Aaron,
I am not close to God and I am no star ;-). All I want is to keep the spirit alive, so I spread my poor knowledge where ever I can. And I pray, that some day there will be a Simmons fan who shares knowledge with ME, because I don't know everything. Like the schematics of the SDS6's CPU board! It must be somewhere and many, many of this group need it!
But nobody did publish it yet!
Best
Michael
----- Original Message -----
From: the_green_dome
To: Simmons_Drums@yahoogroups.com
Sent: Sunday, October 11, 2009 2:45 PM
Subject: Re: [Simmons Drums] SDSV - presets only
Michael (not god - but very close)
Thank you so much for this help - you're a star, and I'm very grateful.
My electronics skills are pretty basic so I will need to find somebody I can trust to do this - I would not trust myself in case I damage the modules further.
Love my SDSV and love this group too!
Kind regards
Aaron
--- In Simmons_Drums@yahoogroups.com, "Michael Buchner" <buchnerelectronics@...> wrote:
>
> Hi and congratulations Aaron, you new SDSV owner!
> I don't know how deep you are into electronics, but you can print this answer on a piece of paper and take it to a tech at your hometown, he should understand.
> After checking the mechanical items like the correct function of the select buttons and the right supply voltages 15/-15V, go on like this:
> The sound selector circuit is one 4013, one 4556, one 4011 and three 4016 easy to locate on the PCB of each module near the front panel. Check the 4013 and the 4556 first. If you don't get 4556, get 4555 and remove and shortcut the inverter 4011. Now the most important point: The 4013 (double flipflop) available TODAY are different to the 4013 available in the past when your beast was built. If you exchange the 4013, this will happen: In the moment you press a preset button, the right preset will show up, but vanishes if you let the button go. These new 4013 don't "hold" the preset for some reason. But don't worry: Solder a 100k resistor between pin 11 of the 4013 and GND and it will work fine. May be someone changed the 4013 earlier and did not know this magic trick?
> And if your tech is "into" your SDSV, let him change the quad OPamps in the rack responsible for final output amplification. It should be two 324 fitted as original. Replace it by some TL74 or TL84 and the sun will shine...
>
> Best wishes and good luck
> Michael
>
>
>
> ----- Original Message -----
> From: the_green_dome
> To: Simmons_Drums@yahoogroups.com
> Sent: Saturday, October 10, 2009 4:47 PM
> Subject: [Simmons Drums] SDSV - presets only
>
>
> Hi
>
> I've got an SDSV !!!!!
>
> It's seen some action in its long life. The outer case looks very battered. It's the standard bass / snare / 3 x toms (no cymbal, no hihat!).
>
> The problem I have with it is that I can only use the factory presets. On the bass, snare, tom 1 and tom 2, I cannot even select any of the other three "channels" for each module. For tom 3, I can select the others, but as soon as I hit the pad and trigger the sound, it reverts to the preset channel. (The non-preset channels all work on tom 3 - and I can get some amazing sounds out of it - but only if I hold one of the four buttons in - bad for my drumming technique...).
>
> Has anybody come across this problems before - or have any ideas how I could fix this?
>
> By the way - the presets may not be cool, but wow they sound incredible. So much depth to the noise being made. I'm triggering them from some SDS-800 (mk 3, mk 4?) pads via the Synth In jacks - thought I might have difficulty, but with the sensitivity turned up, the SDSV is triggering perfectly.
>
> Thanks in advance for any advice you can offer.
>
> Aaron
>
>
>
>
>
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>
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