Got my SX-240 off ebay a few months ago, joined this group to assist in fixing it up (files resources were VERY useful!). These boards are not common, but nobody seems to know how many were made. It might be interesting to start logging the serial numbers of the units that are owned by members here - might give a clue as to how many were manufactured (unless Kawai used a date-of-manufacture serialization scheme like Roland). Do the folks here want to start posting the S/N of their boards? Post any from SX-210, SX-240, SX-400 I'm away from home for the next few days, but I'll post mine when I get back home.
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Teisco/Kawai SX "Registry" - any interest?
2010-12-19 by kb_cheapmods