Hi all
I hope I in the proper forum .
I want to build a similar preamp like this one :
http://www.caesound.net/cb2.aspx
Can you offer a relevant similar schematic as such ?
Elico
You will find out that for really hard strums a single 9Vdc battery
supply is NOT enough! Either use two, or add a DC-DC converter stage.
With the preamp right at the guitar, you'll miss the 'peaky'
resonances some guitar players like. But, you could probably add a
switch in cap to duplicate the ong run cable capacitance
From designing guitar preamps around 30 years ago, TI makes a great
preamp chip very linear, 3-4nV/rtHz input noise and can run off +/-
9Vdc batteries. They probably make much better chips now. Don't be
misled in your search just because an amp can go rail to rail doesn't
mean that it's working very well when it does that. I've usually had
to stay over 2.7+ V away from each rail to keep distortion below 1%.
Inspection of your link shows an EXTREMELY simple amp, you could
pretty much copy it if you wanted to.