Hello,
Me two I want to build my own SDS5 analog drum synth....I had a SDS5 brain from ebay 4 years ago and I have redraw schematics from this unit...I have noticed errors on the SIMMONS schematics....
I think we have to replace the SSM2044 by a discrete filter (like for example on the Tama Techstar with LM13700 otas) and redesign the enveloppes generators to have a cleaner triggering.I think also to replace the Click/Drum balance control by a Click level control (like SDS8,Techstar...)
On my SDS5 I noticed a big DC thump at the output of the SSM2044 filter when applying filter sweep and I don't like it(neither the speakers!)so removing the SSM2044 that filter only noise and replacing with discrete cheap filter will be the better solution.
I will be OK for a simplified design (without preset,just some pots...)because I am competent in electronic but not on programming (Pics....)
See you soon
Thierry EPPHERRE from France
--- In Simmons_Drums@yahoogroups.com, "jabathaslut" <warlandr@...> wrote:
>
> Hi guys,
> I'm in the process of a rather large project and I need a really big favour from an owner of an SDSV and an Analog Claptrap. I have sets of fairly good schematics for these units including the elusive hihat and cymbal modules. I have always wanted these units but due to age and miss handling most available are in pretty poor nic. The affordable ones anyway. I am in the process of developing and building a completely authentic but modernized version of the SDSV. I want to include the clap trap as an additional module as well. As with the original it will be modular in design but will be fully programmable with the ability to save patches and sets. There will be options for manual knobs sets if people want a simplified version. The whole lot will be based on the eurorack format. My ask is a biggy. Can an owner of an original SDSV and analog Claptrap open their units up and take clear and detailed photos of the internals, PCB etc. I will be setting up a web site to document the project so all info will be posted up as the job moves along. I need the detailed photos so as to check the correctness of my available schematics. The SDSV used the SSM2044 for its filter, these are available but the supply is dwindling so a discrete replication is being worked on. All help will be appreciated.
> My email is warlandr@... if u can send any pics. Thanks
>