Since 10 years have gone by and no one answered the question I will. This is from a Bass Player article in 2010:
"Ernie Ball Roundwounds on Jazz Basses, tapewound strings on the Earthwood, old flatwounds on the Kay and Hofner basses"
"Ernie Ball Roundwounds on Jazz Basses, tapewound strings on the Earthwood, old flatwounds on the Kay and Hofner basses"