Doepfer

Interesting this A-138e module. However can you control those knobs with CV ?


--- In Doepfer_a100@yahoogroups.com, zaum <zaum@...> wrote:
>
> > Sorry to be such a latecomer to this, but I've just found out about  
> > the A-111-2 and it looks great, but I really hope it will have LFO  
> > capacity. I've not understood why this isn't more common as it's  
> > great where space is a premium & it's a really useful feature on my  
> > EML-101 (other brilliant EML features were the continually variable  
> > VCO waveform, VCF (LP-BP-HP), and amplitude/ring modulation, which  
> > no one else seems to offer).
> 
> I for one found that an interesting module.
> 
> For what it's worth, though I'm not the greatest electronics expert,  
> my understanding is the EML does "cheat" on those variable features.  
> Most of the features you describe aren't true morphs, they are merely  
> crossfades between multiple outputs (that you don't  get individual  
> outputs for, the pot is your only access). So I think you could  
> achieve similar results with the A-138e as a 3-way crossfader.
> 
> Actually as a side topic which hopefully isn't too DIY and  
> potentially slightly off-topic. I know the EML used a lot of center  
> tapped pots. I'm curious if anyone knows where to obtain some or has  
> had success modifying a standard pot to have an additional center tap?
> 
> As for the ring modulator, as I understand it it's also considered  
> fully balanced modulation with 4 quadrant VCAs that respond to  
> negative voltages. One can vary the index/degree of the modulation  
> and get varying amounts of AM, a key difference would be with AM you  
> can hear the carrier while ring modulation more or less rejects the  
> carrier though not always perfectly. While a lot of newer modules  
> omit a control for less than balanced modulation quite a few older  
> ones had it. Serge, Buchla and PAIA come to mind. Generally one can  
> do one better than EML and get voltage control of the degree of  
> modulation from zero up to ring. That's one big downside of EML, you  
> get some very interesting controls via pots but they are only manual,  
> not VC.
> 
> Nick
>