Lexicon Jamman memory?

["jj 179" <jj179subs@hotmail.com>]

Hey gang,

I just picked up a used Lexicon Jamman with the original 8 seconds. Is the 
memory still available somewhere to upgrade it to 32 seconds? Can anybody 
point me to what specific kind of memory chips it uses, and/or some places 
to buy them? Any estimates of how much that would cost nowadays?

thanks!!