Doepfer

hello to all - 
i recently traded for an a-110 vco (thanks, david, great trade !) to  add to 
my system with the specific intention of adding the linear fm mod to it.  this 
has been completed and works quite well -  *if you have any d.i.y.  interest, 
look at this mod*  - it is totally simple (and i simplified my  set-up a bit 
more by skipping the ac / dc coupling switch,i went with ac only) -  1 jack, 1 
pot and 1 cap.. since the pot value wasn`t specified, i used a 50k as  all 
the other pots in the module were 50k and it seems to work fine.
this one is a winner !  :^)
i`ve always liked the a-110, i consider it the "volks - vco" as it is  
adequate for most of my vco needs while remaining affordable and the lin fm mod  
gives it even more bang-per-buck !
i didn`t add the soft sync option as i don`t use sync that much but i may  go 
back and retrofit it - i did have a question about it though - it shows a  
jack and pot but what is the pot for - ? i didn`t think it would be needed  for 
a sync input - ? some sort of range control - ?
thanks !
best,
dave
 
 
 



************************************** See what's free at http://www.aol.com.


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

Due to the suggestions and discussion we designed a second version of the
voltage controlled panning filter/mixer A-135-2. Details on our website
www.doepfer.com > NEWS > A-135-2. Tell me what you think about it.

Best wishes
Dieter Doepfer

hello Dieter,
a135-2 version two is great!
i much prefer this to version one.
but what if someone wants cv inputs for resonance?
will you design another expansion module for a135-2
version 2? (for example an 8HP module with four Res cv
inputs plus 4 attenuators for these inputs)?
or the two expansion modules will remain as are? (but
that wouldn't make much sense only for four Res cv
inputs...)
best regards,
Bakis.


--- hardware@doepfer.de wrote:

> Due to the suggestions and discussion we designed a
> second version of the
> voltage controlled panning filter/mixer A-135-2.
> Details on our website
> www.doepfer.com > NEWS > A-135-2. Tell me what you
> think about it.
> 
> Best wishes
> Dieter Doepfer
> 
> 


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

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
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On 5/7/07 2:44 PM, "Bakis Sirros" <synth_freak_2000@yahoo.com> wrote:

> hello Dieter,
> a135-2 version two is great!
> i much prefer this to version one.
> but what if someone wants cv inputs for resonance?

I would think Bandpass filters or 12dB multi-mode filters would be more
useful in this application/configuration.
So, why 24dB lowpass? I guess it makes since for someone starting off
building a system, but with all the different filters, I don't think I need
4 basic 24dB lowpass filters.
 Just my opinion, but it seems like band pass and/or notch filters could be
more useful with panning effects.
best,
phil

> hello Dieter,
> a135-2 version two is great!
> i much prefer this to version one.
> but what if someone wants cv inputs for resonance?
> will you design another expansion module for a135-2
> version 2? (for example an 8HP module with four Res cv
> inputs plus 4 attenuators for these inputs)?
> or the two expansion modules will remain as are? (but
> that wouldn't make much sense only for four Res cv
> inputs...)
> best regards,
> Bakis.

I know that this is a disadvantage of this design. But adding the CV inputs
for the resonance would increase the width of the front panel by about 50 mm
(4 sockets). Maybe we can find another solution (e.g. omitting the level
controls or mute switches), but from my point of view the CVQ was the
function with the lowest priority compared to the other features.
But as this module is still in the discussion state things still may change.

Yesterday I visited the concert of Gusgus in Munich and we discussed the
A-135-2 (and a lot of other things) after the show. They have a lot of
modifications in their system adapted to the needs for live performances,
mainly a lot of additional on/off or mute switches (e.g. for all inputs of
the A-138 mixers and multiples). Maybe we will redesign some modules or add
some more live orientated modules if desired - and as already suggested by
Florian.

