Yahoo Groups archive

Vintage Simmons Drums (UK) Users Group

Index last updated: 2026-04-28 23:14 UTC

Thread

SDS-3 circuit board

SDS-3 circuit board

2005-08-20 by Tom

Gordon,

The SDS-3 circuit board is single sided, I can do some closeups of it,
maybe Paul will put them on simmons.synth.net  ?

Tom W.

Re: [Simmons Drums] SDS-3 circuit board

2005-08-20 by gordon@gjcp.net

>
> Gordon,
>
> The SDS-3 circuit board is single sided, I can do some closeups of it,
> maybe Paul will put them on simmons.synth.net  ?
>
> Tom W.

It seems that the circuit diagrams in the PDF for that page are for the
SDS4.  It should still be possible to copy the SDS3 though.

Gordon.

Re: [Simmons Drums] SDS-3 circuit board

2005-08-20 by Tom Williamson

The PDF on simmons-synth.net is definitely for the SDS-3.
The SDS-4, or SDS Combo as it was also known as, is a 2 channel version
without the special effects channel.

Tom W.

----- Original Message -----
Show quoted textHide quoted text
From: <gordon@...>
To: <Simmons_Drums@yahoogroups.com>
Sent: Saturday, August 20, 2005 11:53 AM
Subject: Re: [Simmons Drums] SDS-3 circuit board


> >
> > Gordon,
> >
> > The SDS-3 circuit board is single sided, I can do some closeups of it,
> > maybe Paul will put them on simmons.synth.net  ?
> >
> > Tom W.
>
> It seems that the circuit diagrams in the PDF for that page are for the
> SDS4.  It should still be possible to copy the SDS3 though.
>
> Gordon.
>
>

Re: [Simmons Drums] SDS-3 circuit board

2005-08-20 by gordon@gjcp.net

> The PDF on simmons-synth.net is definitely for the SDS-3.
> The SDS-4, or SDS Combo as it was also known as, is a 2 channel version
> without the special effects channel.
>
> Tom W.
>

Ah, yeah.  Helps if I actually read it.

I'm going to have a crack at building the oscillator stage on veroboard at
some point over the next week, if I get time.
Gordon.

Re: [Simmons Drums] SDS-3 circuit board

2005-08-20 by Paul Maddox (Mail LIsts)

Tom,

> The SDS-3 circuit board is single sided, I can do some closeups of it,
> maybe Paul will put them on simmons.synth.net  ?

Sure, just email them to me (off list).

Paul

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.