

i don't currently use the 5v for any of my modules.  if my memory
serves correctly, there is one rail used by the full-sized 16-pin
(opposed to the 10 of 8 pin) connector that carries +5vDC as needed, yes?

so the trick would be to get +5DC onto that rail at several amperes
depending on which metasonix modules i want...yes?

so my question to eric is...how will the modules be designed to
recieve their +5v?  standard eurorack ribbon?  i think that makes the
most sense and next step after that would be how to get +5DC onto the
rail.  i'd be into DIY-ing it, but i would also need to figure out how
to get the 5v transformer to drink off the same mains that feeds the
+/-12v transformer i power my modules with.  having two main ins seems
gratuitous.

since harvestman recommends the 5v too, this may be something that
could benefit all eurorack users if there was a real easy DIY or
something.

please feel free anyone to correct my interpretation power rail
schematic. 

-tom 


--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
> > i love this!  i can't wait.  it will be fun for me to attempt to DIY
> > a power supply like this to the doepfer busboard.  you'll use the
> > same ribbon connector?
> 
> No. It's a three pin DIN connector (as shown in the picture) that has
> available GND, +5V/2500mA and -24V/50mA. You have to remove the DIN
> connector and add a suitable connector for the A-100 bus (e.g. two
6.3 mm
> flat connectors that fit to the corresponding terminals of the A-100 bus
> board). The -24V are unused. Please do not connect the -24V to the
A-100 bus

> as this will damage modules !
> 
> Best wishes
> Dieter Doepfer
>

Yes Eric!
Please keep the DIRTAAHHHH names and graphixxx... honnestly I like the yellow... But 
silver and yellow, as I stated in Metasonix could be even cooler... and sneakier for the 
eyes!
Can<t wait to see those there! Oh and are you going to have some stuff at Moog Audio 
again in Montreal? "like back then"?

g.

--- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@...> wrote:

>
> 
> > And I think the yellow panels would be great.
> > with the tubes protruding from the panel are they running hot, enough to
> > either singe a hand or a patch cable?
> 
> Thanks all. Nice to see someone cares enough to answer.
> 
> No, the tubes won't get hot enough to melt patchcords or burn your
> fingers.
> At most, they will get a little too hot to hold with your fingers for
> extended periods. So don't hold them.
> 
> Convective cooling is critical here, thus the exposure. If they were
> enclosed in a cabinet they would run a lot hotter.
> 
> That VCO circuit is a really cute thing. I found it in a 1964
> textbook. It was called a "tuneable amplifier", even though it doesn't
> even provide any gain, in fact it attenuates the input signal a LOT.
> Control it with a 5C3 Vactrol, and it makes a strangely linear
> VCO.....I didn't expect that!
>

that's correct.
 
i cannot make, or connect, an extra 5volts psu to the doepfer rack in order to mount the metasonix modules.
 
i'd much prefer another solution, with which i can mount the metasonix modules right away to  my doepfer rack.


Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner
www. parallel - worlds - music. com
www. myspace. com/ parallelworldsmusic
www. myspace. com/ interconnectedmusic
www. myspace. com/ memorygeist
www. DiN. org. uk
www. musicamaximamagnetica. com
www. shimarecords. co. uk
www. rubberrecords. gr
Athens - Greece

--- On Tue, 7/15/08, Carlos <bushwick@gmail.com> wrote:

From: Carlos <bushwick@gmail.com>
Subject: [Doepfer_a100] Re: working on Euro-format tube modules for next year
To: Doepfer_a100@yahoogroups.com
Date: Tuesday, July 15, 2008, 3:12 PM






I think you also need to find an all inclusive solution to the 5 volt
supply problem provided by you. 

Most people don't have the time/don't feel like they know how to mess
around with DIY stuff/ 3rd party power supplies. If you don't is going
to tremendously knock down your customer base to a small percentage of
owners that are used to doing DIY. 