Best wishes
Dieter Doepfer

> Yesterday I visited the concert of Gusgus in Munich and we discussed the
> A-135-2 (and a lot of other things) after the show. They have a lot of
> modifications in their system adapted to the needs for live performances,
> mainly a lot of additional on/off or mute switches (e.g. for all inputs of
> the A-138 mixers and multiples). Maybe we will redesign some modules or add
> some more live orientated modules if desired - and as already suggested by
> Florian.

YEAH YEAH YEAH... I am into this idea for long time, switches are really practical for using 
A100 as an INSTRUMENT to play with... live or even in studio for recordings...

but also they need to be easily accessible... to be used well...

for me space between knobs does not mater so much... like this difference between 
version 1 and 2 of A135-2 does change much... I would prefer the switches to be more 
acessible than the knobs... unless one as got really huge fingers... mine are rather long...


SUPER

KEEP ON...


MERCI


Alexandre

I just put in the photos area two pictures of a concert I played recently in Paris using A100 
with colleague Arnaud Rivière on electronic drums... 

for anyone here in Paris, we will play at club Instants Chavirés on june 15th... same set 
up...


best,


Alexandre

Just added two pics (photos section) of modifications on A110 (mute switch for CV1 as we 
are discussing switches at the moment) + also A199 modified with reverb outside...

Best,


alexandre

> hello to all -
> i recently traded for an a-110 vco (thanks, david, great trade !)
> to add to
> my system with the specific intention of adding the linear fm mod
> to it. this
> has been completed and works quite well - *if you have any d.i.y.
> interest,
> look at this mod* - it is totally simple (and i simplified my
> set-up a bit
> more by skipping the ac / dc coupling switch,i went with ac only)
> - 1 jack, 1
> pot and 1 cap.. since the pot value wasn`t specified, i used a 50k as all
> the other pots in the module were 50k and it seems to work fine.
> this one is a winner ! :^)
> i`ve always liked the a-110, i consider it the "volks - vco" as it is
> adequate for most of my vco needs while remaining affordable and
> the lin fm mod
> gives it even more bang-per-buck !
> i didn`t add the soft sync option as i don`t use sync that much
> but i may go
> back and retrofit it - i did have a question about it though - it shows a
> jack and pot but what is the pot for - ? i didn`t think it would
> be needed for
> a sync input - ? some sort of range control - ?
> thanks !
> best,
> dave

Dave,

sorry for the late reply - but I had to understand the A-110 softsync
circuit before I answer. The attenuator at the optional softsync input does
make sense. As you probably know the A-110 has a sawtooth core. The
comparator that triggers the discharge (or reset) of the sawtooth has
normally a trigger threshold of 0V/GND. With the optional softsync the
trigger level of the comparator can be modulated with an external signal.
Different levels of the same soft sync signal lead to different results as
the trigger threshold of the reset comparator is modulated with different
amplitudes.

In contrast attenuation of the hard sync signal would not make much sense:
in this case the sync would simply stop below at a certain level.

Best wishes
Dieter Doepfer

I agree with this idea. Bandpass filters are more useful in an 
elaborated system thinking
on using it as a little vc filterbank for e.g. percussive effects with 
single outputs.
Two of this modules and you have the same number on single outputs as the
EMS Octave Filter Bank.
But you are more flexible with this module (Q-Factor, Frequencies, Mute, 
Panning...)
Or we will get the option to work with jumpers, similar to the A-127.
I don't know whether it is possible or too expensive.
But thousand people, two thousand ideas are in the field.
In general the new version is very useful!
All the best
Axel

P. Hendricks schrieb:

>
> On 5/7/07 2:44 PM, "Bakis Sirros" <synth_freak_2000@yahoo.com 
> <mailto:synth_freak_2000%40yahoo.com>> wrote:
>
> > hello Dieter,
> > a135-2 version two is great!
> > i much prefer this to version one.
> > but what if someone wants cv inputs for resonance?
>
> I would think Bandpass filters or 12dB multi-mode filters would be more
> useful in this application/configuration.
> So, why 24dB lowpass? I guess it makes since for someone starting off
> building a system, but with all the different filters, I don't think I 
> need
> 4 basic 24dB lowpass filters.
> Just my opinion, but it seems like band pass and/or notch filters could be
> more useful with panning effects.
> best,
> phil
>
>

