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 Forum index » DIY Hardware and Software
Simmons SDS 3 - DIY?
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mono-poly



Joined: Jul 07, 2004
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PostPosted: Fri Mar 23, 2007 11:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the link to the pdf.
I dunno why the SDS3 sounds so damn good.
I had a lot of drummachine;s 808.909.c78,syncussion,tama etc etc
But nothing had that damn good sound of the SDS 3!
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richardc64



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PostPosted: Fri Mar 23, 2007 2:34 pm    Post subject: Reply with quote  Mark this post and the followings unread

ickystay wrote:
You can see the twisted wires of the LM301 noise source (I always wondered about that on the schematic).


!!! I haven't seen anything like that in ages! (Since I lost interest in shortwave.) It's called a gimmick capacitor, fairly common in high frequency R.F. circuits. Here it's being used as the opamp compensation. Twisting the wires tighter or looser increases or decreases the capacitance.

http://en.wikipedia.org/wiki/Gimmick_capacitor
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para



Joined: Oct 16, 2006
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PostPosted: Fri Mar 30, 2007 6:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

if someone does decide to make some boards i'd be in for a few


steven
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mono-poly



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PostPosted: Sat Mar 31, 2007 5:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Yeah i would get like 8 boards to.
Damn i never should have sold this machine ever.
This is the most regreted thing i ever sold.
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CJ Miller



Joined: Jan 07, 2007
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PostPosted: Sun Apr 01, 2007 10:29 am    Post subject: Reply with quote  Mark this post and the followings unread

para wrote:
if someone does decide to make some boards i'd be in for a few


steven


Me too! Me too! I love analog drums and percussion of various sorts, and these sound great. I'd be down for several PCBs if any existed.
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rubendelacosta



Joined: Dec 25, 2005
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PostPosted: Mon Apr 09, 2007 5:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

Must.......have..........argh
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elektro80
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PostPosted: Mon Apr 09, 2007 5:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

I have no time to invest in recreation of the SDS-3 right now, but I would definitively grab some PCBs and buy in on a group buy for the parts and stuff.

The SDS-3 was/is simply perfect. 8 channels of SDS-3 madness is just what the doctor ordered.

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mono-poly



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PostPosted: Tue Apr 10, 2007 8:08 am    Post subject: Reply with quote  Mark this post and the followings unread

Come on you freaks! Razz
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dave_b



Joined: Apr 01, 2007
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PostPosted: Thu Apr 12, 2007 10:52 am    Post subject: Reply with quote  Mark this post and the followings unread

Is there a consensus regarding the sound of the SDS3 vs. the SDSV? The SDS3 looks like it could be built less expensively.
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mono-poly



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PostPosted: Thu Apr 12, 2007 11:51 am    Post subject: Reply with quote  Mark this post and the followings unread

The SDS-3 did blow away my SDS-V
But i think people in the 80's tought it sounded to synthetic.
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para



Joined: Oct 16, 2006
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PostPosted: Thu Apr 12, 2007 12:33 pm    Post subject: Reply with quote  Mark this post and the followings unread

i was thinking single or dual modules not a full eight. i don't really want eight. i was thinking 3 or 4. probably end up doing stripboards if pcb's aren't made, but i'm in no rush.


steven
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elektro80
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PostPosted: Thu Apr 12, 2007 12:42 pm    Post subject: Reply with quote  Mark this post and the followings unread

mono-poly wrote:

But i think people in the 80's tought it sounded to synthetic.


Simmons discontuned a lot of gear really fast. Obviously the silly analogue stuff had to go. Shocked Wink Most of the Simmons products are collectible, but few are as musical, useful and fun as the SDS-3.

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mono-poly



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PostPosted: Wed May 02, 2007 6:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

Is the SDS3 love all gone?
Someone should stand up and do that pcb design Smile
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para



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PostPosted: Wed May 02, 2007 7:04 pm    Post subject: Reply with quote  Mark this post and the followings unread

yeah i was just thinking about this earler today. i was under the impression that the "channel 5" section of this was actually a mixer. i didn't bother really looking at it before.
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mono-poly



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PostPosted: Wed May 02, 2007 10:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

There are 4 drum voices and a modulationbus witch you can route to the drum voices.
I would be intersted in single voice prints from the drum channels.

Still a bit disapointed here that none of the freaks jumped in yet.
Because this is the only device i regret selling in the past the most.
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Uncle Krunkus
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PostPosted: Thu May 03, 2007 4:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Should I do a stripboard version? Shocked
I'll get around to it one day! Wink
Don't hold your breath though! Laughing

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elektro80
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PostPosted: Thu May 03, 2007 4:45 am    Post subject: Reply with quote  Mark this post and the followings unread

The thing about the SDS3 is that you might want to have trillions of these. A PCB design, possibly with more synth channels, is probably the best approach. That said, it would probably be smart to have some cunning tronics head to look over the parts list and figure out if the cloned SDS3 should be upgraded/updated/redesigned in order to be cheap and easy to build. Still, the sound of the original SDS3 is really something.
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mono-poly



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PostPosted: Thu May 03, 2007 7:27 am    Post subject: Reply with quote  Mark this post and the followings unread

IMHO a synth channel on a card would work out the best.
The modulation part could be done by other modules in your modular rig.
And you could easy add another synth channel in future.
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bubblechamber



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PostPosted: Thu May 03, 2007 1:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

i've got some free time coming up, i'll take a shot at laying out the PCB.
As for the sound of the original, here are a few thoughts after looking over the service material:
1. metal can 3080s
2. single sided PCB
3. hand drawn layout with few right angles and much thicker lines than we use now.
that, plus a great design....
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mono-poly



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PostPosted: Thu May 03, 2007 5:17 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hey Bubbl great man!
Maybe we can do a groupbuy ca3080's?
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mono-poly



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PostPosted: Thu May 03, 2007 10:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

I can get metalcan ca3080's for $6 each.
So i would love to see a design with just the old parts Very Happy
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bubblechamber



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PostPosted: Thu May 03, 2007 11:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

me too. i'm kind of a stickler for those types of things.
i'd be in for 5 or 6 metal 3080s regardless of anything else
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mono-poly



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PostPosted: Sat May 05, 2007 8:01 am    Post subject: Reply with quote  Mark this post and the followings unread

Maybe we should use the IC version of the ca3080 instead of the metalcan.
It shouldn;t really matter in sound.
Honkongsuperseller sells them on ebay but i am to frighten to buy them.
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bdu



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PostPosted: Sat May 05, 2007 10:26 am    Post subject: Reply with quote  Mark this post and the followings unread

mono-poly wrote:
Maybe we should use the IC version of the ca3080 instead of the metalcan.
It shouldn;t really matter in sound.


That would be my take on the matter...
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bubblechamber



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PostPosted: Sat May 05, 2007 10:52 am    Post subject: Reply with quote  Mark this post and the followings unread

i could lay it out to take both. whether or not the chip versions of the 3080 sound the same as the can version is probably about as a productive a topic as the mac/pc debate.
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