Korg Poly800/EX800 Users

Neil:
 
> The manual states:
>   a.. Be sure to use only the recommended KORG 9V AC adapter (rated
> at 300 mA). Other types of adapters may cause malfunctions and can
> even damage the Poly-800.

There is a lot of leeway in low-voltage DC applications.  Probably
anything from 7.5 to 12 volts would work, although you want to get
the voltage as close as possible, especially in high-current
situations.  I have a Korg 9V 300ma adaptor that came with my midi
pedalboard, and guess what?  It's putting out 11 volts!  Go figure.

>   b.. Make sure that you are using the correct KORG adapter for
> your local line voltage. Unusually high or low line voltage can
> also cause malfunctions.

Meaning don't plug a 110v adaptor into a 220v socket!  The reverse
is also true.

> From your experience, it seems that adapters with other voltages
> work, though I thought I'd be safe with a 9V 300mA adapter. But
> apparently polarity is an issue too...

Polarity of the adaptor is up to the manufacturer.  Some choose 
center negative, others center positive.  Any good aftermarket 
adaptor should be configurable to either setup.

- Dave
garyisanidiot@...

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