A lot of highpass filters seem to exhibit this behavior -- my Doepfer
multimode, my ASys multimode, the multimode on my Alesis Andromeda, even
my Electrix Filter Factory a little bit. My only highpass that
completely cuts things off at the top of its range is my -24 dB Doepfer
highpass.

> -----Original Message-----
> From: thepeak [mailto: thepeak@... ]
> Sent: Wednesday, October 09, 2002 8:15 AM
> To: Doepfer_a100@yahoogroups.com
> Subject: RE: 1 Re: voltage lists & WASP query
>
>
> my professional reccomendation for you is that you twidle
> with all your knobs and hope for the best!!!!!! Miss Lee
> (Sound engineer extrodinare!)
> -----Original Message-----
> From: jmaddocks1975 [mailto: jmaddocks1975@... ]
> Sent: Thursday, October 10, 2002 3:46 AM
> To: Doepfer_a100@yahoogroups.com
> Subject: 1 Re: voltage lists & WASP query
>
>
> Hi Evan,
> I don't know how to fix the module but here's a simple patch to
> solve it.
>
> Wasp filter(a124) to Dual VCA(a132) audio in.
> Control Voltage Source(a176) CV1 to Multiples.
> multiples 1 out to Voltage Invertor(a175)
> Voltage Invertor to Wasp filter CV1
> multiples 2 out to Dual VCA CV input.
>
> As you sweep the CV source knob (CV1) the hi pass will sweep up and
> the volume of the VCA will get quieter until silent.
>
>
> John.
>
>
>
>
>
>
> --- In Doepfer_a100@y..., "Evan Lorden" <funkfumes@h...> wrote:
> > Hi Doepfer interestees,
> > Thanks for those lists. Quite handy.
> >
> > I have a WASP query.
> > I'm hoping someone can tell me how to calibrate the cutoff
> frequency so that
> > I can cut the sound out completely using the high pass filter.
> > I hope that's a clear request.
> > When I use the low pass setting, I can cut the sound out so that
> nothing
> > gets through, but when I use the high pass setting (or the band
> pass, for
> > that matter) the freq control knob ceases to have effect for the
> top quarter
> > turn, and there is quite a lot of the frequency range left
> unfiltered. ie.
> > All the top range is unfilterable.
> >
> > I unscrewed the unit from the frame and twiddled the two trim pots
> on the
> > circuit, which seem to be designed for the purpose of calibrating
> the cutoff
> > in some way, but neither bring the high end cutoff range up.
> >
> > Do other people's WASP filters work the same way
> > I find it quite unsatisfactory, in a way.
> >
> > It seems to me it may simply be a fault of the circuit, though,
> rather than
> > poor calibration. If so, can anybody tell me if there is a
> component or two
> > that I can replace to extend the range
> >
> > Thanks!
> > Evan On Earth,
> > Melbourne, Australia.
> >
> >
> > ------
> > Message: 2
> > Date: Mon, 23 Sep 2002 20:46:09 -0000
> > From: "Joe Buechler" <buechlerjoe@t...>
> > Subject: Re: voltage range of all the a100 CV cources
> >
> > According to my cheapo voltmeter (which has an analog dial hehe):
> >
> > A165: 0 to 9V
> > A160: 0 to 10V
> > A147 -4.5 to +4.5V
> > A155 Gate: 0 to 10V
> > A155 CV top: 0 to 4V
> > A155 CV bottom: 0 to 7V
> > A190 Gate: 0 to 9V
> > A191 LFO: -5 to +5V
> > A191 CV: 0 to 5V
> > A141: 0 to 6V
> > A162: 0 to 10V
> > A140: 0 to 7V
> > A119 Gate: 0 to 8V
> > A119 Env: 0 to 8.5V
> > A176: 0 to 5.5V
> > A145: -5 to +5V
> >
> > I seem to recall Timothy did a more comprehensive list
> earlier when
> > the A150 bleed-thru issue was being discussed.
> >
> > Joe (not a wizard)
> > A110 sine, pulse +/- 5.5V(there's no coupling capacitor, so stays
> > this no matter what pulse width set to), tri +/- 7V, saw +/-5V
> > A111 pulse +/- 4.5V (output is AC coupled, so this shifts to make
> DC
> > level zero, depending on pulse width), saw, tri +/- 3V, sine +/-
> 4.5V
> > A117 digital noise 0 E12V, oscillator outputs (very)
> approx +/- 5V
> > A119 gate out 0 E9V
> > A129/3 CV out (nothing in) 0 E5.5V (daisy-chaining two sections
> can
> > add the same to this, to get up to 11V out)
> > A140 envelope 0 E7V
> > A141 envelope 0 E6V
> > A145 saw, sine, square +/- 4.5V, triangle +/- 5V
> > A146 bipolar pulse +/- 4.5V, unipolar pulse 0 E8V, variable tri
> +/-
> > 4V
> > A147 tri +/- 6V, sine +/- 5.5V, square +/- 5V, saw (unipolar) 0 E
> 7V
> > A156 trigger out 0 E5V
> > A160/161 clock outputs 0 E12V
> > A163 divided output +/- 2.5V; (DC output if capacitor shorted 0 E
> 5V)
> > A174: X/Y offset set to 0, full range of joystick gives
> approx -4V
> > to +4V; joystick central, turning X or Y offset gives approx the
> > same, -4V to 4V (hence you can get 0 E8V out etc.)
> > A179 gate 0 E9V, CV out swings through 12V, so -12V E0
> to 0 E12V
> > possible depending on offset setting
> > A190 gate 0 E9V
> >
> > Some of these readings are quite rough and ready, and there may
> > obviously be some variation from module to module; also some
> VCO/LFO
> > outputs change with frequency.
> >
> > Maybe other members can supply ranges for those modules I don't
> have,
> > e.g. A176 etc.
> >
> > _________________________________________________________________
> > Chat with friends online, try MSN Messenger:
> http://messenger.msn.com
>
>
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