Doepfer

Hi, 

i can feed  any external signal  in the DE external input ?
For example  i can feed the audio that come from an external keyboard or from one of my pedals ? Or i have to preamp  it ?


thanks in advance 
diego

Ingo has a Dark Energy.

Ingo any help on this?



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. vu-us. com

--- On Fri, 10/15/10, Diego <amsonx@yahoo.com> wrote:

From: Diego <amsonx@yahoo.com>
Subject: [Doepfer_a100] Dark energy external out question
To: Doepfer_a100@yahoogroups.com
Date: Friday, October 15, 2010, 9:40 AM







 



  


    
      
      
      Hi, 



i can feed  any external signal  in the DE external input ?

For example  i can feed the audio that come from an external keyboard or from one of my pedals ? Or i have to preamp  it ?



thanks in advance 

diego





    
     

    
    


 



  






      

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

Thanks for this clarification Dieter

Diego

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

>
> > Hi,
> >
> > i can feed  any external signal  in the DE external input ?
> > For example  i can feed the audio that come from an external
> > keyboard or from one of my pedals ? Or i have to preamp  it ?
> >
> >
> > thanks in advance
> > diego
> 
> You can feed any audio signal with line level to the DE audio input (i.e.
> typ 1V level). But it's not possible to use a microphone or electric guitar.
> These need to be amplified. If you want to adjust the level of the external
> signal (in relation to the internal VCO) and external attenuator (e.g.
> A-183-1) or amplifier/attenuator (e.g. A-183-3) is recommended.
> 
> Best wishes
> Dieter Doepfer
>

hi Diego,

Yes, you can do that.



Your pedals will already have pre-amps in them
(unless they have true bypass).
What's an "external keyboard?", if it has line level
audio outputs then that would work also.

You probably need some kind of volume control on the
input signal though.
The DE input doesn't have a lot of headroom, it's easy to make
it distort, especially if you're thinking of running the input sound
at a level that matches that of the oscillator.

Best to just plug in and try.

andy butler
DE user







Diego wrote:

>  
> 
> Hi,
> 
> i can feed any external signal in the DE external input ?
> For example i can feed the audio that come from an external keyboard or 
> from one of my pedals ? Or i have to preamp it ?
> 
> thanks in advance
> diego
> 
>

> Hi,
>
> i can feed  any external signal  in the DE external input ?
> For example  i can feed the audio that come from an external
> keyboard or from one of my pedals ? Or i have to preamp  it ?
>
>
> thanks in advance
> diego

You can feed any audio signal with line level to the DE audio input (i.e.
typ 1V level). But it's not possible to use a microphone or electric guitar.
These need to be amplified. If you want to adjust the level of the external
signal (in relation to the internal VCO) and external attenuator (e.g.
A-183-1) or amplifier/attenuator (e.g. A-183-3) is recommended.

Best wishes
Dieter Doepfer

yahoo@doepfer.de wrote:

> You can feed any audio signal with line level to the DE audio input (i.e.
> typ 1V level). But it's not possible to use a microphone or electric guitar.
> These need to be amplified. If you want to adjust the level of the external
> signal (in relation to the internal VCO) and external attenuator (e.g.
> A-183-1) or amplifier/attenuator (e.g. A-183-3) is recommended.

Is there anything you'd recommend as a way to *reduce* the level
of the oscillator, in that situation or otherwise?

andy butler

> 
> Best wishes
> Dieter Doepfer

> Is there anything you'd recommend as a way to *reduce* the level
> of the oscillator, in that situation or otherwise?
>
> andy butler

You may simply turn it off. If you want to adjust the relation please refer
to the additional technical documents on our website:

www.doepfer.com > PRODUCTS > DARK ENERGY >
Dark_Energy_technical_information.pdf

The pin of JP6 can be used also to apply a voltage in the
range -5V...GND...+5V to adjust the relation between internal VCO and
external signal (GND = same level, -5V VCO only, +5V external signal only).
If a jumper is put on JP6 -5V are applied (i.e. VCO only).

Best wishes
Dieter Doepfer

yahoo@doepfer.de wrote:
>  
> 
>  > Is there anything you'd recommend as a way to *reduce* the level
>  > of the oscillator, in that situation or otherwise?
>  >
>  > andy butler
> 
> You may simply turn it off.

figured that :-)

Also I found it's more or less possible to adjust the value 
of the the pulse width near to the "off" position.