Hej
I like you reverb solution
I put my out just by small hole I got in between modules

regarding swith, great module would be distributing swith
when you can swith between few imput to one out put, can be really think but 
very useful
also reverse of this when you can send one signal to 2-3 diferent outputs

and even something like you can have 
3 imputs
to 
one out put
===> here link posibilities so very quickly you can send 3 different ins to 3 different outs
one imput
to three outputs


is this clean?


best

robert



>
> Just added two pics (photos section) of modifications on A110 (mute switch for CV1 as 
we 

> are discussing switches at the moment) + also A199 modified with reverb outside...
> 
> Best,
> 
> 
> alexandre
>

I agree
this is much more better than ver.01
only size is killer, especialy for live show
otherwise you need two cases :)
[maybe still there is a chance to save some space
using thiner knobs (not the same but for example small mixing 
consoles have much thinner knobs that regular A100)

anyway it seem to get quick acces
and easy distribution of sound
good looking forward

thanks
r



>
> > Yesterday I visited the concert of Gusgus in Munich and we discussed the
> > A-135-2 (and a lot of other things) after the show. They have a lot of
> > modifications in their system adapted to the needs for live performances,
> > mainly a lot of additional on/off or mute switches (e.g. for all inputs of
> > the A-138 mixers and multiples). Maybe we will redesign some modules or add
> > some more live orientated modules if desired - and as already suggested by
> > Florian.
> 
> YEAH YEAH YEAH... I am into this idea for long time, switches are really practical for 
using 
> A100 as an INSTRUMENT to play with... live or even in studio for recordings...
> 
> but also they need to be easily accessible... to be used well...
> 
> for me space between knobs does not mater so much... like this difference between 
> version 1 and 2 of A135-2 does change much... I would prefer the switches to be more 
> acessible than the knobs... unless one as got really huge fingers... mine are rather 
long...

> 
> 
> SUPER
> 
> KEEP ON...
> 
> 
> MERCI
> 
> 
> Alexandre
>

Like the others, I like the second version. I also agree that a  
bandpass version would also be very nice. As for the possibility of  
VC of the resonance,  I could loose the mute switches and replace  
them with a Q CV input.

-JH

On May 7, 2007, at 1:44 AM, hardware@doepfer.de wrote:

> Due to the suggestions and discussion we designed a second version  
> of the
> voltage controlled panning filter/mixer A-135-2. Details on our  
> website
> www.doepfer.com > NEWS > A-135-2. Tell me what you think about it.
>
> Best wishes
> Dieter Doepfer
>
>
>
>
> Yahoo! Groups Links
>
>
>

Well... it seems there are two approachs with really different desires either you see A100 
as a studio/recording machine... or as an instrument to use either live or also in studio but 
as playing it, not only for generating sounds.

personnaly, I use it both ways... so I'm pretty cool with what anyone says....

I am not so much into that A135-2 anyway... but... I want to come up again with an idea 
about those interested in having this switches to have EASY FAST ACTION POSSIBILITIES 
when using A100 as an "instrument"

long time ago thats why I said I was into the manual gate module which somehow offers 
possibility for ACTION EVENTS...

BUT... now, also, I can imagine a module with just a few in/out and just a mute (on/off) 
switch... maybe 4, 6 or 8 of them on a single module. very simple module. actually, yeah, 
just nearly an A138 with switches...

I guess its would be easy to build actually. well I'm not such an engineer... but maybe I 
should try, at least I managed to add such a switch on an A110 and it works...

but really drilling holes and all that... I'm not such into it...

