[sdiy] Kraakdoos line out

Metrophage c0r3dump23 at yahoo.com
Sun May 15 16:48:55 CEST 2005


Hi Ian!

1. Because, as I mentioned, I am doing something else.
2. Because I don't know any better! I started backwards, just trying to
copy schematics into working synth modules. Only recently have I begun
to be interested in the fundamentals of electronics, so, I am still a
bit on the ignorant side.

I have thought about making a voltage divider, presumably at the op-amp
output, before the transistor amplification. My concern is whether or
not reducing the voltage will remove DC components from the signal. I
guess this would be obvious to others who are more experienced. Also,
the Kraakdoos circuitry is very sensitive - even adding a volume pot to
the speaker I had to try quite a few things, as I was causing the
circuit to cease oscillating. Probably not so much an issue with most
audio circuits, which are designed to not be so flaky.

Again, I will try soon! Don't feel badly about beating me there,
Rafael!

CJ

--- Ian Fritz <ijfritz at earthlink.net> wrote:
> At 02:55 PM 5/14/05, Metrophage wrote:
> >I don't know, I am trying to get a few other projects off of my
> bench
> >now. Don't know when I will try to do the output. Soon, I hope!
> >
> >CJ
> 
> 
> Am I missing something?  Why can't you make a line out in the usual
> way by 
> hanging a voltage divider off the opamp output? 
> 
> 

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