Yamaha CS80

I am sure this has been discussed here before, but I'll ask anyway:

Are all of the electronic components of each voice in the CS60 
identical to the CS80's? 

Just curious...........

Yes, but you need to modify an m-series board from a CS50/60 first before 
you can drop it into an 80, im sure kent or scott can give you some better 
technical info.. 

> I am sure this has been discussed here before, but I'll ask anyway: 
> 
> Are all of the electronic components of each voice in the CS60 
> identical to the CS80's?  
> 
> Just curious........... 
> 
 


Regards,
Rob Belcher
www.myspace.com/duplx

I thimnk it might be something to do with resistors in the
'Transposition Gate' section..?

Would I be right in saying that R's 1~5 would need changing and also
the tuning presets, VR's 4,5&6..?

Cheers,
TOM


--- In yamahacs80@yahoogroups.com, blchrr@... wrote:
>
> Yes, but you need to modify an m-series board from a CS50/60 first
before 
> you can drop it into an 80, im sure kent or scott can give you some
better 
> technical info.. 
>

Quazimodo wrote:
> I think it might be something to do with resistors in the
> 'Transposition Gate' section..?
>
> Would I be right in saying that R's 1~5 would need changing and also
> the tuning presets, VR's 4,5&6..?
>   
Here's what page 41 of the service manual says:

      CS80   CS50/60
R1    10k    20k
R2    20k    40k
R3    40k    80k
R4    80k   160k
R5   100    180
VR4  500      1k
VR5    1k     2k
VR6    2k     5k

Basically, the CS80 M-boards are tuned up and octave from the CS50/60
for the same footage inputs.  I don't have the CS50 or 60 schematics to
see how the footage/octave switches are wired to the M-Boards.

It also talks about R6 and R7 in the VCF chips varying from CS80 to
CS50/60 according to rank.  I don't know what that means.  Are the VCFs
hand selected for the different models? 

 David

Could that be keyboard follow???

On Pipe Organs, "Rank" refers to the manuals(keyboard tiers)

-----Original message-----
From: David Rogoff david@...
Date: Wed, 21 Nov 2007 19:10:11 -0700
To: yamahacs80@yahoogroups.com
Subject: Re: [yamahacs80] Re: CS60 vs CS80

Quazimodo wrote:
> I think it might be something to do with resistors in the
> 'Transposition Gate' section..?
>
> Would I be right in saying that R's 1~5 would need changing and also
> the tuning presets, VR's 4,5&6..?
> 
Here's what page 41 of the service manual says:

CS80 CS50/60
R1 10k 20k
R2 20k 40k
R3 40k 80k
R4 80k 160k
R5 100 180
VR4 500 1k
VR5 1k 2k
VR6 2k 5k

Basically, the CS80 M-boards are tuned up and octave from the CS50/60
for the same footage inputs. I don't have the CS50 or 60 schematics to
see how the footage/octaveswitches are wired to the M-Boards.

It also talks about R6 and R7 in the VCF chips varying from CS80 to
CS50/60 according to rank. I don't know what that means. Are the VCFs
hand selected for the different models? 

David




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

I posted the schematic of the CS-60 showing the M board to the Octave  
switches etc.
It is in the Files section.

Regards
Rory McDonald


On Nov 21, 2007, at 7:30 PM, Laurie Curry wrote:

>
> Could that be keyboard follow???
>
> On Pipe Organs, "Rank" refers to the manuals(keyboard tiers)
> -----Original message-----
> From: David Rogoff david@...
> Date: Wed, 21 Nov 2007 19:10:11 -0700
> To: yamahacs80@yahoogroups.com
> Subject: Re: [yamahacs80] Re: CS60 vs CS80
>
> Quazimodo wrote:
> > I think it might be something to do with resistors in the
> > 'Transposition Gate' section..?
> >
> > Would I be right in saying that R's 1~5 would need changing and also
> > the tuning presets, VR's 4,5&6..?
> >
> Here's what page 41 of the service manual says:
>
> CS80 CS50/60
> R1 10k 20k
> R2 20k 40k
> R3 40k 80k
> R4 80k 160k
> R5 100 180
> VR4 500 1k
> VR5 1k 2k
> VR6 2k 5k
>
> Basically, the CS80 M-boards are tuned up and octave from the CS50/60
> for the same footage inputs. I don't have the CS50 or 60 schematics to
> see how the footage/octaveswitches are wired to the M-Boards.
>
> It also talks about R6 and R7 in the VCF chips varying from CS80 to
> CS50/60 according to rank. I don't know what that means. Are the VCFs
> hand selected for the different models?
>
> David
>
> [Non-text portions of this message have been removed]
>
>
> 


rorymcd@...
805-388-1810 Home
805-264-7107 Cell





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