> If you want to adjust the relation please refer
> to the additional technical documents on our website:
> 
> www.doepfer.com > PRODUCTS > DARK ENERGY >
> Dark_Energy_technical_information.pdf
> 
> The pin of JP6 can be used also to apply a voltage in the
> range -5V...GND...+5V to adjust the relation between internal VCO and
> external signal (GND = same level, -5V VCO only, +5V external signal only).
> If a jumper is put on JP6 -5V are applied (i.e. VCO only).

so what happens for a voltage of, for instance

-2.5V 
+2.5V

?

> 
> Best wishes
> Dieter Doepfer

many thanks
andy butler



> 
>

> > The pin of JP6 can be used also to apply a voltage in the
> > range -5V...GND...+5V to adjust the relation between internal VCO and
> > external signal (GND = same level, -5V VCO only, +5V external
> signal only).
> > If a jumper is put on JP6 -5V are applied (i.e. VCO only).
>
> so what happens for a voltage of, for instance
>
> -2.5V
> +2.5V

A CV change from -5V...+5V causes a change in the relation between the
internal VCO and the external signal (voltage controller input panning).

Best wishes
Dieter Doepfer

yahoo@doepfer.de wrote:
>>> The pin of JP6 can be used also to apply a voltage in the
>>> range -5V...GND...+5V to adjust the relation between internal VCO and
>>> external signal (GND = same level, -5V VCO only, +5V external
>> signal only).
>>> If a jumper is put on JP6 -5V are applied (i.e. VCO only).
>> so what happens for a voltage of, for instance
>>
>> -2.5V
>> +2.5V
> 
> A CV change from -5V...+5V causes a change in the relation between the
> internal VCO and the external signal (voltage controller input panning).

Sure, that much is evident from the original post.

The question on my mind is whether it is a switch, or a continuous
controller.

Hence the otherwise bizarre seeming use of the 2.5V & -2.5V voltages
as examples as to what wasn't clear ;-)

andy

> 
> Best wishes
> Dieter Doepfer
> 
> 
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
> 
>

> The question on my mind is whether it is a switch, or a continuous
> controller.

It's not a switch but a continuous controller (a bit like the A-134 when
used as crossfader or input panner).

Best wishes
Dieter Doepfer

yahoo@doepfer.de wrote:
>> The question on my mind is whether it is a switch, or a continuous
>> controller.
> 
> It's not a switch but a continuous controller (a bit like the A-134 when
> used as crossfader or input panner).
> 
> Best wishes
> Dieter Doepfer
> 

hi Dieter,
wow, that's amazing.
2 whole VCAs.
Very cool.

Seems like it's designed to be friendly to a hacker.

Is the an available component level schematic
for the Dark Energy?
that would at least save you and this list from my pedantic questions ;-)
(really, though, I think I'll have enough fun just adding
 a few extra sockets to the DE for now)


best wishes

andy butler

> Is the an available component level schematic for the Dark Energy?

We have available only the document I mentioned earlier:

www.doepfer.com > PRODUCTS > DARK ENERGY >
Dark_Energy_technical_information.pdf

This document describes all possible modifications. Sorry - we have no
further documents available that are published. We do not publish the DARK
ENERGY schematics.

Best wishes
Dieter Doepfer

hi Dieter, thanks again for that

I've now obtained the hardware sockets to bring those Dark Energy
jumpers out of the box.

Any chance you could help to fill in some gaps?

Problem I now have is that it's not always clear which pin to attach to.
The docs often only tell which pairs of pins have to be connected, not
which is which.

I'm looking at

JP6.. apply CV to mix between osc and ext.   ..which pin to use?

JP7.. 2 pins are LFO1 o/p and Inverter Input ..which is which? 

JP8.. 2 pins are Inverter o/p and to the LFO1bar socket on the top panel, ...which is which?


Any hints gratefully accepted.

For interest, my plan is to add 5 sockets:

Outputs
1. ADSR
2. LFO1
3. LFO2

Inputs 
1. Inverter (normalled to LFO1)
2. VCO/ext Mix

The existing LFO1bar  Output on the top panel will function
as before unless the Inverter input socket is used.


best regards

andy butler



yahoo@doepfer.de wrote:

>> The question on my mind is whether it is a switch, or a continuous
>> controller.
> 
> It's not a switch but a continuous controller (a bit like the A-134 when
> used as crossfader or input panner).
> 
> Best wishes
> Dieter Doepfer
> 
> 
> 
> 
> ------------------------------------
>

We have updated the technical information on our website with the details
about the pins.

