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Doepfer

Index last updated: 2026-04-29 00:15 UTC

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Re: Low frequencies phase shift with A-125.

2012-06-08 by ctujoao

Thanks for the fast answer!

I knew it! I still have to come across a faulty doepfer module. It just doesn't happen, they just work. 

Ok, so does anyone wants to invent a module that would shift LFOs? 

Would be nice to output CVs (any shape, not only sines from quadrature modules), at a desired phase. 



--- In Doepfer_a100@yahoogroups.com, Florian Anwander <fanwander@...> wrote:
>
> Hi
> 
> > Got myself an A-125, which is very efficient with any frequencies
> > within audio range. However it's not dealing very well with LFOs
> > (shift is less than 1/4 of the wave cycle).
> >
> > Can anyone confirm this behavior? Or could the module be a bit faulty
> > (which I doubt)?
> >
> > While I'm at it: if the A-125 is not very good to shift LFOs by
> > design, does anyone know if the A-101-3 any better at this kind of
> > sport?
> 
> The LFO is simply outside the working range of the Phaser. Phasers are 
> in principle filters - so called allpass filters. Though they seem not 
> to filter the signal at all, they have a center frequency. The lowest 
> possible center frequency is higher than your LFO frequency. This is the 
> reason why the LFO is not shifted.
> 
> I assume it would be the same with the A-101-3.
> 
> Florian
> 
> -- 
> http://fa.utfs.org/
>

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