Vintage Simmons Drums (UK) Users Group

Good luck in cloning the SSM.

LJ

http://www.electromancer.com/artist.php?id=3b4bf9c30d
http://hem.spray.se/ppgwave/studiopics.html

----- Ursprungligt meddelande ----- 
Från: "ttete500" <ttete500@...>
Till: <Simmons_Drums@yahoogroups.com>
Skickat: den 1 maj 2005 22:58
Ämne: [Simmons Drums] Cloning the SDS5 module??

> Hello ,
> I am an electronician and I love electronic drums.
> I have some SIMMONS schematics but they are very bad quality.
> I think it will be possible to build a SDS5 module ,it use standart ICs
> (LM324 op amps,CA3080 otas...)
> There is just the noise filter chip (SSM2044) that we could replace 
> with OTAs(CA3080,LM13700)to emulate this VCF.
> I could redraw this schematic but I don't have caps and resitors 
> values.I also know that there is some little diferences betwen 
> bass,snare,tom channels.(for example modulation of the VCO for the 
> snare,no filter sweep for the snare,bend env...)
> If I could have these modules, I will be able to redraw these 
> schematics accuratly with components values and,why not,to redraw a PCB 
> to clone this drum synth.
> We could also try some mods!
> Is there someone interested?
> Perhaps someone who own a SDS5 can help me?
> I think it could be very interesting!
> I am always working on drawing schematics from my own SDS9,my 
> SDS1000,my PEARL DRX1 module(a very good sounding analog drum module!).
> I have good qualitie schematics of TAMA TS305,TAM500 drum module(you 
> could find these on internet!)
> I hope that there are some people interested.But sorry for my bad 
> english,I am French.
>                      Thierry
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> Yahoo! Groups Links
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> Hello ,
> I am an electronician and I love electronic drums.
> I have some SIMMONS schematics but they are very bad quality.

Mine are OK and yes, I still haven't scanned them for "our" site...

> I think it will be possible to build a SDS5 module ,it use standart ICs
> (LM324 op amps,CA3080 otas...)

And the SSM's???

> There is just the noise filter chip (SSM2044) that we could replace
> with OTAs(CA3080,LM13700)to emulate this VCF.

So much for the genuine SSM-sound then... But I'd love to compare!

> Perhaps someone who own a SDS5 can help me?

I've promised Paul the schematics for our simmons site. But no time to
scan... I spent my weekend without broadband connection fixing my Yamaha
SS-30 instead and launched some neat Ultravox strings... =)

> I think it could be very interesting!
> I am always working on drawing schematics from my own SDS9,my
> SDS1000,my PEARL DRX1 module(a very good sounding analog drum module!).
> I have good qualitie schematics of TAMA TS305,TAM500 drum module(you
> could find these on internet!)

Nothing for the Pollard Syndrum QUad 478 then? I could really use those!!!

> I hope that there are some people interested.But sorry for my bad
> english,I am French.

I understand you Thierry (did you get my reply on the Ebay question?)! Keep
that Wasp buzzing!


electronically yours, jesper
- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se

> There is just the noise filter chip (SSM2044) that we could replace 
> with OTAs(CA3080,LM13700)to emulate this VCF.

Be aware that the SSM2044 VCF doesn't sound anything like an OTA
filter.  The 2044 is a sort of folded ladder filter, with more in common
with a Moog filter.  (I can look up the patent number for the SSM if
you're interested).  The difference is clearly audible with sustained
notes, but may not be apparent with percussive noise.

> I am always working on drawing schematics from my own SDS9,my 
> SDS1000,

I have SDS9 and SDS1000 schematics, which I will scan when I've
finished the SDE manual (almost done).


Steve


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