[sdiy] help finding roland filter schematics?

[Scott Nordlund]

The SH-1000, SH-2000, SH-3 (not SH-3a), SH-5, System 100 (not 100M) and TB-303 all used diode or transistor ladder filters.  All others, as far as I know, used OTA designs, though there were plenty of variations (using 3080, BA662, custom chips that included buffers and a resonance OTA, in both 4 pole and state variable topologies).

----------------------------------------
> From: subjectivity at hotmail.com
> To: fanwander at mnet-online.de
> Subject: RE: [sdiy] help finding roland filter schematics?
> Date: Wed, 29 Apr 2009 15:08:34 +0000
> CC: synth-diy at dropmix.xs4all.nl
>
>
>
> after more searching (and printing out the SH7, i realized it looks great!) i really only still need the SH1 filter values.
>
>
> btw...are there any other missing roland series that use OTA filters? i know the DELTA does...any others?
> thanks so much for your help and wonderful site!!
>
>
>
>
>
> --------------------------------------------
> check out various dan music at:
>
> http://www.myspace.com/lossnyc
>
> (updated monthly)
>
> http://www.soundclick.com/lossnyc.htm
>
>
>
> http://www.indie911.com/dan-snazelle
>
> (or for techno) http://www.myspace.com/snazelle
>
> ALSO check out Dan synth/Fx projects:
>
> AUDIO ARK:
>
> www.youtube.com/watch?v=TJRpvaOcUic
>
> www.youtube.com/watch?v=BqIa_lXQNTA&feature=channel_page
>
> www.youtube.com/watch?v=V4nJPjGgOcU&feature=channel_page
>
> and soundtrack/design work:
>
> NEW: check out Dan's sound design from the 1998 award winning film SAFARI by catherine chalmers
>
> http://www.catherinechalmers.com/videos.cfm
>
>
>
>
>
>
> ----------------------------------------
>> Date: Wed, 29 Apr 2009 16:51:52 +0200
>> From: fanwander at mnet-online.de
>> To: subjectivity at hotmail.com
>> CC: synth-diy at dropmix.xs4all.nl
>> Subject: Re: [sdiy] help finding roland filter schematics?
>>
>> Hi Dan
>>
>> the schematics are linked in that file ;-)
>>
>> http://fa.utfs.org/diy/roland_filters/SH1.jpg
>> http://fa.utfs.org/diy/roland_filters/SH2.jpg
>> http://fa.utfs.org/diy/roland_filters/SH5.jpg
>> http://fa.utfs.org/diy/roland_filters/SH7.jpg
>> http://fa.utfs.org/diy/roland_filters/SH09.jpg
>>
>> These cutouts are mostly from scans which Mark Glinsky is selling. They
>> were intended for informational use only. I could do some littlebit
>> large cutouts, but if you want the full schemoe, then please buy it from
>> Mark. He does a great job on that and I don't want to spoil his business.
>>
>> Also there is http://spash.free.fr/download/synthmanuals/ from Greg
>> Baumont with a lot of service manuals.
>>
>> Florian
>>
>>
>> Dan Snazelle schrieb:
>>>
>>> hey there
>>>
>>> in my quest to better understand OTA filters, i have been trying to find some of the old roland OTA filter schematics
>>> in readable scans.
>>>
>>> i found this CHART which lists which of the roland filters use regular OTA's.
>>>
>>> http://fa.utfs.org/diy/roland_filters/index.html
>>>
>>>
>>> so i am looking for readable SCHEMATICS of the SH1, SH2, SH7, and maybe sh09
>>>
>>> also...these are probrably good ones to look at in general for vco and lfo ideas,etc.
>>>
>>> a few questions...does anyone know how much a BA662 compares to a ca3080?
>>>
>>> also...in the later ROLAND OTA CHIPS are these basically just 4 otas on a chip? or is there something fancier going on? are these available as schematics anywhere?
>>>
>>> Thanks SO MUCH!!
>>>
>>>
>>>
>>>
>>>
>>>
>>> --------------------------------------------
>>> check out various dan music at:
>>>
>>> http://www.myspace.com/lossnyc
>>>
>>> (updated monthly)
>>>
>>> http://www.soundclick.com/lossnyc.htm
>>>
>>>
>>>
>>> http://www.indie911.com/dan-snazelle
>>>
>>> (or for techno) http://www.myspace.com/snazelle
>>>
>>> ALSO check out Dan synth/Fx projects:
>>>
>>> AUDIO ARK:
>>>
>>> www.youtube.com/watch?v=TJRpvaOcUic
>>>
>>> www.youtube.com/watch?v=BqIa_lXQNTA&feature=channel_page
>>>
>>> www.youtube.com/watch?v=V4nJPjGgOcU&feature=channel_page
>>>
>>> and soundtrack/design work:
>>>
>>> NEW: check out Dan's sound design from the 1998 award winning film SAFARI by catherine chalmers
>>>
>>> http://www.catherinechalmers.com/videos.cfm
>>>
>>>
>>>
>>> _______________________________________________
>>> Synth-diy mailing list
>>> Synth-diy at dropmix.xs4all.nl
>>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>>
>>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy

_________________________________________________________________
Windows Live™ SkyDrive™: Get 25 GB of free online storage.  
http://windowslive.com/online/skydrive?ocid=TXT_TAGLM_WL_skydrive_042009