Emax

Hello everyone..

My emax seems to have a *slightly* different filter setting every eighth key played. When 
there is no filter applied it sounds as it should but when it's on or adjusted to a low setting 
it's very noticeable. I can live with this I guess but it worries me that there might be a deeper 
issue which can quickly turn into a costly repair. It's also a little annoying due to it sounding 
like a reversed note at times.

Might anyone know the cause or have a solution for a fix?

Thanks in advance!

--- In emax@yahoogroups.com, "amigauser24" <amigauser24@...> wrote:
> check the decoupling caps on the filter ic if one is drifting to the
rest and not tracking then it could be a caps failing if it is then
change all caps for the filter section as if one is going then all
could be check the voltages to the filter also 

if you have an oscilloscope then you can cross reference with the
other filters to see there function 

the other thing that could be the cause is the sample and hold
multiplexer 

have you performed a calibration of the filters to make them matched

jammie
 
> Hello everyone..
> 
> My emax seems to have a *slightly* different filter setting every
eighth key played. When 
> there is no filter applied it sounds as it should but when it's on
or adjusted to a low setting 
> it's very noticeable. I can live with this I guess but it worries me
that there might be a deeper 
> issue which can quickly turn into a costly repair. It's also a
little annoying due to it sounding 

> like a reversed note at times.
> 
> Might anyone know the cause or have a solution for a fix?
> 
> Thanks in advance!
>

There is a calibration mode and disk, maybe in the files section.
 
On the plus OS and maybe the others, I think it's master>Special(0) and then the number after the last option in that menu, so if the last menu option is 8, press 9.  Then you have to enter a code, which is EMAX in numbers like a telephone text, then you get into the calibration modes.  I've tuned my filters this way by ear, and as long as you don't have a a faulty filter chip you should be able to bring it back in line.
 
 
 



To: emax@yahoogroups.comFrom: amigauser24@...: Wed, 7 Jan 2009 17:15:54 +0000Subject: [emax] Filter tuning?



Hello everyone..My emax seems to have a *slightly* different filter setting every eighth key played. When there is no filter applied it sounds as it should but when it's on or adjusted to a low setting it's very noticeable. I can live with this I guess but it worries me that there might be a deeper issue which can quickly turn into a costly repair. It's also a little annoying due to it sounding like a reversed note at times.Might anyone know the cause or have a solution for a fix?Thanks in advance!  





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