[sdiy] reamp?

[Happy Harry]

Not Fair (completely)

If I'm building a fuzzbox (for instance) I could use a very low
input impedance. When its off I can use the bypass switch to
disconnect it...

So in that case I can "abuse" what would be the normal guitar
loading, knowing that I will not notice after the fuzz stage.

I'm doing this with a hex pickup... my loading is 1K ohm. It would
probably kill all "fidelity" but I want fundamental anyway... harmonics 
would screw me up. With a 1K the NE5532 is a very happy
preamp.

There is a lot of strange interaction in pedals, and some of it
is more like "features" than "bugs".  I have sometimes added buffer
circuits to pedals, only to have users complain that they don't sound
'right' anymore.

Like those SICK PUPPIES who actually LIKE the sound of BBDs... you
KNOW who YOU are !!!

H^) harry

PS: Guitar pickups these days have a very BROAD spectrum of impedance
ranges.



>From: Grant Richter <grichter at asapnet.net>
>Reply-To: grichter at asapnet.net
>To: <owner-synth-diy at dropmix.xs4all.nl>, <debus at cityweb.de>
>CC: <synth-diy at dropmix.xs4all.nl>
>Subject: Re: [sdiy] reamp?
>Date: Fri, 24 Aug 2001 14:10:15 -0500
>
>It is a rather poor design that is dependent on the source. Any halfway
>decent design will have a buffer at the input to prevent loading on the
>source. Also to prevent circuit action from being dependent on the source,
>otherwise the device will behave differently with every guitar.
>
>But these ARE guitar pedals we are talking about, and I have seen some
>designs that are completely laughable. They may have been profitable to
>sell, but they are still crap designs. There is just not that much you can
>do with one transistor and a 9 volt battery.
>
> >
> > If the fx box needs a high source impedance, why not put just a
> > resistor in series with the input?
> >
> > A transformer is much closer to a guitar pickup impedancewise.
> >
>
>


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