Doepfer

i'm feeding the wasp filter with a silent sound source, is there a way to make the volume higher than the maximum of the level knob? 
i have an external input module with a gain knob, but not in this tiny case i use live.
can i get the gain higher just by modifying the wasp filter module a little?

Isn't it an idea to not use the 'silent sound source'.
And start using a sound source that is non-silent?

All joking aside: I don't understand your question.



On Wed, May 27, 2009 at 5:01 PM, floris vanhoof
<florisvanhoof@ecomail.org> wrote:

>
>
> i'm feeding the wasp filter with a silent sound source, is there a way to
> make the volume higher than the maximum of the level knob?
> i have an external input module with a gain knob, but not in this tiny case
> i use live.
> can i get the gain higher just by modifying the wasp filter module a little?
>
>

the sounds that go in are less loud than normal doepfer vco's or noise sources, would it be possible to have those sounds as loud as the vco's etc by modding the filter module? 

--- In Doepfer_a100@yahoogroups.com, achtung_999 <heinrich.himmelwasser@...> wrote:

>
> Isn't it an idea to not use the 'silent sound source'.
> And start using a sound source that is non-silent?
> 
> All joking aside: I don't understand your question.
> 
> 
> 
> On Wed, May 27, 2009 at 5:01 PM, floris vanhoof
> <florisvanhoof@...> wrote:
> >
> >
> > i'm feeding the wasp filter with a silent sound source, is there a way to
> > make the volume higher than the maximum of the level knob?
> > i have an external input module with a gain knob, but not in this tiny case
> > i use live.
> > can i get the gain higher just by modifying the wasp filter module a little?
> >
> >
>

Ah, now I understand.

I think Dieter can answer that question better than I can. But I guess
it is possible.




On Thu, May 28, 2009 at 12:24 AM, floris vanhoof
<florisvanhoof@ecomail.org> wrote:

>
>
> the sounds that go in are less loud than normal doepfer vco's or noise
> sources, would it be possible to have those sounds as loud as the vco's etc
> by modding the filter module?
>
> --- In Doepfer_a100@yahoogroups.com, achtung_999 <heinrich.himmelwasser@...>
> wrote:
>>
>> Isn't it an idea to not use the 'silent sound source'.
>> And start using a sound source that is non-silent?
>>
>> All joking aside: I don't understand your question.
>>
>>
>>
>> On Wed, May 27, 2009 at 5:01 PM, floris vanhoof
>> <florisvanhoof@...> wrote:
>> >
>> >
>> > i'm feeding the wasp filter with a silent sound source, is there a way
>> > to
>> > make the volume higher than the maximum of the level knob?
>> > i have an external input module with a gain knob, but not in this tiny
>> > case
>> > i use live.
>> > can i get the gain higher just by modifying the wasp filter module a
>> > little?
>> >
>> >
>>
>
>

Would it not be better to amplify the source?
 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * *
David Salter
Senior Consultant
SSG UKI

Thomson Reuters

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

david.salter@thomsonreuters.com
thomsonreuters.com <http://thomsonreuters.com/> 
 
P Please consider the environment before printing this e-mail 

 

________________________________

From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com]
On Behalf Of floris vanhoof
Sent: 27 May 2009 23:25
To: Doepfer_a100@yahoogroups.com
Subject: [Doepfer_a100] Re: a124 wasp filter input level





the sounds that go in are less loud than normal doepfer vco's or noise
sources, would it be possible to have those sounds as loud as the vco's
etc by modding the filter module? 

--- In Doepfer_a100@yahoogroups.com
<mailto:Doepfer_a100%40yahoogroups.com> , achtung_999
<heinrich.himmelwasser@...> wrote:
>
> Isn't it an idea to not use the 'silent sound source'.
> And start using a sound source that is non-silent?
> 
> All joking aside: I don't understand your question.
> 
> 
> 
> On Wed, May 27, 2009 at 5:01 PM, floris vanhoof
> <florisvanhoof@...> wrote:
> >
> >
> > i'm feeding the wasp filter with a silent sound source, is there a
way to
> > make the volume higher than the maximum of the level knob?
> > i have an external input module with a gain knob, but not in this
tiny case
> > i use live.
> > can i get the gain higher just by modifying the wasp filter module a
little?
> >
> >
>






This email was sent to you by Thomson Reuters, the global news and information company.
Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Thomson Reuters.



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

That is exactly what you do if you increase the gain of the module. It's
possible on the A-120 ladder filter by soldering in an extra resistor - very
simple mod - but I don't know if the same is true for the Wasp filter.

