Re: XB-2 updates

["Spence, Colin" <cspence@nelson.env.gov.bc.ca>]

>> I agree that that the perc harmonics are too much, even with the soft
>> setting.  Don't know if this is solved with the upgrade.  I remember 
hearing
>> about someone adjusting some pots to change the sound somehow, but can't
>> recall what the problem was that they were after...anyone recall that
>> posting from RMMS a few weeks ago?

>        I had posted something to this list about an internal adjustment,
>but it wasn't to fix the shrill perc harmonics.  You can ease the shrill
>perc harmonic problem a bit by turning the XB2 treble all the way down.
>This is a crude and marginal way to deal with the problem, but short of
>installing a filter cap of the right value somewhere inside, it's all ya 
can
>do I think.  This is a commonly complained about problem.  Joey DeFrancesco 

>also complained about high end shrillness on the XB2 in a KEYBOARD July 94
>blurb.

>        I have previously mentioned that I had slightly increased the MIN
>O.D. (minimum overdrive) pot on the XB2's internal circuit board which had
>the result of fattening up the overall tone a bit.  Goff showed me how to 
do
>this and it's very easy.  This caused four note chords in the midrange to
>distort very slightly, but I like that effect.  It's not clear to me 
whether
>this is exactly the same as leaving the overdrive wheel slightly on or if
>the MIN O.D. pot is at a different stage internal stage in the signal path
>and has a different effect.

Mark,

I turned my treble 'way down as well and that does seem to help, although it 
is crude and marginal as you noted.  Since the perc vol is adjustable to 2 
levels already via software, seems to me they ought to be able to add 
another level or two.  I may have to call them about another problem anyway, 
and will see if they have even looked into this.

Thanks for the info on the OD pot adjustment.  I use the OD a bit but find 
it a little awkward because of the way it cranks the volume at the same 
time.  I see the Keyboard XB2 review noted that problem as well...oh well!

Colin
cspence@nelson.env.gov.bc.ca