Re: K5 distorted output from patches using Source-2

The balance only controls the volume for S1 and S2. If S1 is all the 
way down S2 is cranked. Other than the DDA envelope (oh yeah the DHG 
levels too) ahhh, where can S2 be turned down to sublight.

The aftertouch was easy. There's 2 pots on the backside of the MI-004 
board they say Gain (VR1) and Offset (VR2) on them. Open Midi-Ox and 
watch the pressure change the values for aftertouch from 00 to F7. 
Adjust these pots to get the best performance for your preferences. 
Offset is where it starts to kick in. Then the gain adjusts how 
quickly F7 cranks in. I like a smooth contollable range that doesn't 
rip my tendons out.... That's why I can tell the notes from G3 to D4 
in this K5 aren't as responsive as the rest. 

Whoohoo!!! I'm talking to Kawai about the Service Manual. They are 
soooo gooood in this day and age of crapping on us hardware guys. 
Oops did I say e-mu? Awww darn! Dirty bird!! I want my money back!!!

Anyway the manual should be on its way....  Fran   

--- In [email protected], James Bong <jamesbong@...> wrote:
>
> How does it sound if you turn S1 all the way down, and
> start turning up S2? Same distortion?
> 
> Oh, and where was the after-touch adjustment? I'm
> always afraid I'm going to tip my stand over when I'm
> using after touch modulation!
> 
> James
> --- narfman96 <narfman96@...> wrote:
> 
> > Yes I do have a scope I just haven't gotten that far
> > yet. Yesterday I 
> > rebuilt the keyboard. This synth has a nice action
> > when it's all 
> > greased up and triggers every note. I found the
> > aftertouch 
> > adjustments and got it more sensitive than the key
> > bending tipping 
> > over the stand mode it was originally set for. The
> > aftertouch strip 
> > has a few spots that are less sensitive but hey it's
> > a beast....
> > 
> > If it will help I can post the DAC's datasheet here
> > in the files 
> > section so you can see what weird output
> > configurations it can have. 
> > Either current or voltage outputs can be used. There
> > isn't any pot 
> > for the offset zero. Also it seems like Kawai
> > doesn't use much of the 
> > gain that's available. Maybe that's why it's so
> > noisy.
> > 
> > The patches sound like they should if I turn the
> > balance so S2 is off 
> > (-31). Except of course they're thin and lifeless
> > without the other 
> > voice mixed in. I saved a bank that way so I could
> > check out the 
> > keyboard. I can see where some of the noise comes
> > from. The high 
> > frequency response goes way out there. Most of these
> > 80's and 90's 
> > synths have low pass filters. This thing sounds wide
> > open on top end! 
> > Probably so you can hear the 128 harmonics in all
> > their glory.
> > 
> > Hopefully I won't be beat when I get home from work
> > so I can play 
> > around with this some more. Still haven't heard from
> > Kawai yet about 
> > the schematics. Also they always have me sign their
> > non-disclosure 
> > form so I'm leery about openly posting them in the
> > group. Of course 
> > helpful individuals are a different story. Right???
> > 
> > Fran
> > 
> > --- In [email protected], James Bong
> > <jamesbong@> wrote:
> > >
> > > You wouldn't happen to have an oscilloscope to
> > verify
> > > that the output of this chip is actual problem, do
> > > you? 
> > > 
> > > If you do get the schematics, could you possibly
> > get
> > > them scanned to share with the rest of us?
> > > 
> > > James
> > > 
> > > --- narfman96 <narfman96@> wrote:
> > > 
> > > > I resoldered everything involved in this part of
> > the
> > > > circuit. There 
> > > > is a feedback resistor on the DAC for the audio
> > > > output. This measures 
> > > > 6.8k same as the working one. Maybe tonight I'll
> > try
> > > > lowering this 
> > > > value to see if the gain decreases.
> > > > 
> > > > I'm not having much luck finding a PCM55HP DAC.
> > > > Digikey lists it for 
> > > > $38.50 with a long, long lead time... Crap!
> > Anyone
> > > > know of a source?
> > > > 
> > > > Hopefully Kawai gets back to me today about the
> > > > schematic.
> > > > 
> > > > Thanks, Fran
> > > > 
> > > > --- In [email protected], James Bong
> > > > <jamesbong@> wrote:
> > > > >
> > > > > Does this chip have a bias circuit to set the
> > > > min/max
> > > > > output voltage scale? It could be something as
> > > > simple
> > > > > as a cold solder joint finally loosing contact
> > and
> > > > > changing the bias. I'd check/re-solder the
> > solder
> > > > > joints to everything connected to the chip,
> > and
> > > > the
> > > > > chip it's self.
> > > > > 
> > > > > James
> > > > 
> > > >
> > >
> > 
> > 
> >
>



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