Doepfer

Sorry, I'm at work now and was just not refering to the correct 
jack.  I basically take the output of an envelope and I stick it 
into CV2 of the BBD module.  I also dial-in a bit of feedback.  
Beyond that, only the MIX OUT is connected.


--- In Doepfer_a100@yahoogroups.com, "Adam-V" <adam-v@...> wrote:
>
> Hi,
> 
> You might need to expand on a the first problem little further. 
When
> you say using an envelope as a clock source, presumably you are
> modulating the HSVCO with an envelope, not clocking the BBD with an
> envelope generator?
> 
> Regarding the high pitched noise, it sounds like you are describing
> clock noise which is quite normal and does require a LPF to be 
placed
> at the output of the BBD module in order to remove it. The obvious
> drawback of this is the potential loss of high end audio 
frequencies. 
> 
> Cheers,
> Adam-V
> --- In Doepfer_a100@yahoogroups.com, "regimental1200"
> <regimental1200@> wrote:
> >
> > I meant 4096 stages, not 2096
> > 
> > --- In Doepfer_a100@yahoogroups.com, "regimental1200" 
> > <regimental1200@> wrote:
> > >
> > > I get a similar problem all the time!!!!
> > > 
> > > Happens on a very intermittant basis.  While using an envelope 
as 
> > > clock source, I smack a key and can get that typical repeating 
and 
> > > pitch shifting "Daaaaaaaa-daaaaaaaa-daaaa-da-da-da-da da" 
noise, 
> > and 
> > > then when it feels like it, it stops responding.
> > > 
> > > Also, depending on how I have the delay clock knob position, 
I'll 
> > > get this extremely high resonant noise.  Sometimes it's more 
> > subtle 
> > > like the frequency it's producing is so high that it's not in 
the 
> > > audible spectrum, but its enough to hurt my ears.  I fear that 
> > I've 
> > > even damaged a bit of my high-end with this....
> > > 
> > > Is this a defect in the unit, or is that the clock noise that 
the 
> > > manual talks about generally requiring an LPF?  And if it is, 
> > where 
> > > exactly should the LPF be inserted?
> > > 
> > > 
> > > --- In Doepfer_a100@yahoogroups.com, <hardware@> wrote:
> > > >
> > > > > Hi all,
> > > > >
> > > > > My tapped bbd module suddenly has a limited range, it can 
now 
> > > only
> > > > > do short delaytimes, probably 25-40% of the range it 
should 
> > > have. In
> > > > > other words: it can't produce the aliasing sound anymore. 
The 
> > > first
> > > > > time I fired it up it was ok, second time it had this 
problem. 
> > > Any
> > > > > ideas?
> > > > >
> > > > > greetings, Anton
> > > > 
> > > > Sounds like a fault. Probably the "heater" of the 
temperature 
> > > controlled
> > > > logarithmic converter of the HSVCO is defective. If you are 
able 
> > > to replace
> > > > an integrated circuit we can send you a new one. As all 
circuits 
> > > are
> > > > equipped with sockets no soldering is required but only 
removing 
> > > the old
> > > > circuit and inserting the new one.
> > > > 
> > > > Please tell me your postal address (directly to me, not to 
the 
> > > Yahoo group)
> > > > and we will send you the spare part if you agree. Otherwise 
> > please 
> > > send the
> > > > module for repair.
> > > > 
> > > > Best wishes
> > > > Dieter Doepfer
> > > > (hardware@)
> > > >
> > >
> >
>