RE : Re: Replacement output stage

Yes, I saw them, but you get a lot of new problems
with the headphones output, it's still as noisy as
before, but there's a sudden gain boost when you rise
the volume which seems to clip the LM386 amplifier.

Maybe it's just a matter of filtering the power going
to the output chips, because the line outputs used
with a separate hedphones amp produces much less noise
than using the headphones output. 

Now that I see that someone is interested, I'll start
to look for possible upgrades.

Antoine

--- caladann <caladann-/[email protected]> a écrit :

> I am very interested!! I saw some plans on the web
> to boost the 
> output level by replacing some resistors, I dont
> know if you have 
> seen them...
> Something must be done to bring this synth to its
> full potential!
> 
> --- In [email protected], "antdes45"
> <antdes45@...> wrote:
> >
> > Any features you'd like to have? Is anyone
> interested? 
> > 
> > I think I found a solution to have some external
> controls which
> > wouldn't require modifications of the synth case
> itself. I'll get 
> into
> > details as I'm not 100% sure it would be
> convenient.
> > 
> > --- In [email protected], Antoine Deschênes
> <antdes45@> 
> wrote:
> > >
> > > Hi everyone,
> > > 
> > > I told a while ago that I would make (or at
> least try to make) a 
> new 
> > > output stage for the K5 (To have less background
> noise) so I 
> think it 
> > > should be time to start making some schematics
> and try them! ;)
> > > 
> > > The biggest problem I think I'll have is with
> the power supply. 
> It only 
> > > provides +6V DC to the opamps, and to get the
> best sound as 
> possible, a 
> > > new voltage would be requiered.
> > > 
> > > I'll try to keep the current potentiometer
> working, and maybe 
> add an 
> > > option to bypass it so it could, as an example,
> have a fixed-
> volume MIX 
> > > and 1 to 4, but the volume control still working
> for the 
> headphones, or 
> > > something like that.
> > > 
> > > I think I should make it as flexible as possible
> by using 
> jumpers. (But 
> > > I will not provide any external switches, that's
> up to you, I 
> will
> > never 
> > > drill an hole in the synth.)
> > > 
> > > Any suggestions?
> > > 
> > > Cheers,
> > > Antoine
> > >
> >
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
> 
> 


Antoine Deschênes

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