And if the calibration does not do the trick, find out which voice is
the bad one (in Display Active Voice mode described below), then swap
the CEM chips around and see if the problem moves to another voice.
The problem could be a bad CEM chip or something else (and much
cheaper) that drives the CEM. The voices are counted from right to
left IIRC (check out my page
http://wolzow.mindworks.ee/analog/m1k-firmware.htm to be sure). If the
bad voice moves, you are in trouble. But not in a too deep one :) If
it doesn't then it's much more complicated to figure out, but will
cost you less.

Regards,
Margus

On Fri, Feb 6, 2009 at 8:16 PM, narfman96 < narfman96@... > wrote:
> Congratulations on your new purchase!
> There is a self calibration and voice test mode in the Matrix1000. This
> is explained on page 39 in the manual. Select Ext. Funct. #7 and press
> enter. Test 0 will run the auto calibration routine. The display will
> show CAL and it takes a few seconds to run. This will calibrate the
> oscillators, filters, and VCA's. Test 1 will show the voice that is
> triggered. If you have a bad CEM3396 voice chip you will hear the
> difference. One of mine had bit of noise for the attack portion of the
> envelope when all the other 5 voices sounded fine. Then you can replace
> the bad chip. I bought several from: www.maad.net/ms6/index.html
> They were $18 US each or 6 for $90.00.
>
> Let us know what you find, Fran
>
> --- In oberheim@yahoogroups.com , "resistenzaaoltranza"
>
> <resistenzaaoltranza@...> wrote:
>>
>> Hello, there! I am a new proud Matrix1000 owner. Testing all the
>> voices I felt something was wrong: pressing the same note six times, I
>> hear the last behaving strange, sounding less full, flat...This
>> happens each six notes played. Maybe one of the Cems has gone Battery
>> low Even resonance sounds too "raw" and irregular to my ears...Any
>> help or suggestion is highly appreciated, thanks!
>>
>
>