ANYWAY just to keep the discussion on...

best,


Alexandre

I agree with Alexandre totally
may be you can do some DYI object people as we can buit kind
of such "matrix"
on live A100 is very hard to work with, of course it is kind of chalenge
and it makes brain work faster.

paradoxaly A100 has so much different modules
but very few with good stereo mixing/distributing signals
check out how EMS synthi is working in that way......

also no "stereo" thinking in general idea of the synth
youhave doble everything or use tricks
I do second thing

anyway most of mixing knobs in any audio modules (as in reverb or freq shifter)
are very very useful

thanks
robert




>
> Well... it seems there are two approachs with really different desires either you see A100 
> as a studio/recording machine... or as an instrument to use either live or also in studio 
but 
> as playing it, not only for generating sounds.
> 
> personnaly, I use it both ways... so I'm pretty cool with what anyone says....
> 
> I am not so much into that A135-2 anyway... but... I want to come up again with an idea 
> about those interested in having this switches to have EASY FAST ACTION POSSIBILITIES 
> when using A100 as an "instrument"
> 
> long time ago thats why I said I was into the manual gate module which somehow offers 
> possibility for ACTION EVENTS...
> 
> BUT... now, also, I can imagine a module with just a few in/out and just a mute (on/off) 
> switch... maybe 4, 6 or 8 of them on a single module. very simple module. actually, 
yeah, 

> just nearly an A138 with switches...
> 
> I guess its would be easy to build actually. well I'm not such an engineer... but maybe I 
> should try, at least I managed to add such a switch on an A110 and it works...
> 
> but really drilling holes and all that... I'm not such into it...
> 
> ANYWAY just to keep the discussion on...
> 
> best,
> 
> 
> Alexandre
>

agree with what james said.
best regards,
Bakis.


--- James Husted <the_ersatz_planet@mac.com> wrote:

> Like the others, I like the second version. I also
> agree that a  
> bandpass version would also be very nice. As for the
> possibility of  
> VC of the resonance,  I could loose the mute
> switches and replace  
> them with a Q CV input.
> 
> -JH
> 
> 
> On May 7, 2007, at 1:44 AM, hardware@doepfer.de
> wrote:
> 
> > Due to the suggestions and discussion we designed
> a second version  
> > of the
> > voltage controlled panning filter/mixer A-135-2.
> Details on our  
> > website
> > www.doepfer.com > NEWS > A-135-2. Tell me what you
> think about it.
> >
> > Best wishes
> > Dieter Doepfer
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> 
> 


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

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com

Robert, I guess probably at first A100 was not thought maybe as an instrument to use as 
Live INstrument, maybe I'm wrong, maybe Dieter can correct me... so maybe thats why,, 
nowadays, it seems to lack some modules designed in that sense...


also I just wanted to correct something I wrote before

this MANUAL MULTI-SWITCH MODULE I'm thinking about is different from an A138... in 
the sense that its rather individual switch that I would like to have... no need to have the 
sum of them...

TO MAKE IT TOTAL CLEAR

1 signal in - 1 signal out - 1 switch on/off

maybe 4 or 6 or 8 in one modules...

ooooppsss

SORRY FOR CONFUSION...


best,


A

PS : Robert, I think we never talked or met really but both have seen each other gigs I think 
right?


best
ALexandre

I would also say that band pass filters would be much more interesting than low-pass filters.  
On the other hand, if this is a final output mixer, then there would certainly be times when 
one would want unfiltered output.  With the space between the columns of knobs on the new 
version, might there be room for a switch to switch between LP-BP-bypass/off?  

Or a real dream come true:  one 3-position switch for LP-BP-HP, and another 2-position 
switch for filter on-off???

That would be amazing....

Ernst

> As far as I know the history of the A-100 was escorted and even 
> consulted by the guys from Weltklang (http://www.weltklang-music.de/), 
> especially Andreas Merz. Weltklang always was a completely live 
> orientated project
GREAT I didnt know this at all... even though maybe in GENERAL synth, especiaaly big 
systems are rather studio instruments...


