Yamaha CS80

> Hi everybody,
>
> I just took my CS80, serial number 1591, to a tech in the Netherlands to have it thoruoghly overhauled. He was recommended to me by various CS80 owners in The Netherlands, and according to him my CS was number 15 in one and a half year´s time (and, as he added to my pleasure, the nicest-looking he had ever seen).
>
> Let´s keep all fingers crossed that there are no hidden defects which will surface after the obvious ones have been fixed.
>
> Stephen
>
> ____________________________________________________________
>
> "Pay your respect to the vultures, for they are your future." (Jhonn Balance / Coil)
>
> Finally available: Stephen Parsick -- Traces of the Past Redux, reissued with three previously unreleased bonus tracks.
>
> It´s out: [´ramp] & markus reuter -- "ceasing to exist", a gorgeous dark ambient album. available through our webshop at www.doombient.com
>
> For info and audio, please visit the official [´ramp] website at www.doombient.com
>
>
> [Non-text portions of this message have been removed]
>

--- In yamahacs80@yahoogroups.com, blchrr@... wrote:
>
> Ill keep my fingers crossed for you.. Im picking up my 80 and
Synthex this
> week back from restoration.. happy days... :)
>
> > Hi everybody,
> >
> > I just took my CS80, serial number 1591, to a tech in the
Netherlands to have it thoruoghly overhauled. He was recommended to me
by various CS80 owners in The Netherlands, and according to him my CS
was number 15 in one and a half year´s time (and, as he added to my
pleasure, the nicest-looking he had ever seen).
> >
> > Let´s keep all fingers crossed that there are no hidden defects
which will surface after the obvious ones have been fixed.
> >
> > Stephen

--- In yamahacs80@yahoogroups.com, blchrr@... wrote:
>
> Ill keep my fingers crossed for you.. Im picking up my 80 and
Synthex this
> week back from restoration.. happy days... :)
>
> > Hi everybody,
> >
> > I just took my CS80, serial number 1591, to a tech in the
Netherlands to have it thoruoghly overhauled. He was recommended to me
by various CS80 owners in The Netherlands, and according to him my CS
was number 15 in one and a half year´s time (and, as he added to my
pleasure, the nicest-looking he had ever seen).
> >
> > Let´s keep all fingers crossed that there are no hidden defects
which will surface after the obvious ones have been fixed.
> >
> > Stephen






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

> Hey guys,
>
> All you CS80 owners who recently had yours in for 'restoration' - did
> any of the techs have to replace any of the IC's..?
> Oscillator, Waveshape Convertor, Filter or VCA etc..?
> Would be interesting to know, do the tech's have a source of these.
>
> Thanks.
> TOM
>
>
>
>
>
> --- In yamahacs80@yahoogroups.com, blchrr@... wrote:
>>
>> Ill keep my fingers crossed for you.. Im picking up my 80 and
> Synthex this
>> week back from restoration.. happy days... :)
>>
>> > Hi everybody,
>> >
>> > I just took my CS80, serial number 1591, to a tech in the
> Netherlands to have it thoruoghly overhauled. He was recommended to me
> by various CS80 owners in The Netherlands, and according to him my CS
> was number 15 in one and a half year´s time (and, as he added to my
> pleasure, the nicest-looking he had ever seen).
>> >
>> > Let´s keep all fingers crossed that there are no hidden defects
> which will surface after the obvious ones have been fixed.
>> >
>> > Stephen
>
>

>
> I wonder if voice cards could be made that could be drop in replacements
> based on discreet components? Juergen, Scott, Kent any of you guys think
> that could be done?
>
>

> This has been a long-standing project of mine, to make an M board
> using non-custom parts. I know how to make the VCO & transposer; I know
> how to make the VCFs; I know how to make the EGs. The only thing left
> is making the VCAs which, while the ostensibly the simplest, really need
> to exhibit the closest possible behavior to the IG00151 as the signal
> path of each board uses 4 of them. (There are 6 on each board, but 2 of
> them are used by the EGs).
>
> Crow
> /**/
>
> blchrr@... wrote:
>
>> I wonder if voice cards could be made that could be drop in replacements
>> based on discreet components? Juergen, Scott, Kent any of you guys think
>> that could be done?
>>

> This has been a long-standing project of mine, to make an M board
> using non-custom parts. I know how to make the VCO & transposer; I know
> how to make the VCFs; I know how to make the EGs. The only thing left
> is making the VCAs which, while the ostensibly the simplest, really need
> to exhibit the closest possible behavior to the IG00151 as the signal
> path of each board uses 4 of them. (There are 6 on each board, but 2 of
> them are used by the EGs).
>
> Crow
> /**/
>
> blchrr@... wrote:
>>
>> I wonder if voice cards could be made that could be drop in replacements
>> based on discreet components? Juergen, Scott, Kent any of you guys think
>> that could be done?
>>
>>
>

> Hi Scott.
>
> It's good to know you're still working on this! Any plans for
> additional features beyond the original M-Board? I'd really like to see
> a Moog-ladder filter on board. This is one really nice feature of
> Arturia's VST. Also, two, tunable VCOs per board would be great. It
> would let you have much more flexibility than the fixed tunings of the
> Feet selectors and give a massive four VCOs per note!
>
> David
>
>

>
> The EGs btw are (lowers voice to a mumble) *digital*, using PICs and
> calculated rate tables similar to the EG-S chip of a DX voice engine.

On 9/25/07 5:51 PM, "David Rogoff" <david@...> wrote:

>
>
>
>
> Scott Rider wrote:
>> > I have no plan for designs beyond the standard M board at this time.
>> > I need to proof and verify that the basic voice card works "as
>> > advertised" so that actually using it to replace broken cards means the
>> > machine still sounds like a CS-50/60/80.
> Seems very reasonable!
>> >
>> > The EGs btw are (lowers voice to a mumble) *digital*, using PICs and
>> > calculated rate tables similar to the EG-S chip of a DX voice engine.
> A couple of questions here. How fast are the envelope samples? What
> kind of digital/analog interpolation/smoothing are you using? Also,
> I've thought many times about replacing most of the KAS and KBC boards
> with one, cheap FPGA. The problem is that the CS80 runs all the digital
> logic off +8.5v/-6.5v (= 15volt supply) to interface with the analog
> stuff and modern digital chips will fry at any anything over 3.3v. How
> do you handle the PIC? Outboard DAC? A billion level shifters?
>
> Thanks & good work!
>
> David
>
>



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

>
>> The EGs btw are (lowers voice to a mumble) *digital*, using PICs and
>> calculated rate tables similar to the EG-S chip of a DX voice engine.
>>
> A couple of questions here. How fast are the envelope samples? What
> kind of digital/analog interpolation/smoothing are you using? Also,
> I've thought many times about replacing most of the KAS and KBC boards
> with one, cheap FPGA. The problem is that the CS80 runs all the digital
> logic off +8.5v/-6.5v (= 15volt supply) to interface with the analog
> stuff and modern digital chips will fry at any anything over 3.3v. How
> do you handle the PIC? Outboard DAC? A billion level shifters?
>
>

>
> Hey guys,
>
> All you CS80 owners who recently had yours in for 'restoration' - did
> any of the techs have to replace any of the IC's..?
> Oscillator, Waveshape Convertor, Filter or VCA etc..?
> Would be interesting to know, do the tech's have a source of these.
>
>