Yamaha DTXpress/DTXplorer/DTXtreme

Well, in most cases under-voltage shouldn't hurt the unit. MOst digital
just gets really squirrly with low voltage, but it doesnt overheat or
anything like that. It would explain the very low volume and the
distorted output you described. The things most digital circuits really
dont like is overvoltage and reversed polarity. Those are the type thing
that can kill a unit like the DTxpress.

I would be very careful to use exactly the correct polarity and MA rating
supply. You will need to supply some very stable and very well filtered
power since this is a sound-generator. IF you give it unfiltered or
poorly filtered power you might end up with buzzing in the audio.

The rating on my power supply is as follows:

12vdc 700ma positive tip.

I would suggest you get the real unit, but if you're really keen to start
playing the unit right away, they might have a replacement unit at Radio
Shack. Again, be *very* careful not to get the polarity backwards or to
exceed the 12v limit as this can cause an overheat and failure of the
unit.

Vern
-- 
Vern Graner CNE/CNA/SSE     | "If the network is down, then you're
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coachman6666 said:
> Hey.  The stupid place I ordered my dtxpress II from forgot to ship me
> a power supply.  So, I used my 6v power supply......  I think this is
> the reason for my problems (see above post by me).  Anyway, I took out
> the power supply and am now waiting for a new one.  Does anyone know if
> using a 6v adapter will short out or break the system?  Or will it just
> cause a low volume and shut off alot? cause thats what was
> happening.  I am not going to use the 6v anymore but I just want to
> know if it will have any long term problems from suing it.
>
> And if it is blown.....  then Ill just tell them the brain was shipped
> with the battery loose (which it was) and that I need a new brain :)
>
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