RE : Re: RE : Re: Replacement output stage

Yep, but if you don't have a good mixer it will just
not work at high volumes. 

The main problem for me is the headphones jack. It's
as noisy on both K5s I have.
--- Jeff B <jeffbee42-/[email protected]> a écrit :

> If I remember correctly, the (stock) K5 is a bit
> noisy.  When you replace the resistors the overall
> output goes up but the noise dB remains the same, so
> the signal-to-noise ratio goes up and sound sounds
> less noisy.
> 
> Jeff
> 
> 
> ----- Original Message ----
> From: Antoine Deschênes <antdes45-FFYn/[email protected]>
> To: [email protected]
> Sent: Friday, December 15, 2006 8:26:11 AM
> Subject: RE : [k5synth] 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@yahoo. com> 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 k5synth@yahoogroups .com, "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 k5synth@yahoogroups .com, 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.)
> 
> > > > 
> 
=== message truncated ===


Antoine Deschênes

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