Vintage Simmons Drums (UK) Users Group

Hi,

Does anybody know what the four-prommed SDS7 cards are used for? Are 
the sounds selectable like on a Simmons SDS1000, or are they parts of 
sounds on separate chips like on rival machines such as the LinnDrum, 
Oberheim DMX, or Sequential Circuits Drumtraks. I found a Simmons SDS7 
tom card on eBay today and just wondered that. I know that it has 
the "Townhouse Tom", "Gated Tom", "Conga 1", and "Conga 2" EPROMS 
installed on an expansion card that is mounted where the single EPROM 
goes on a digital-analog SDS7 card. The expansion board is not 
something made or installed by a third-party user because it 
said "Simmons Group Centre" on the expander board. I have not seen this 
before. I have only seen the digital-analog card that holds one EPROM 
and the digital card that holds two EPROMs. Can anyone tell me what the 
four-prom cards are for?

Thanks for your help

Dean Rumsey

Isn´t there any switch for selecting which eprom to read from ?

Alternatively, maybe the analog section is bypassed and its programming features are used to change eprom.

WT

http://medlem.spray.se/waveterm/LJLab2006/

  ----- Original Message ----- 
  From: hamsterdrum85 
  To: Simmons_Drums@yahoogroups.com 
  Sent: Friday, December 21, 2007 11:58 PM
  Subject: [Simmons Drums] Questions on four-prommed SDS7 cards


  Hi,

  Does anybody know what the four-prommed SDS7 cards are used for? Are 
  the sounds selectable like on a Simmons SDS1000, or are they parts of 
  sounds on separate chips like on rival machines such as the LinnDrum, 
  Oberheim DMX, or Sequential Circuits Drumtraks. I found a Simmons SDS7 
  tom card on eBay today and just wondered that. I know that it has 
  the "Townhouse Tom", "Gated Tom", "Conga 1", and "Conga 2" EPROMS 
  installed on an expansion card that is mounted where the single EPROM 
  goes on a digital-analog SDS7 card. The expansion board is not 
  something made or installed by a third-party user because it 
  said "Simmons Group Centre" on the expander board. I have not seen this 
  before. I have only seen the digital-analog card that holds one EPROM 
  and the digital card that holds two EPROMs. Can anyone tell me what the 
  four-prom cards are for?

  Thanks for your help

  Dean Rumsey



   

[Non-text portions of this message have been removed]

Then I probably suppose that there are no Simmons SDS7 cards that 
will hold more than 16k (depending on the card type). I'm wondering 
if there is a possibility to make an SDS7 hold cards that contain 
multiple 8k or 16k EPROMs as one sample, such as making the full-
length Linn crash sample converted to 8-bit linear from the original 
4k chips with the use of an Oberheim Prommer and place the newly 
burnt 8k or 16k EPROMs on the cards.

--- In Simmons_Drums@yahoogroups.com, "WT" <waveterm@...> wrote:
>
> Isn´t there any switch for selecting which eprom to read from ?
> 
> Alternatively, maybe the analog section is bypassed and its 
programming features are used to change eprom.
> 
> WT
> 
> http://medlem.spray.se/waveterm/LJLab2006/
> 
>   ----- Original Message ----- 
>   From: hamsterdrum85 
>   To: Simmons_Drums@yahoogroups.com 
>   Sent: Friday, December 21, 2007 11:58 PM
>   Subject: [Simmons Drums] Questions on four-prommed SDS7 cards
> 
> 
>   Hi,
> 
>   Does anybody know what the four-prommed SDS7 cards are used for? 
Are 
>   the sounds selectable like on a Simmons SDS1000, or are they 
parts of 
>   sounds on separate chips like on rival machines such as the 
LinnDrum, 
>   Oberheim DMX, or Sequential Circuits Drumtraks. I found a Simmons 
SDS7 
>   tom card on eBay today and just wondered that. I know that it has 
>   the "Townhouse Tom", "Gated Tom", "Conga 1", and "Conga 2" EPROMS 
>   installed on an expansion card that is mounted where the single 
EPROM 
>   goes on a digital-analog SDS7 card. The expansion board is not 
>   something made or installed by a third-party user because it 
>   said "Simmons Group Centre" on the expander board. I have not 
seen this 
>   before. I have only seen the digital-analog card that holds one 
EPROM 
>   and the digital card that holds two EPROMs. Can anyone tell me 
what the 

>   four-prom cards are for?
> 
>   Thanks for your help
> 
>   Dean Rumsey
> 
> 
> 
>    
> 
> [Non-text portions of this message have been removed]
>

--- In Simmons_Drums@yahoogroups.com, "hamsterdrum85" 
> before. I have only seen the digital-analog card that holds one EPROM 
> and the digital card that holds two EPROMs. Can anyone tell me what the 
> four-prom cards are for?

I read somewhere that there was a modification you could get that took
either a bigger EPROM or a daughterboard with more sockets, and
allowed you to switch samples with the resonance control.  IIRC the
lower two bits of the resonance value set which EPROM was selected -
obviously the difference it makes to the sound is tiny.

I'd love to get a hold of one of these, to work out what the mod is
and maybe copy it.

Gordon