--- In Doepfer_a100@ yahoogroups. com, "metasonix2000" <synth@...> wrote:
>
> 
> > And I think the yellow panels would be great.
> > with the tubes protruding from the panel are they running hot,
enough to
> > either singe a hand or a patch cable?
> 
> Thanks all. Nice to see someone cares enough to answer.
> 
> No, the tubes won't get hot enough to melt patchcords or burn your
> fingers.
> At most, they will get a little too hot to hold with your fingers for
> extended periods. So don't hold them.
> 
> Convective cooling is critical here, thus the exposure. If they were
> enclosed in a cabinet they would run a lot hotter.
> 
> That VCO circuit is a really cute thing. I found it in a 1964
> textbook. It was called a "tuneable amplifier", even though it doesn't
> even provide any gain, in fact it attenuates the input signal a LOT.
> Control it with a 5C3 Vactrol, and it makes a strangely linear
> VCO.....I didn't expect that!
>

 














      

[Non-text portions of this message have been removed]

Perhaps it would be best to offer a 6U Metasonix subrack that also 
safely accomodates Doepfer, et al modules.

Beyond this, perhaps offing the power supply (and busboards?) 
separately for retrofitting into Doepfer racks (or other DIY 
applications) would be enough to make everyone happy. 

Doug
 
>  
> i cannot make, or connect, an extra 5volts psu to the doepfer rack 
in order to mount the metasonix modules.
>  
> i'd much prefer another solution, with which i can mount the 
metasonix modules right away to  my doepfer rack.
>

> i don't currently use the 5v for any of my modules.  if my memory
> serves correctly, there is one rail used by the full-sized 16-pin
> (opposed to the 10 of 8 pin) connector that carries +5vDC as needed,
yes?

Right. However....if you mount 3 of these modules in a Doepfer
rack, that will add up to perhaps 1800 mA of load. That might
be better delivered by separate wiring, although I think the
existing 16-pin power busses should be able to handle a couple
tube modules.

NOW, do you see why there are no tube Euro modules? 

It's POSSIBLE to use +-12v only. It requires the usage of
tubes with 12v or other "odd" heater voltages, which are 
easy to get but not as commonplace as 6-volt heater versions. 

(I'd like to use 6GH8s if at ALL possible. At one time, 
the 6GH8 was the one tube in the world manufactured in
the largest quantities---
mainly because it was used in TV sets that ran them
very hard, and made for a short lifetime.
Lud Sibley of the Tube Collector's Association owns the 
RCA corporate archive. He did the research in the files
and found that in 1960-61, RCA was making FOUR MILLION
6GH8s PER MONTH. By comparison, they made "only" about 
100,000 12AX7s per month. So, leftover 6GH8s are 
everywhere today.)

And the total power consumption will be the same anyway. 
A typical two-tube module will use about 3-4 watts just 
for tube heaters, regardless of where the power comes from.
So it's your choice:

1) get the cab modified to hold an extra +5v supply,
or
2) use large +-12 power supplies to run the tube load.

And there's another headache:
Want a Frac version of these modules? Well, Frac systems
usually have +-15v. No problem for the solid-state support
circuits. But the tube heaters will HAVE to have optional 
dropping resistors to keep their voltages down. 

More complexity, more PC board space.

Here's an option: make a power connector on the panel FRONT and include a wall wart 
that can supply the 6v (AC or DC) for the tube heaters. 

The wall wart can be cheap since I assume it doesn't have to be regulated. You can still 
provide internal connections for those willing to wire up another PS themselves. The front 
panel can have an additional connection for daisy-chaining the heater voltage to 
additional modules.

This option could now allow every Erro and Frac user to easily add your cool tube modules 
to their systems.

--- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@...> wrote:

>
> > i don't currently use the 5v for any of my modules.  if my memory
> > serves correctly, there is one rail used by the full-sized 16-pin
> > (opposed to the 10 of 8 pin) connector that carries +5vDC as needed,
> yes?
> 
> Right. However....if you mount 3 of these modules in a Doepfer
> rack, that will add up to perhaps 1800 mA of load. That might
> be better delivered by separate wiring, although I think the
> existing 16-pin power busses should be able to handle a couple
> tube modules.
> 
> NOW, do you see why there are no tube Euro modules? 
> 
> It's POSSIBLE to use +-12v only. It requires the usage of
> tubes with 12v or other "odd" heater voltages, which are 
> easy to get but not as commonplace as 6-volt heater versions. 
> 
> (I'd like to use 6GH8s if at ALL possible. At one time, 
> the 6GH8 was the one tube in the world manufactured in
> the largest quantities---
> mainly because it was used in TV sets that ran them
> very hard, and made for a short lifetime.
> Lud Sibley of the Tube Collector's Association owns the 
> RCA corporate archive. He did the research in the files
> and found that in 1960-61, RCA was making FOUR MILLION
> 6GH8s PER MONTH. By comparison, they made "only" about 
> 100,000 12AX7s per month. So, leftover 6GH8s are 
> everywhere today.)
> 
> And the total power consumption will be the same anyway. 
> A typical two-tube module will use about 3-4 watts just 
> for tube heaters, regardless of where the power comes from.
> So it's your choice:
> 
> 1) get the cab modified to hold an extra +5v supply,
> or
> 2) use large +-12 power supplies to run the tube load.
> 
> And there's another headache:
> Want a Frac version of these modules? Well, Frac systems
> usually have +-15v. No problem for the solid-state support
> circuits. But the tube heaters will HAVE to have optional 
> dropping resistors to keep their voltages down. 
> 
> More complexity, more PC board space.
>

a wall wart seems like a ok solution.  but what i'd like to do is run
the 5v transformer off of the same "mains-in" that the +/-12v runs off
of.  i think that's what most people with modulars would want to do.

since the rail already exists on the bus board for +5v, it's just a
matter of supplying the current needed to feed the thirsty tubes.

having separate power supplies for different modules would be kind of
like just buying the stomp-box type metasonix modules.  the pleasure
of euro-shaped metasonix would be that it's organized into your
system.  no adaptors, no wall warts.  just flip your system on and play.

i would happily DIY a transformer into my system, since it could also
help with my harvestman modules.  perhaps against better judgement
i've already done work with 120v circuits (and i'm no whiz by a
stretch - i write this as someone not dead or fried by voltages
alive).  but perhaps eric or someone else would be willing to sell
something that can get the high current DC5v down to the bus rail
through a standard female ribbon connector, using the same mains
on/off switch as the bipolar12v? 

-t 

--- In Doepfer_a100@yahoogroups.com, "laryn91" <caymus91@...> wrote:
>
> Here's an option: make a power connector on the panel FRONT and
include a wall wart 
> that can supply the 6v (AC or DC) for the tube heaters. 
> 
> The wall wart can be cheap since I assume it doesn't have to be
regulated. You can still 
> provide internal connections for those willing to wire up another PS
themselves. The front 
> panel can have an additional connection for daisy-chaining the
heater voltage to 
> additional modules.
> 
> This option could now allow every Erro and Frac user to easily add
your cool tube modules 

> to their systems.
> 
> --- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@> wrote:
> >
> > > i don't currently use the 5v for any of my modules.  if my memory
> > > serves correctly, there is one rail used by the full-sized 16-pin
> > > (opposed to the 10 of 8 pin) connector that carries +5vDC as needed,
> > yes?
> > 
> > Right. However....if you mount 3 of these modules in a Doepfer
> > rack, that will add up to perhaps 1800 mA of load. That might
> > be better delivered by separate wiring, although I think the
> > existing 16-pin power busses should be able to handle a couple
> > tube modules.
> > 
> > NOW, do you see why there are no tube Euro modules? 
> > 
> > It's POSSIBLE to use +-12v only. It requires the usage of
> > tubes with 12v or other "odd" heater voltages, which are 
> > easy to get but not as commonplace as 6-volt heater versions. 
> > 
> > (I'd like to use 6GH8s if at ALL possible. At one time, 
> > the 6GH8 was the one tube in the world manufactured in
> > the largest quantities---
> > mainly because it was used in TV sets that ran them
> > very hard, and made for a short lifetime.
> > Lud Sibley of the Tube Collector's Association owns the 
> > RCA corporate archive. He did the research in the files
> > and found that in 1960-61, RCA was making FOUR MILLION
> > 6GH8s PER MONTH. By comparison, they made "only" about 
> > 100,000 12AX7s per month. So, leftover 6GH8s are 
> > everywhere today.)
> > 
> > And the total power consumption will be the same anyway. 
> > A typical two-tube module will use about 3-4 watts just 
> > for tube heaters, regardless of where the power comes from.
> > So it's your choice:
> > 
> > 1) get the cab modified to hold an extra +5v supply,
> > or
> > 2) use large +-12 power supplies to run the tube load.
> > 
> > And there's another headache:
> > Want a Frac version of these modules? Well, Frac systems
> > usually have +-15v. No problem for the solid-state support
> > circuits. But the tube heaters will HAVE to have optional 
> > dropping resistors to keep their voltages down. 
> > 
> > More complexity, more PC board space.
> >
>

How big do you suppose the market is for exotic analog synthesizer modules that require 
major DIY power supply hacking just to get them to work.