> But if you are in todays dance orientated electronic music, need another 
> access to a synthesizer - no matter whether modular or pre-cabled.
well not really making dance music here, which I dont mind when its good, I'm rather 
using A100 like... euh... in improvisation/noise context whatever its called... I generally 
start with quite complicated patch and dont change so many of them while playing  AND 
THATS WHERE IS MY INTEREST in things to switch on and off....

best


ALexandre

Hi Alexandre

> Robert, I guess probably at first A100 was not thought maybe as an instrument to use as 
> Live INstrument, maybe I'm wrong, maybe Dieter can correct me... so maybe thats why,, 
> nowadays, it seems to lack some modules designed in that sense...

As far as I know the history of the A-100 was escorted and even 
consulted by the guys from Weltklang (http://www.weltklang-music.de/), 
especially Andreas Merz. Weltklang always was a completely live 
orientated project, but theirs access to a modular synth is influenced 
by a style of music in the sense of Berlin school. This works fine with 
quite static patching.
But if you are in todays dance orientated electronic music, need another 
access to a synthesizer - no matter whether modular or pre-cabled.

Florian

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von ErnstKarel
> Gesendet: Mittwoch, 9. Mai 2007 14:41
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Re: version 2 of the panning filter/mixer
> A-135-2
>
>
> I would also say that band pass filters would be much more
> interesting than low-pass filters.
> On the other hand, if this is a final output mixer, then there
> would certainly be times when
> one would want unfiltered output. With the space between the
> columns of knobs on the new
> version, might there be room for a switch to switch between
> LP-BP-bypass/off?
>
> Or a real dream come true: one 3-position switch for LP-BP-HP,
> and another 2-position
> switch for filter on-off???
>
> That would be amazing....
>
> Ernst

We already considered to implement a sub-set of the filters (e.g. 4 or 8
filters) of the morphing filter A-107 but rejected this idea as it would
nearly double the price of the module. Another idea was to release only a
single version of the module (~ 8 or 10 or 12 HP according to the
features/functions, like several different filter types) with an internal
stereo bus that can be used in combinatin with a common stereo output
module. I did not mention that as I did not want to make things more
complicated. But now all these ideas (especially different filter types)
appear little by little in the group ...

Best wishes
Dieter Doepfer

I always develop a master gig patch when I'm playing.  It allows performing each of the songs I want to play with a minimum of knob turning, and the ability to mix in more noisy elements.  Lately this has meant reserving one of my mixer channels to be able to add in the Zeroscillator with crazy modulation.  I also tend to send the basic patch trough several filters and these are all available through my quad vca and can be selected as needed.

I'm not really making dance music, but it is song-oriented.

Bryan

>>> "bellenger_a" <bellenger_a@yahoo.fr> 05/09/07 11:21 AM >>>
> As far as I know the history of the A-100 was escorted and even 
> consulted by the guys from Weltklang (http://www.weltklang-music.de/), 
> especially Andreas Merz. Weltklang always was a completely live 
> orientated project
GREAT I didnt know this at all... even though maybe in GENERAL synth, especiaaly big 
systems are rather studio instruments...


> But if you are in todays dance orientated electronic music, need another 
> access to a synthesizer - no matter whether modular or pre-cabled.
well not really making dance music here, which I dont mind when its good, I'm rather 
using A100 like... euh... in improvisation/noise context whatever its called... I generally 
start with quite complicated patch and dont change so many of them while playing  AND 
THATS WHERE IS MY INTEREST in things to switch on and off....

best


ALexandre

Hi,

Does anyone have the details of how to perform this mod ?  I don't
seem to be able to find any info anywhere.

