Doepfer

Hi- I'm designing my first Doepfer now and have a few general questions about it:

Is the A-119 the only way you can incorporate external audio into the A100 or can you 
patch another synth, for instance into any of the audio inputs? 

Can sound from the Audio Outs of the modules (VCOs, VCAs, ect) be patched directly into 
my home monitors or do you have to use a Mixer module for that?

Finally, I'm not 100% clear on the difference between the Linear and Exponential Mixers 
and VCAs. 

The manuals for the modules lead me to believe one thing but I want to double check 
before I decide exactly what I want/need.

Thanks!

Hi Chris

> Is the A-119 the only way you can incorporate external audio into the A100 or can you 
> patch another synth, for instance into any of the audio inputs? 
The signal of most other synthesizers fit well into the audio inputs af 
any audio module. The real advantage of the A-119 is given with non line 
signals (e.g. guitares or microphones). Also the functions of envelope 
following and gate creation from audio signals can be provideed only by 
the A-119.

> Can sound from the Audio Outs of the modules (VCOs, VCAs, ect) be patched directly into 
> my home monitors or do you have to use a Mixer module for that?
You always should use some gear, that is able to decrease the sigkla 
volume (e.g. some small mixer like an Behringer or Phonic. The direct 
output signal level of the A-100 is to high to connect it direct to an 
active monitor.

> Finally, I'm not 100% clear on the difference between the Linear and Exponential Mixers 
> and VCAs. 
Mixers: Linear for control voltages, Exponential for audio

VCA:
- Linear for envelope control (ADSR - the control signal is already 
exponential),
- Exponential for LFO and dynamics control (e.g. velocity from MIDI or 
envelope follower).
Where mixing audio signal on a linear mixer is not perfect but possible, 
mixing control voltages on a logarithmic mixer is very unsatisfying.

If you want to take only one VCA or one mixer, you should buy the linear 
version of each.


Florian

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von Chris Chappel
> Gesendet: Freitag, 6. Oktober 2006 23:36
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] General questions from a new user...
>
>
> Hi- I'm designing my first Doepfer now and have a few general
> questions about it:
>
> Is the A-119 the only way you can incorporate external audio into
> the A100 or can you
> patch another synth, for instance into any of the audio inputs?

If you use a audio signal that has sufficient level (1Vss or more) no A-119
is necessary unless you need the envelope and gate derived from the input
signal.

> Can sound from the Audio Outs of the modules (VCOs, VCAs, ect) be patched
directly into
> my home monitors or do you have to use a Mixer module for that?

depends upon the specs and features of your home monitors (required input
level, level controls ...).

> Finally, I'm not 100% clear on the difference between the Linear
> and Exponential Mixers and VCAs.

Normally exponential mixers and VCAs are used for audio and linear for CV.
But that's not imperative and you may even use it the other way round (e.g.
a linear VCA for amplitude modulation with an LFO). An exponential VCA will
generate a morwe "crispy" sound than a linear one with the same envelope
signal.

Best wishes
Dieter Doepfer

Thanks for all the info. To be more specific, I'm mainly trying to decide whether I need the 
A-119 or whether I should get another Mixer or VCA( I've only got one of each in my 
planned system so far). I'm planning on incorporating my Moog Voyager into my new 
A100. Also, I have a pre-amp for boosting the signal level of mics, etc so it's sounding like 
the A-119 might not be essential in my first system. 

Thanks again-
Chris

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

>
> > -----Ursprüngliche Nachricht-----
> > Von: Doepfer_a100@yahoogroups.com
> > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von Chris Chappel
> > Gesendet: Freitag, 6. Oktober 2006 23:36
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: [Doepfer_a100] General questions from a new user...
> >
> >
> > Hi- I'm designing my first Doepfer now and have a few general
> > questions about it:
> >
> > Is the A-119 the only way you can incorporate external audio into
> > the A100 or can you
> > patch another synth, for instance into any of the audio inputs?
> 
> If you use a audio signal that has sufficient level (1Vss or more) no A-119
> is necessary unless you need the envelope and gate derived from the input
> signal.
> 
> > Can sound from the Audio Outs of the modules (VCOs, VCAs, ect) be patched
> directly into
> > my home monitors or do you have to use a Mixer module for that?
> 
> depends upon the specs and features of your home monitors (required input
> level, level controls ...).
> 
> > Finally, I'm not 100% clear on the difference between the Linear
> > and Exponential Mixers and VCAs.
> 
> Normally exponential mixers and VCAs are used for audio and linear for CV.
> But that's not imperative and you may even use it the other way round (e.g.
> a linear VCA for amplitude modulation with an LFO). An exponential VCA will
> generate a morwe "crispy" sound than a linear one with the same envelope
> signal.
> 
> Best wishes
> Dieter Doepfer
>