And what retailer in their right mind would take a such a burden  to sell a product like 
that. If it's not going to work out of the box, I'm guessing most people will pass.


--- In Doepfer_a100@yahoogroups.com, "thomasborax" <thomasborax@...> wrote:

>
> a wall wart seems like a ok solution.  but what i'd like to do is run
> the 5v transformer off of the same "mains-in" that the +/-12v runs off
> of.  i think that's what most people with modulars would want to do.
> 
> since the rail already exists on the bus board for +5v, it's just a
> matter of supplying the current needed to feed the thirsty tubes.
> 
> having separate power supplies for different modules would be kind of
> like just buying the stomp-box type metasonix modules.  the pleasure
> of euro-shaped metasonix would be that it's organized into your
> system.  no adaptors, no wall warts.  just flip your system on and play.
> 
> i would happily DIY a transformer into my system, since it could also
> help with my harvestman modules.  perhaps against better judgement
> i've already done work with 120v circuits (and i'm no whiz by a
> stretch - i write this as someone not dead or fried by voltages
> alive).  but perhaps eric or someone else would be willing to sell
> something that can get the high current DC5v down to the bus rail
> through a standard female ribbon connector, using the same mains
> on/off switch as the bipolar12v? 
> 
> -t 
> 
> --- In Doepfer_a100@yahoogroups.com, "laryn91" <caymus91@> wrote:
> >
> > Here's an option: make a power connector on the panel FRONT and
> include a wall wart 
> > that can supply the 6v (AC or DC) for the tube heaters. 
> > 
> > The wall wart can be cheap since I assume it doesn't have to be
> regulated. You can still 
> > provide internal connections for those willing to wire up another PS
> themselves. The front 
> > panel can have an additional connection for daisy-chaining the
> heater voltage to 
> > additional modules.
> > 
> > This option could now allow every Erro and Frac user to easily add
> your cool tube modules 
> > to their systems.
> > 
> > --- In Doepfer_a100@yahoogroups.com, "metasonix2000" <synth@> wrote:
> > >
> > > > i don't currently use the 5v for any of my modules.  if my memory
> > > > serves correctly, there is one rail used by the full-sized 16-pin
> > > > (opposed to the 10 of 8 pin) connector that carries +5vDC as needed,
> > > yes?
> > > 
> > > Right. However....if you mount 3 of these modules in a Doepfer
> > > rack, that will add up to perhaps 1800 mA of load. That might
> > > be better delivered by separate wiring, although I think the
> > > existing 16-pin power busses should be able to handle a couple
> > > tube modules.
> > > 
> > > NOW, do you see why there are no tube Euro modules? 
> > > 
> > > It's POSSIBLE to use +-12v only. It requires the usage of
> > > tubes with 12v or other "odd" heater voltages, which are 
> > > easy to get but not as commonplace as 6-volt heater versions. 
> > > 
> > > (I'd like to use 6GH8s if at ALL possible. At one time, 
> > > the 6GH8 was the one tube in the world manufactured in
> > > the largest quantities---
> > > mainly because it was used in TV sets that ran them
> > > very hard, and made for a short lifetime.
> > > Lud Sibley of the Tube Collector's Association owns the 
> > > RCA corporate archive. He did the research in the files
> > > and found that in 1960-61, RCA was making FOUR MILLION
> > > 6GH8s PER MONTH. By comparison, they made "only" about 
> > > 100,000 12AX7s per month. So, leftover 6GH8s are 
> > > everywhere today.)
> > > 
> > > And the total power consumption will be the same anyway. 
> > > A typical two-tube module will use about 3-4 watts just 
> > > for tube heaters, regardless of where the power comes from.
> > > So it's your choice:
> > > 
> > > 1) get the cab modified to hold an extra +5v supply,
> > > or
> > > 2) use large +-12 power supplies to run the tube load.
> > > 
> > > And there's another headache:
> > > Want a Frac version of these modules? Well, Frac systems
> > > usually have +-15v. No problem for the solid-state support
> > > circuits. But the tube heaters will HAVE to have optional 
> > > dropping resistors to keep their voltages down. 
> > > 
> > > More complexity, more PC board space.
> > >
> >
>

