Doepfer

The 4012 was probably the best known.  Other ARP classic VCFs are the 
4035 and 4072/4075.  There's schematics and info at:
http://www.till.com/arptech/modmain.htm


On May 8, 2006, at 3:10 PM, Bakis Sirros wrote:

> hello michael, anton,
> so, the "classic" ARP filter is the 4012?
> regards,
> Bakis.
>
>
> --- "Michael O." <megathlon2000@yahoo.se> wrote:
>
>> I wouldn't mind a filter like the 4012.. I got an
>> ARP2600 with that
>> filter, and that's awesome! I have no other filter
>> that's near that
>> one.. (And I have a few options to choose from)
>>
>> /Michael
>>
>> --- Anton Coops <dubshot@xs4all.nl> skrev:
>>
>>
>> ---------------------------------
>> Hi Bakis,
>>
>> You're right, this is very important, I was
>> referring to the 'classic'
>> Arp
>> filter that was used in the later Odysseys and the
>> Axxe from 1975 or
>> so, and probably it should be *without* the design
>> flaw that
>> originally cut off frequencies above 11 kHz.
>>
>> Greetings
>>
>> Anton
>>
>> On 8 May 2006, at 10:42, Bakis Sirros wrote:
>>
>>> hello anton,
>>> i'll wait for your detailed explanation regarding
>> your
>>> future module suggestions before i make polls
>> about
>>> them.
>>> regarding the ARP filter module: which ARP filter
>>> should this module be modeled around?
>>> regards,
>>> Bakis.
>>>
>>>
>>>
>>>
>>> --- Anton Coops <dubshot@xs4all.nl> wrote:
>>>
>>>>>>> quality is very high, but more than 500 $
>> is
>>>> quite expensive.
>>>>>> and by the way: I saw, that the cwejman EQ
>> does
>>>> not continuously add
>>>>> or
>>>>>> subtract the corresponding band asyou would
>>>> expect it from a mixing
>>>>>> console's EQ. You have to switch between add
>> or
>>>> subtract. So it is
>>>>>> assumingly nothing else than a A127 plus
>>>> inverters for the original
>>>>> mix
>>>>>> (incl. the switches 5 Euro of material).
>>>>>>
>>>>>> It should be a very simple addon package
>> (one
>>>> TL064, eight resistors,
>>>>>> three switches) which would modify the A127.
>>>>>>
>>>>>> Florian
>>>>>>
>>>>>
>>>>>
>>>>> well, yes, and i guess you also need some
>> vca's
>>>> for
>>>>> voltage-control of bandwidth and level per
>> filter.
>>>>>
>>>>
>>>> Hello Florian, Ingo,
>>>>
>>>> Sounds like a good idea for an a-127 expansion
>>>> module to me!
>>>>
>>>> I agree with Ingo that the ideas that are not
>> yet
>>>> finished should not
>>>> be forgotten, but at the same time it';s fun to
>>>> think of new modules,
>>>> so I actually have several ideas (sorry :)
>>>>
>>>> 1. A second A-108, but this time arp-style
>>>> 2. Equal Temperament Quantizer that does
>> different
>>>> ET's
>>>> 3. Timbral Quantizer that can derive (dynamic,
>> real
>>>> time) scales
>>>> from timbres from vco-type modules, like a
>> custom
>>>> made sinus
>>>> bank, fm-operator, or a custom ring modulator.
>>>> 4. (See 3.) Some oscillators or sound sources
>> that
>>>> would be
>>>> specially built to work togethjer with the
>> timbral
>>>> quantizer, so you
>>>> don't need to do Fourier analysis to derive a
>> scale
>>>> from a timbre, but
>>>> you can derive the spectral information you need
>>>> from the settings
>>>> of the sound source using some (digital)
>>>> mathematics.
>>>> 5. expansion-module for both quantisers (maybe
>> even
>>>> for the a-156)
>>>> for creating custom scales and arpeggio's
>>>>
>>>> I'll write down more about idea's 2-5 as soon as
>>>> possible
>>>>
>>>> Greetings
>>>>
>>>> Anton
>>>>
>>>
>>>
>>> Bakis Sirros - Parallel Worlds
>>> [Doepfer_a100] group owner
>>> http://www.parallel-worlds-music.com
>>> http://www.myspace.com/parallelworldsmusic
>>> http://www.shimarecords.co.uk
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>>> Athens-Greece
>>>
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>
>
> Bakis Sirros - Parallel Worlds
> [Doepfer_a100] group owner
> http://www.parallel-worlds-music.com
> http://www.myspace.com/parallelworldsmusic
> http://www.shimarecords.co.uk
> http://www.rubber.gr
> Athens-Greece
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