/Silas

On Thu, May 28, 2009 at 9:21 AM, <david.salter@thomsonreuters.com> wrote:

>
>
> Would it not be better to amplify the source?
>
> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> * * *
> David Salter
> Senior Consultant
> SSG UKI
>
> Thomson Reuters
>
> O +44 (0)20 7542 2402X 52402
> M 07990562402
>
> david.salter@thomsonreuters.com <david.salter%40thomsonreuters.com>
> thomsonreuters.com <http://thomsonreuters.com/>
>
> P Please consider the environment before printing this e-mail
>
> ________________________________
>
> From: Doepfer_a100@yahoogroups.com <Doepfer_a100%40yahoogroups.com>[mailto:
> Doepfer_a100@yahoogroups.com <Doepfer_a100%40yahoogroups.com>]
> On Behalf Of floris vanhoof
> Sent: 27 May 2009 23:25
> To: Doepfer_a100@yahoogroups.com <Doepfer_a100%40yahoogroups.com>
> Subject: [Doepfer_a100] Re: a124 wasp filter input level
>
>
> the sounds that go in are less loud than normal doepfer vco's or noise
> sources, would it be possible to have those sounds as loud as the vco's
> etc by modding the filter module?
>
> --- In Doepfer_a100@yahoogroups.com <Doepfer_a100%40yahoogroups.com>
> <mailto:Doepfer_a100%40yahoogroups.com <Doepfer_a100%2540yahoogroups.com>>
> , achtung_999
> <heinrich.himmelwasser@...> wrote:
> >
> > Isn't it an idea to not use the 'silent sound source'.
> > And start using a sound source that is non-silent?
> >
> > All joking aside: I don't understand your question.
> >
> >
> >
> > On Wed, May 27, 2009 at 5:01 PM, floris vanhoof
> > <florisvanhoof@...> wrote:
> > >
> > >
> > > i'm feeding the wasp filter with a silent sound source, is there a
> way to
> > > make the volume higher than the maximum of the level knob?
> > > i have an external input module with a gain knob, but not in this
> tiny case
> > > i use live.
> > > can i get the gain higher just by modifying the wasp filter module a
> little?
> > >
> > >
> >
>
> This email was sent to you by Thomson Reuters, the global news and
> information company.
> Any views expressed in this message are those of the individual sender,
> except where the sender specifically states them to be the views of Thomson
> Reuters.
>
> [Non-text portions of this message have been removed]
>
>  
>


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

Hi Floris,

> the sounds that go in are less loud than normal doepfer vco's or noise sources, would it be possible to have those sounds as loud as the vco's etc by modding the filter module? 

There is a 27k resistor immediately after the audio in 'level' pot (between the pot and capacitor C1, but easy to find by following the trace from the pot wiper). If you lower this that should increase the gain, but (and I'm guessing here) I don't suppose you'll get much more than 2x or 3x improvement out of it before it goes 'haywire' (I could be wrong!). I suggest trying an 18k first, see what effect that has, and if that's OK, perhaps try a 10k - lower than that and it's anybody's guess! (Because the filter uses digital inverters as amplifiers, these are 'biased' by a variety of resistors, and lowering this one may have an effect on this biasing which stops the whole thing working properly, but without trying it, I can't be sure!)

Tim

thanks! i'll try it this week.

+i can hear my a-146 lfo thinking and beeping through my filter, not super loud, but annoying anyway. anyone else has a problem like this? how can one solve it? is it the diy power supply? 


--- In Doepfer_a100@yahoogroups.com, "Tim Stinchcombe" <timothy@...> wrote:

>
> Hi Floris,
> 
> > the sounds that go in are less loud than normal doepfer vco's or noise sources, would it be possible to have those sounds as loud as the vco's etc by modding the filter module? 
> 
> There is a 27k resistor immediately after the audio in 'level' pot (between the pot and capacitor C1, but easy to find by following the trace from the pot wiper). If you lower this that should increase the gain, but (and I'm guessing here) I don't suppose you'll get much more than 2x or 3x improvement out of it before it goes 'haywire' (I could be wrong!). I suggest trying an 18k first, see what effect that has, and if that's OK, perhaps try a 10k - lower than that and it's anybody's guess! (Because the filter uses digital inverters as amplifiers, these are 'biased' by a variety of resistors, and lowering this one may have an effect on this biasing which stops the whole thing working properly, but without trying it, I can't be sure!)
> 
> Tim
>

> i'm feeding the wasp filter with a silent sound source, is there
> a way to make the volume higher than the maximum of the level knob?
> i have an external input module with a gain knob, but not in this
> tiny case i use live.
> can i get the gain higher just by modifying the wasp filter
> module a little?

Please look at the A-100 DIY page, section 4.1.1. Changing the sensitivity
of manual controls, control voltage inputs and audio inputs

For A-124 it's R1 (27k) located just behind the potentiometer for audio
level control. If you reduce the value (factory 27k) of this resistor the
max. loudness increases. Another solution will be the usage of the planned
A-183-3 amplifier module.

Best wishes
Dieter Doepfer

> Hi Floris,
> 
> > the sounds that go in are less loud than normal doepfer vco's 
> or noise sources, would it be possible to have those sounds as 
> loud as the vco's etc by modding the filter module? 
> 
> There is a 27k resistor immediately after the audio in 'level' 
> pot (between the pot and capacitor C1, but easy to find by 
> following the trace from the pot wiper). If you lower this that 
> should increase the gain, but (and I'm guessing here) I don't 
> suppose you'll get much more than 2x or 3x improvement out of it 
> before it goes 'haywire' (I could be wrong!). I suggest trying an 
> 18k first, see what effect that has, and if that's OK, perhaps 
> try a 10k - lower than that and it's anybody's guess! (Because 
> the filter uses digital inverters as amplifiers, these are 
> 'biased' by a variety of resistors, and lowering this one may 
> have an effect on this biasing which stops the whole thing 
> working properly, but without trying it, I can't be sure!)
> 
> Tim

Couldn't explain it better :-)

Best wishes
Dieter Doepfer