Cheers

Sunib

--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
> > hello to all -
> > i recently traded for an a-110 vco (thanks, david, great trade !)
> > to add to
> > my system with the specific intention of adding the linear fm mod
> > to it. this
> > has been completed and works quite well - *if you have any d.i.y.
> > interest,
> > look at this mod* - it is totally simple (and i simplified my
> > set-up a bit
> > more by skipping the ac / dc coupling switch,i went with ac only)
> > - 1 jack, 1
> > pot and 1 cap.. since the pot value wasn`t specified, i used a 50k
as all
> > the other pots in the module were 50k and it seems to work fine.
> > this one is a winner ! :^)
> > i`ve always liked the a-110, i consider it the "volks - vco" as it is
> > adequate for most of my vco needs while remaining affordable and
> > the lin fm mod
> > gives it even more bang-per-buck !
> > i didn`t add the soft sync option as i don`t use sync that much
> > but i may go
> > back and retrofit it - i did have a question about it though - it
shows a
> > jack and pot but what is the pot for - ? i didn`t think it would
> > be needed for
> > a sync input - ? some sort of range control - ?
> > thanks !
> > best,
> > dave
> 
> Dave,
> 
> sorry for the late reply - but I had to understand the A-110 softsync
> circuit before I answer. The attenuator at the optional softsync
input does
> make sense. As you probably know the A-110 has a sawtooth core. The
> comparator that triggers the discharge (or reset) of the sawtooth has
> normally a trigger threshold of 0V/GND. With the optional softsync the
> trigger level of the comparator can be modulated with an external
signal.
> Different levels of the same soft sync signal lead to different
results as
> the trigger threshold of the reset comparator is modulated with
different
> amplitudes.
> 
> In contrast attenuation of the hard sync signal would not make much
sense:

> in this case the sync would simply stop below at a certain level.
> 
> Best wishes
> Dieter Doepfer
>

maybe it's been said, but...
i would personally love to see this module with the addition of:
a mute switch for each channel
a master stereo volume knob
a simple stereo horizontal led (an led for each channel would be great
but i don't want to push it).

sure, i have a mixing board. in fact i have a few but there's no
reason my modular should be dependent on another piece of gear
(especially when you can make a modular do practically anything) for
such a simple operation. besides, it's nice to have it all in one
convenient location.

i have been tempted in the past to buy a cheap tapco (or worse) mixer,
gut it and modularize it. you can buy a nice, cheap 6 channel mixer
w/eq's, mutes, headphone out,(some even have xlr outs)etc. for $100 or
less. granted, this may not be the purpose of the a-135-2, but then,
what is it?  why stop short?

I meant - vertical - led.

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

>
> maybe it's been said, but...
> i would personally love to see this module with the addition of:
> a mute switch for each channel
> a master stereo volume knob
> a simple stereo horizontal led (an led for each channel would be great
> but i don't want to push it).
> 
> sure, i have a mixing board. in fact i have a few but there's no
> reason my modular should be dependent on another piece of gear
> (especially when you can make a modular do practically anything) for
> such a simple operation. besides, it's nice to have it all in one
> convenient location.
> 
> i have been tempted in the past to buy a cheap tapco (or worse) mixer,
> gut it and modularize it. you can buy a nice, cheap 6 channel mixer
> w/eq's, mutes, headphone out,(some even have xlr outs)etc. for $100 or
> less. granted, this may not be the purpose of the a-135-2, but then,
> what is it?  why stop short?
>

> i have been tempted in the past to buy a cheap tapco (or worse) mixer,
> gut it and modularize it. you can buy a nice, cheap 6 channel mixer
> w/eq's, mutes, headphone out,(some even have xlr outs)etc. for $100 or
> less. granted, this may not be the purpose of the a-135-2, but then,
> what is it?  why stop short?

The idea of the A-135-2 was never to replace a normal audio mixer (as
described by you above) but to have an alternative mixing tool with features
that are not available in such a standard mixer. For example VCFs are used
(not EQs) and you have voltage control over each parameter (frequency,
resonance, loudness, panning). If you ever tried the voltage control
features of the A-135-2 - OK, it's not possible so far - (e.g. independent
panning with 4 LFOs like A-143-3, or control of the parameters F/Q/A/P with
a sequencer or Theremin or ribbon or random voltage or ...) in combination
with the manual control features you will understand the difference between
the A-135-2 and a standard mixer.

Best wishes
Dieter Doepfer