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von thomasborax
> Gesendet: Mittwoch, 16. Juli 2008 02:54
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Re: working on Euro-format tube modules for next
> year
>
>
> a wall wart seems like a ok solution.  but what i'd like to do is run
> the 5v transformer off of the same "mains-in" that the +/-12v runs off
> of.  i think that's what most people with modulars would want to do.

The A-100 power supplies have additional connectors that can be used to
connect the mains of another power supply (i.e. each of the mains connectors
is available twice). We use this connectors e.g. if a second power supply
has to be installed into a frame. You have to pay attention that the fuse
value in the mains inlet has to be adapted accordingly (e.g. doubled if two
A-100PSU2 are used).

These connectors can be used to drive e.g. a +5V supply. The GND and +5V of
the +5V supply have to be connected to the GND and +5V terminals of the bus
board. But the width and thickness of the +5V track of the bus board is not
suitable for high currents as required for Erics tube modules but only for a
few hundert mA. As suggested by Eric the +5V line of the bus board has to be
"thickened" (e.g. by soldering an additional blank wire across the +5V
track).

And I have to add this remark: As these works affects parts, pc boards and
cables that conduct mains voltage (230/115V) carrying out of these works is
allowed only for experts or authorized personnel who are familiar with all
valid safety rules.  Laymen are not allowed to carry out these works !
Danger to Life.

Best wishes
Dieter Doepfer

--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
 But the width and thickness of the +5V track of the bus board is not
> suitable for high currents as required for Erics tube modules but
only for a
> few hundert mA. As suggested by Eric the +5V line of the bus board
has to be
> "thickened" (e.g. by soldering an additional blank wire across the +5V
> track).


a-ha.  that was the one detail that left me a little curious. the
solution is not as simple as i thought. in that way, it almost seems
that these modules will require their own power supply, i.e. possibly
wall wart solution, in order to make it easy on users.

i'm personally interested in trying "modular mods" for posterity,
though.  if it comes to doing the extra work or using a wall wart, i
will do the work.

i'm curious to see how this pans out.  i think there is a solution
that will make users and designers happy and hope that eric sees this
project through, not discouraged by logistics.  having tube modules in
my system is really exciting.

-t

> though.  if it comes to doing the extra work or using a wall wart, i
> will do the work.
> 

Hopefully "wallwart" will fade away as a talking point. I think the 
best solution is to offer a Metasonix subrack that is downwardly 
compatible with other euro modules. This rack would contain a power 
source and busboards that could also be sold separately for DIY'ers. 
Of course it would be best if the power source and busboards just 
happened to fit in as replacements in the standard Doepfer racks. I 
envision simply swapping out a busboard and power supply in my G6 
subrack, so Metasonix modules could be added to the row. Whether or 
not the busboards are Doepfer or AS compatible (or both) is secondary, 
as people are already capable of integrating AS modules into Doepfer 
racks and vice versa. This being the Doepfer group, I would vote for 
Doepfer compatible bus boards as the primary objective ;) 

Doug

The solution could be a 5V power supply module made like the Power  
Supply module in the portable cases. It could be sold with a beefed  
up buss board to replace the installed one (but then there would have  
to be a AS and Doepfer versions) or it could just connect directly to  
the modules with molex connectors (the classic PC power connectors  
would work). It would plug into the additional AC connectors that  
Dieter mentioned or in worse case scenario there would be a front  
mounted IEC connector like the Portable cases. You would have to  
mount it at the end of the row and the it would only want CV type  
modules next to it but it would be the most elegant solution with the  
least amount of user involvement (at least the direct connect - no  
buss version).

-James