Hi Hartmut,

You're right, there is three types of pots: linear, logarithmic and so on:
http://en.wikipedia.org/wiki/Potentiometer
It seems you have used the wrong type (it seems to be a linear according to your
description of the problem, but most of the time in these type of circuitry a
logarithmic is required), you have to use exactly the same type of pot with the
same caracteristics because Fodera guys designed your preamp according to them
to produce the right sounding.

I hope this helps.

Peace,
Thomas



----- Message d'origine ----
De : Hartmut Hillmann <hartmut@...>
À : foderabassguitars@yahoogroups.com
Envoyé le : Mardi, 15 Avril 2008, 11h38mn 57s
Objet : [Fodera Bass Guitars] Blend pot problem

Are there any electronics gurus in here? I just replaced all pots in my 1998
Fodera Imperial
six string. It was made passive, but they had a printed circuit board with
soldered on pots in
it and the pickups were attached with little plugs. I replaced the circuit board
and soldered
everything exactly in the same way with new pots.

The blend pot gives a lot of output if completly in either bridge or neck
position, in the
center position the (formerly equally mixed) signal is very weak.

I tried a suggestion found in the talk bass forum: reversing in and output of
the blend pot -
without success: same problem.

Anyone got an idea? Maybe it has something to do with audio(logarithmic) or
linear behavoiur
of the blend pot? I don't know what it is. I ordered it at guitarelectronics.
com. It's a 500k pot,
like the old one.

TIA Hartmut






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