Oops!
Thierry, I promised you to send two SSM2044! They are already here at my place, but I FORGOT IT!!! They will leave next week. Sorry!
See you soon
Michael
It is a good idea to go to an international newspaper store (airport) to buy the german magazine "Sound & Recording". Page 92 and 93 will show a few real funny pictures of my place...
----- Original Message -----
From: ttete500
To: Simmons_Drums@yahoogroups.com
Sent: Sunday, October 11, 2009 2:44 PM
Subject: Re: [Simmons Drums] SDSV - presets only
Hello all and hello to my friend Michael!
Yes Michael is rigth,on the SDS5 sound selector is missing a pull down resistor at the clocks input pin 3 and 11 (they are tied together ) of the 4013 dual flipflop.And I wonder how it was working without (CMOS input should not stay no polarised like you could with TTL input that have built in pull up resistor).
I have to put these resistors on my SDS5 that have trouble changing preset (but perhaps the push buttons contacts are also dirty???)
Michael,you have really good improvment with TL084 instead of LM324???
I know that TL074 have a really better slew rate than LM324...
I will try....
See you soon all
Thierry EPPHERRE from France
--- 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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