[sdiy] reamp?

[harry]

LOL....

MY horror story was a guy who had a 'preamp' in his guitar... that always got
radio stations. Well the design was all wrong (so wrong I don't even remember
quite how wrong... like an opamp on a single supply with no bias at all....)

I fixed it... good sound... no radio....  and he bitched that it didn't sound the same.

Maybe I should have installed a big cap... maybe 500uF at 20KV....   ;^P

H^) harry

patchell wrote:

>     This reminds me of one of the worst experiences of my life.  I used to repair
> music gear.  I recieved a Fender Guitar amp that was broken to fix.  It had several
> problems, all of them pretty minor.  One of the things I noticed while fixing it
> was that the 1/4 inch jack on the input was pretty badly corroded.  I replaced it
> with a nice new shiny switchcraft jack.  The whole thing worked great when I was
> done.  The mf refused to pay!  Why?  Because I destroyed the sound of his
> amp...seems he would put the jack from his guitar in just so, and it would sound
> "real cool".  Not any more....this is one of the reasons I won't repair anything
> for anybody anymore.
>
> Grant Richter wrote:
>
> > OK, I stand corrected. It is after all, the end result that counts.
> >
> > I knew a guitar player named Pedar Hedman who played under the name of "Lord
> > Fuzzy". He would take his guitar cords, chop them to pieces and splice them
> > back together with masking tape. When I asked him why he did that, he
> > replied "Because it sounds fuzzier that way". And it did.
> >
> > Believe me, I have no wish to rain on any ones parade ;^)
> >
> > > From: "Happy Harry" <paia2720 at hotmail.com>
> > > Reply-To: harrybissell at prodigy.net
> > > Date: Fri, 24 Aug 2001 20:12:32 +0000
> > > To: grichter at asapnet.net, owner-synth-diy at dropmix.xs4all.nl, debus at cityweb.de
> > > Cc: synth-diy at dropmix.xs4all.nl
> > > Subject: Re: [sdiy] reamp?
> > >
> > > 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.
> > >>>
> > >>
> > >>
> > >
> > >
> > > _________________________________________________________________
> > > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
> > >
> > >
>
> --
>  -Jim
> ------------------------------------------------
> * Visit:http://www.silcom.com/~patchell/
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> *I'm sure glad Merry Christmas comes just once a year
> * -Yogi Yorgensen
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