Yamaha CS80

Hey Mike,

Are you able to describe the fix/modification in general terms?


Andrew K


> Max Fazio <faxiomas@...> wrote:
> 
> Hi Mike
> Can you post those files from the CS60 you talked about and get an 
> insight about the KAS' bug? Myself likes the effect a lot...
> M
>   ----- Original Message ----- 
>   From: Mike 
>   To: yamahacs80@yahoogroups.com 
>   Sent: Tuesday, April 26, 2011 3:53 AM
>   Subject: [yamahacs80] Re: Having a problem with my CS80
> 
> 
>     
>   I can fix the problem if you live in Chicago or want to ship it to 
> me:) Unfortunately, the engineers made an error when they designed the 
> KAS and SH boards. Fortunately, it can be corrected. My fix removes 
> about half of the double triggering too.
> 
>   Here's how I illustrate the bug to my customers: Play a C chord on the 
> 8' footing in your right hand with two C's an octave apart in the left 
> hand on C1 & C2. Remove your right hand and take your pinky off C1. The 
> C under your thumb should be waaay off now. Now play a B flat1 with your 
> index finger without removing your thumnb on C2 and listen to C2 jump 
> up! The double triggering issue makes the problem more apparent. Long 
> sustain in sustain I makes it more apparent too. 
> 
>   A lot of folks don't even notice because the bass notes are so 
> distorted in machines that haven't been tuned or serviced with new caps.
> 
>   In my opinion, this bug is one of the reasons that people think the CS 
> series goes out of tune so much and has a bad reputation!
> 
>   If anybody cares, I'll post an audio file of a CS-60 that I'm about to 
> fix up and a CS-80 that I just fixed the bug on.
> 
>   -Mike
> 
>   --- In yamahacs80@yahoogroups.com, "Max Fazio" <faxiomas@...> wrote:
>   >
>   > It's part'n'parcel of the lovely 80.... ;-)
>   > 
>   > M
>   > ----- Original Message ----- 
>   > From: Tommy Priakos 
>   > To: yamahacs80@yahoogroups.com 
>   > Sent: Saturday, October 16, 2010 12:27 AM
>   > Subject: Re: [yamahacs80] Re: Having a problem with my CS80
>   > 
>   > 
>   > 
>   > Has anyone had a horrendous change in pitch in one of the oscilators 
> while playing chords with the sustain going? The slider/fader can be as 
> little as a quarter of the way up on the sustain and I get these off-key 
> drifts that make you cringe.
>   > 
>   > Sent from my iPhone
>   > 
>   > 
>   > 
>   > 
>   > 
>   > [Non-text portions of this message have been removed]
>   >
> 
> 
> 
>   
> 
> [Non-text portions of this message have been removed]