[sdiy] Analog synths with 2 pole filters

[Luís Marka]

I believe the Jupiter 8 in 12dB mode is also a 2-pole filter. Am I right 
here??!?

On 2/21/2013 2:46 AM, Andrew Simper wrote:
> Thanks Doug!
>
> I'll add them to the list, and re-post it with [OT] in the subject :)
>
> Andy
>
>
>
> On 21 February 2013 12:58, Doug Terrebonne <dougt55 at yahoo.com> wrote:
>> Actually most 2-poles DO oscillate, your friend has it backwards... You can add
>> ARP Odyssey whiteface mkI, OB-Xa, and OB-8 (if you adjust the 2-pole res trimmer
>> to osc)...
>>
>> Doug
>> synthparts.com
>>
>>
>>
>> ----- Original Message ----
>>> From: Andrew Simper <andy at cytomic.com>
>>> To: synthdiy diy <synth-diy at dropmix.xs4all.nl>
>>> Sent: Wed, February 20, 2013 6:41:24 PM
>>> Subject: Re: [sdiy] Analog synths with 2 pole filters
>>>
>>> On 21 February 2013 10:34, Andrew Simper <andy at cytomic.com> wrote:
>>>> Hi  Guys,
>>>>
>>>> I'm having a discussion with a friend who said that "most  analog
>>>> synths with 2-pole filters won't self-oscillate". I know quite a  few
>>>> analog synths with 2-pole filters that do self osc, so I thought  I'd
>>>> write up a list to shed more light on the situation.
>>>>
>>>>   Can you guys please help me fill in the considerable missing gaps by
>>>>   naming some more and/or correcting what I already have? I know that
>>>> you  can make ladder / cascade / svf / sallen key 2-pole analog filters
>>>> that  self oscillate, this is really just seeing how most production
>>>> synths  have been designed.
>>>>
>>>> Analog synths with 2 pole filters that self  oscillate
>>>> --
>>>> Korg MS-10 / MS-20 / Monotron / Monotribe (sallen  key)
>>>> Steiner Parker Synthacon (sallen key)
>>>> Oxford Synth Company  OSCar (svf)
>>>> Electronic Dream Plant Wasp (svf)
>>>> Oberheim Xpander  (cascade)
>>>> Formanta Polyvoks (svf)
>>>> Arturia Minibrute (sallen  key)
>>>> Elektron Analog 4 (svf)
>>>> Dark Energy v2 (svf)
>>>> Future  Retro XS (svf)
>>>>
>>>> Analog synths with 2 pole filters that don't self  oscillate
>>>> --
>>>> Oberheim SEM (svf)
>>>> Roland JP6 (svf)
>>>>   Alesis A6 (svf)
>>>> Prophet 8 / Prophet 08 (cascade)
>>>> Yamaha CS 80 /  CS 40 (svf)
>>> And another, no self osc in 2 pole:
>>> Oberheim  OB8
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