K5synth

Thanks for the reply,
  Do you have a schematic of the output section?  Metal film resistors
will help with some noise and tantilum caps with a little too.  

I had to replace the display light yesterday, I found a guy on ebay
selling el foil in a kit with a new iverter for 12.00.  The panel was
just big enough to make both ends of the display but it looks great
now.  I may replace the green with blue of white at some point.  I
just used the stock inverter circuit, but while I had the unit apart I
resoldered all the power supply connections.  

I'm really interested in some of the programs here like the waveform
converter.  I think the K5's sound were cool but still untapped.  The
file K3newage I downloaded here really shows off some of good stuff
that the unit can do.

Thanks again
Mark aka Synthmusicianmark

--- In k5synth@yahoogroups.com, Antoine Deschênes <antdes45@...> wrote:
>
> Wow! You found a brand new unit!
> 
> There are some patches in the files section, but I don't know if it's a 
> better idea to just put a link here.
> 
> I don't know if replacing the opamps will help much, because normally, 
> the TL0 opamp series are used in almost everything and are very quiet. 
> An opamp with better power supply rejection could help. I have some SMD 
> OPA2134 waiting for a small PCB to try them. As for the other 
> components, there are not much in the signal.
> 
> I frankly don't know where all the noise is coming from but I suspect 
> the demultiplexing ICs (The synth uses two mono DACs and has 4 channels 
> -> The DAC outputs are switched between a channel and an other 
> constantly. There might be switching noise. I'd like to try to monitor 
> the switch ICs outputs one day to see if there's noise (It means we 
> couldn't do anything about it.) But I doubt that they are the problem 
> because there would have been no noise at all when the volume would
be @ 
> it's minimum position.
> 
> synthmusicianmark a écrit :
> > Well I'm glad to have found this group, I've just recently purchased
> > another K5m to replace the one I sold a few years ago.  I hope I can
> > be of some help here too.  If you'd like to check out my website here
> > is the URL www.thesynergystudios.com  I just wrote an article on the
> > K5m and am working on another one about replaceing the opamps and
> > compnets on the output stage for better s/n ratios.  I'm also going to
> > be adding K5 support to my download area so if you have any patches
> > you'd like to send me to put in the D/L section let me know.
> >
> > Regards
> > Synthmusicianmark
> >
>