Yamaha CS80

Howdy. This is my first post. I hope someone can help...

I did some digging online and it [I]seems[/I] like it's possible to add CV inputs to the CS 50 and 60. Sounds like some people have done it and there's a link in the comments on the CS-60 page on VSE to a fleabay auction that had the CV mods.

Anyone have any info? Any techs done it?

I don't really wanna MIDI my 50 up for a few different reasons but CV/gate would be amazing for getting it talking with my other gear.

Cheers,
Karl

if you are only referring to pitch CV, it's probably not easy and I would recommend some other solution such as a keyboard interface middleman.

Hello pinky

Am 13.06.2014 12:57, schrieb pinky pinksoir@... [yamahacs80]:

> Thanks mr. Yeah it's just the pitch CV I'd be looking for. That's a
> bummer that it's not so easy. I wouldn't be doing it myself, I'd bring
> it to a tech if that makes any difference. I don't really want to put a
> MIDI kit into it, for a few reasons, one of which is the cost...

Adding voltage inputs for each voice to a polyphonic CS is not a big
technical problem.

But the real question is: what will be the source that will control this
modified Synth?
The CS-Series is V/Hz not V/Oct. So you'd need an external
voltage-source, which produces a V/Hz characteristics. Beside Yamahas
own monophonic CS-Synths and Korgs MS10, MS20, and SQ10 I wouldn't know
any keyboard, that is suitable.

Some polyphonic MIDI interfaces like the big Kenton, Doepfer MCV24 or
the EES CV7 can produce V/Hz voltages - but in this case you will be in
the range of a $500-device (minimum).

So: an integrated MIDI-interface makes most sense.


Florian

So is it doable? Has anyone done it before?

On Jun 13, 2014 12:34 PM, "pinky" <pinksoir@...> wrote:

Hi Florian,

Thanks for the reply. I use Expert Sleepers Silent Way to control my Hz/V synths. It is capable of producing up to 6 CVs for polyphony. I currently use it to control my MS20 and CS15. It converts MIDI messages into CV via my DC coupled audio interface (modified Presonus Firepod). There is also a dedicated euro rack module available for it. 

On Fri, Jun 13, 2014 at 12:06 PM, Florian Anwander fanwander@... [yamahacs80] <yamahacs80@yahoogroups.com> wrote:

 

Hello pinky

Am 13.06.2014 12:57, schrieb pinky pinksoir@... [yamahacs80]:

> Thanks mr. Yeah it's just the pitch CV I'd be looking for. That's a
> bummer that it's not so easy. I wouldn't be doing it myself, I'd bring
> it to a tech if that makes any difference. I don't really want to put a
> MIDI kit into it, for a few reasons, one of which is the cost...

Adding voltage inputs for each voice to a polyphonic CS is not a big
technical problem.

But the real question is: what will be the source that will control this
modified Synth?
The CS-Series is V/Hz not V/Oct. So you'd need an external
voltage-source, which produces a V/Hz characteristics. Beside Yamahas
own monophonic CS-Synths and Korgs MS10, MS20, and SQ10 I wouldn't know
any keyboard, that is suitable.

Some polyphonic MIDI interfaces like the big Kenton, Doepfer MCV24 or
the EES CV7 can produce V/Hz voltages - but in this case you will be in
the range of a $500-device (minimum).

So: an integrated MIDI-interface makes most sense.

Florian

Hi guys,
I have complete cs80 voice card for sale if anyone's looking for some parts.
Its complete with all the rare IG chips, looking for £200 for it, that's a
firm price.
Im in the UK but happy to post worldwide.
Please feel free to send me a message if interested.
Regards,
Rob.

Hi. So I've contacted my local synth tech and he said he'd look into doing it for me but asked if I had any links for what to do. Does anyone have any links or schematics for adding CV for pitch? Cheers.

On Jun 16, 2014 7:07 PM, "pinky" <pinksoir@...> wrote:

So is it doable? Has anyone done it before?

