Doepfer

I believe you're indulging in a somewhat academic distinction here 
between diodes qua diodes and transistors configured as diodes.

As Bruce Duncan, who designed Modcan's EMS-styled diode filter points 
out about:

"The overall sound [of the EMS-style diode filter] is 303ish with 
very high resonance capabilities."

Again, I suggest listening to the sound of his demo:

http://www.mazilu.com/mp3/Diode.MP3

The sound is certainly much cleaner than a 303's, for obvious 
reasons, but one could only describe it as indeed "303ish".

I really don't know why some people have such objections to diode 
filters sounding like a 303, or 303s having diode filters.


--- In Doepfer_a100@y..., bakis Sirros <synth_freak_2000@y...> wrote:
> hello,
> if you read carefully to the text about the tb303
> filterthat you have told us about,you'll see that the
> tb303 uses "...transistors used as diodes..."and NOT
> diodes as the ems filter.the ems filter uses diodes!!!
> bakis.
> 
> 
> --- modularcharles <ospengler@r...> wrote:
> > Yes, I should have added that while the TB-303 has
> > the most widely-
> > known diode filter, emulated on umpteen computers in
> > ReBirth, in 
> > Oakley's superladder filter and TB-3031, and
> > elsewhere, it's 
> > basically a -18 dB version of the Moog design, and
> > that the Doepfer 
> > diode filter would be patterned on the EMS, as is
> > the version sold by 
> > Modcan.
> > 
> > People who want to get a sense of the sound of an
> > EMS-type diode 
> > filter can check out this mp3 of the Modcan version:
> > 
> > http://www.mazilu.com/mp3/Diode.MP3
> > 
> > As you'll hear, yes, it has a unique sound and
> > definitely not that of 
> > the TB-303 (which also has a unique sound).
> > 
> > 
> > --- In Doepfer_a100@y..., phaedra@t... wrote:
> > > An original moog filter like the minimoog has 24
> > dB-lowpass-
> > filters, a four time special tuned cascade of 6dB.
> > > the TB303 has a rebuild 3 cascade with 18 dB.,
> > which have lite 
> > other tunings and another saturation.
> > > The particular of the A-102 is the dependence
> > between emphasis and 
> > cutoff, there are modulations between the 
> > > two components by tuning one of it or both.
> > > It is not the same as the A-103, which is a
> > rebuild of the TB303 
> > filter.
> > > If you ever heard of or worked with an EMS Synth,
> > you would know 
> > the difference between these filters.
> > > I'm not a technician, but I have good ears and
> > know both.
> > > The A-102 will be a very special filter with a
> > very good and 
> > different sound to the TB303, believe me!
> > > best regards
> > > Axel
> > > 
> > > Am 05.06.02 18:08:35, schrieb "modularcharles"
> > <ospengler@r...>:
> > > 
> > > >The TB-303 filter is in fact a diode filter, as
> > described in this 
> > > >document:
> > > >
> > >
> >
> >http://machines.hyperreal.org/manufacturers/Roland/TB-
> > > >303/info/roland.TB-303.secrets?0048
> > > >
> > > >Therefore, it is your information which is wrong
> > and not mine.
> > > >
> > > >All the best back,
> > > >
> > > >--Charles
> > > >
> > > >--- In Doepfer_a100@y..., phaedra@t... wrote:
> > > >> The TB303-filter is a three time moog cascade
> > and has nothing to 
> > do 
> > > >with diode filtering.
> > > >> Also when many people havn't even heard of EMS
> > is it wrong to 
> > give 
> > > >such information.
> > > >> Better nothing than something wrong, okay?
> > > >> all the best
> > > >> axel
> > > >> 
> > > >> Am 05.06.02 17:55:24, schrieb "modularcharles"
> > <ospengler@r...>:
> > > >> 
> > > >> >No argument there.
> > > >> >
> > > >> >However, that wasn't the question.  The
> > question was "what 
> > > >instrument 
> > > >> >is *usually* associated with a diode filter". 
> > The obvious 
> > answer 
> > > >is 
> > > >> >the TB-303, fetishized by technoheads
> > worldwide.  Most of those 
> > > >> >people haven't even heard of EMS.
> > > >> >
> > > >> >Therefore the word "bullshit" really doesn't
> > apply here.  
> > Better 
> > > >luck 
> > > >> >next time, though -- I'm sure you'll find a
> > good use for the 
> > word 
> > > >and 
> > > >> >all that caffeine sometime soon.
> > > >> >
> > > >> >
> > > >> >--- In Doepfer_a100@y..., phaedra@t... wrote:
> > > >> >
> > > >> >> Bullshit! It is the filter of the EMS
> > synthesizers!
> > > >> >> 
> > > >> >> 
> > > >> >> Am 05.06.02 17:42:22, schrieb
> > "modularcharles" 
> > <ospengler@r...>:
> > > >> >> 
> > > >> >> >The TB-303.
> > > >> >> >
> > > >> >> >--- In Doepfer_a100@y..., "buechlerjoe"
> > <buechlerjoe@t...> 
> > > >wrote:
> > > >> >> >
> > > >> >> >> Meanwhile, what's the diode filter's
> > claim to fame? What 
> > > >> >instrument 
> > > >> >> >is 
> > > >> >> >> usually associated with a diode filter?
> > > >> >> >> 
> > > >> >> >> Joe
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> >To unsubscribe from this group, send an email
> > to:
> > > >> >doepfer_a100-unsubscribe@y...
> > > >> >
> > > >> > 
> > > >> >
> > > >> >Your use of Yahoo! Groups is subject to 
> > > >http://docs.yahoo.com/info/terms/ 
> > > >> >
> > > >> >
> > > >> >
> > > >
> > > >
> > > >
> > > >To unsubscribe from this group, send an email to:
> > > >doepfer_a100-unsubscribe@y...
> > > >
> > > > 
> > > >
> > > >Your use of Yahoo! Groups is subject to 
> > http://docs.yahoo.com/info/terms/ 
> > > >
> > > >
> > > >
> > 
> > 
> 
> 
> =====
> synthfreak(parallel worlds)
> athens-greece
> [Doepfer_a100] group owner-moderator
> 
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