Re: Re: K5 distorted output from patches using Source-2

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-/[email protected]> 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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