On Jun 13, 2014 12:34 PM, "pinky" <pinksoir@...> wrote:

Hi Florian,

Thanks for the reply. I use Expert Sleepers Silent Way to control my Hz/V synths. It is capable of producing up to 6 CVs for polyphony. I currently use it to control my MS20 and CS15. It converts MIDI messages into CV via my DC coupled audio interface (modified Presonus Firepod). There is also a dedicated euro rack module available for it. 

On Fri, Jun 13, 2014 at 12:06 PM, Florian Anwander fanwander@... [yamahacs80] <yamahacs80@yahoogroups.com> wrote:

 

Hello pinky

Am 13.06.2014 12:57, schrieb pinky pinksoir@... [yamahacs80]:

> Thanks mr. Yeah it's just the pitch CV I'd be looking for. That's a
> bummer that it's not so easy. I wouldn't be doing it myself, I'd bring
> it to a tech if that makes any difference. I don't really want to put a
> MIDI kit into it, for a few reasons, one of which is the cost...

Adding voltage inputs for each voice to a polyphonic CS is not a big
technical problem.

But the real question is: what will be the source that will control this
modified Synth?
The CS-Series is V/Hz not V/Oct. So you'd need an external
voltage-source, which produces a V/Hz characteristics. Beside Yamahas
own monophonic CS-Synths and Korgs MS10, MS20, and SQ10 I wouldn't know
any keyboard, that is suitable.

Some polyphonic MIDI interfaces like the big Kenton, Doepfer MCV24 or
the EES CV7 can produce V/Hz voltages - but in this case you will be in
the range of a $500-device (minimum).

So: an integrated MIDI-interface makes most sense.

Florian

Hi

Am 20.06.2014 05:42, schrieb Cooper Sloan mistercooper@...
[yamahacs80]:

> Its kind of one of those 'if you have to ask it isn't a good idea'
> scenarios.

I just was about writing the same. If a tech isn't able to find the the
right place for the mod in service manual, then he is not the right
tech. It does not mean, that he is a bad technician, but he is not
knowledged in the polyphonic CS-Series.

You wouldn't bring a Ferrari to a Toyota Garage for repair...

Florian

Thanks. The tech in question has over 30 years experience and has serviced CS synths before. He has agreed to look at doing the mod, so just wants any information currently available to be provided if possible. Of course if either of us feels uncomfortable going forward with the mods then it won't go ahead.

On Jun 20, 2014 8:39 AM, "Florian Anwander fanwander@... [yamahacs80]" <yamahacs80@yahoogroups.com> wrote:

 

Hi

Am 20.06.2014 05:42, schrieb Cooper Sloan mistercooper@...
[yamahacs80]:
> Its kind of one of those 'if you have to ask it isn't a good idea'
> scenarios.
I just was about writing the same. If a tech isn't able to find the the
right place for the mod in service manual, then he is not the right
tech. It does not mean, that he is a bad technician, but he is not
knowledged in the polyphonic CS-Series.

You wouldn't bring a Ferrari to a Toyota Garage for repair...

Florian

This has now been sold to Sufian, thanks for the inquiries

All that remains is one SH board for £50
My email: blchrr (AT) homecall (DOT) co (DOT) uk

Thanks all

> Hi Rob, I am interested in the voicecard, but I couldn't reach off YahooGroups (your mail address is not showing), Can you mail me at intel70@... , thanks regards
> Sufian
>

All spare circuit boards have now been sold, thanks for the interest

> This has now been sold to Sufian, thanks for the inquiries
>
> All that remains is one SH board for £50
> My email: blchrr (AT) homecall (DOT) co (DOT) uk
>
> Thanks all
>
>> Hi Rob, I am interested in the voicecard, but I couldn't reach off YahooGroups (your mail address is not showing), Can you mail me at intel70@... , thanks regards
>> Sufian
>>
>
>

Anyone who just wants individual IGxxxx voice chips I have a few in stock except the LFO chip.