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von andy butler
> Gesendet: Mittwoch, 27. Oktober 2010 17:10
> An: Doepfer_a100@yahoogroups.com
> Betreff: Re: : [Doepfer_a100] Dark energy external out question..Jumper
> pins and extra CV in/out
>
>
> hi Dieter, thanks again for that
>
> I've now obtained the hardware sockets to bring those Dark Energy
> jumpers out of the box.
>
> Any chance you could help to fill in some gaps?
>
> Problem I now have is that it's not always clear which pin to attach to.
> The docs often only tell which pairs of pins have to be connected, not
> which is which.
>
> I'm looking at
>
> JP6.. apply CV to mix between osc and ext.   ..which pin to use?
>
> JP7.. 2 pins are LFO1 o/p and Inverter Input ..which is which?
>
> JP8.. 2 pins are Inverter o/p and to the LFO1bar socket on the
> top panel, ...which is which?
>
>
> Any hints gratefully accepted.
>
> For interest, my plan is to add 5 sockets:
>
> Outputs
> 1. ADSR
> 2. LFO1
> 3. LFO2
>
> Inputs
> 1. Inverter (normalled to LFO1)
> 2. VCO/ext Mix
>
> The existing LFO1bar  Output on the top panel will function
> as before unless the Inverter input socket is used.
>
>
> best regards
>
> andy butler
>
>
>
> yahoo@doepfer.de wrote:
> >> The question on my mind is whether it is a switch, or a continuous
> >> controller.
> >
> > It's not a switch but a continuous controller (a bit like the A-134 when
> > used as crossfader or input panner).
> >
> > Best wishes
> > Dieter Doepfer
> >
> >
> >
> >
> > ------------------------------------
> >
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Many thanks,
that's brilliant!!!

andy


yahoo@doepfer.de wrote:

> We have updated the technical information on our website with the details
> about the pins.
> 
> Best wishes
> Dieter Doepfer
> 
> 
>> -----Ursprüngliche Nachricht-----
>> Von: Doepfer_a100@yahoogroups.com
>> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von andy butler
>> Gesendet: Mittwoch, 27. Oktober 2010 17:10
>> An: Doepfer_a100@yahoogroups.com
>> Betreff: Re: : [Doepfer_a100] Dark energy external out question..Jumper
>> pins and extra CV in/out
>>
>>
>> hi Dieter, thanks again for that
>>
>> I've now obtained the hardware sockets to bring those Dark Energy
>> jumpers out of the box.
>>
>> Any chance you could help to fill in some gaps?
>>
>> Problem I now have is that it's not always clear which pin to attach to.
>> The docs often only tell which pairs of pins have to be connected, not
>> which is which.
>>
>> I'm looking at
>>
>> JP6.. apply CV to mix between osc and ext.   ..which pin to use?
>>
>> JP7.. 2 pins are LFO1 o/p and Inverter Input ..which is which?
>>
>> JP8.. 2 pins are Inverter o/p and to the LFO1bar socket on the
>> top panel, ...which is which?
>>
>>
>> Any hints gratefully accepted.
>>
>> For interest, my plan is to add 5 sockets:
>>
>> Outputs
>> 1. ADSR
>> 2. LFO1
>> 3. LFO2
>>
>> Inputs
>> 1. Inverter (normalled to LFO1)
>> 2. VCO/ext Mix
>>
>> The existing LFO1bar  Output on the top panel will function
>> as before unless the Inverter input socket is used.
>>
>>
>> best regards
>>
>> andy butler

ok, another question, hope that's ok.

I guess the jumper 13 is hidden under the midi board,
(I have the v2)
...but looking for it I discovered

JP14

and

JP15

...and of course I'd love to know if there's a use for them.
(uh, and any others I didn't see yet)

Having the triangle-wave available seems like fun.


many thanks
andy




yahoo@doepfer.de wrote:

> We have updated the technical information on our website with the details
> about the pins.
> 
> Best wishes
> Dieter Doepfer
>

You find my answers written inline.

Best wishes
Dieter Doepfer

> I guess the jumper 13 is hidden under the midi board, (I have the v2)
> ...but looking for it I discovered

yes, it's right from the CEM3394

> JP14 and JP15

These are reset inputs for the LFOs. As it's a very special function planned
for the DARK MATTER expansion box they are not mentioned in the technical
document. A short circuit resets the triangle of the corresponding LFO (JP14
LFO2, JP15 LFO1). E.g. a momentary switch or an electronical switch can be
connected there. Do not apply a voltage. This may damage the circuits !

> ...and of course I'd love to know if there's a use for them.
> (uh, and any others I didn't see yet)
>
> Having the triangle-wave available seems like fun.
>
>
> many thanks
> andy