[sdiy] A potential problem with a voice-assignable organ

[thx1138]

On 6/6/09 4:24 PM, "Dave Manley" <dlmanley at sonic.net> wrote:

> thx1138 wrote:
>> On 6/5/09 8:30 PM, "Dave Manley" <dlmanley at sonic.net> wrote:
>> 
>>   
>>> thx1138 wrote:
>>>     
>>>> Hi Tom,
>>>> When I was working at E-mu many years back we implemented a
>>>> Hard-Sync/Soft-Sync on our Analogue VCO Module platform.
>>>> 
>>>> I should look this up and see if this was true and post it up to you guys.
>>>> 
>>>> Regards,
>>>> 
>>>> Terry Shultz
>>>>       
>>> Hi Terry,
>>> 
>>> It would be great to see any of the E-mu schematics online.  It is one
>>> of the only
>>> companies for which there is almost nothing online (at least I couldn't
>>> find much
>>> last time I looked).
>>> 
>>> -Dave
>>>     
>> Hi Dave,
>> 
>> Yes, I know of the elusive E-Mu schematics . I fortunately have a complete
>> archive of every module we ever built and/or shipped including Front Panel
>> Layout and calibration details. Unfortunately it is Blue-Print and photo
>> copy material. A real pain to convert to scanned docs.
>> 
>> However, I am willing to redraw interesting circuits of the modules folks
>> need to peruse if I have the time.
>> 
>> Any idea where I can find SSM devices such as ssm2020, 2010, 2030, 2040,
>> etc. ?
>> 
>> Some of the later E-Mu submodules are using the SSM chips we designed.
>> 
>> I do have early schematics of modules that were using discrete VCA /
>> Transistor designs. Just more work to build but as I said I have the entire
>> archive still in my file cabinet.
>> 
>> Regards,
>> 
>> Terry
>> 
>>   
> Hi Terry,
> 
> I for one would prefer to see the older discrete designs, given most of
> us won't be able
> to get our hands on SSM parts.
> 
> 
> -Dave
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
Hi Dave,

I agree. Many of my old customers from the past are still pestering me to
re-launch some of these old designs for Modular Synth's.

It is a shame that Pratt-Read went out of business, Doug Curtis, (Curtis
Electro Music) passed away. A couple of us are thinking to re-releasing some
of the old Modular designs again.

There still is a thriving market for good hand built electronics.

I did some work for Harald Bode one summer re-engineering the Bode Vocoder
to use newer filter designs based upon op-amps etc. instead of the heavy
inductor based designs.

I still  have one of the first Bode Vocoders and Frequency Shifters he built
out in Tonawanda New York. They work perfectly and are a thing of real
German Engineering Quality. Meaning they are built like a Tiger Tank.

Where are you based at?

Regards,

Terry