These look pretty light gauge, or he plays hard.
http://www.youtube.com/watch?v=HW3b50egxGw
Tom in the above YT vid says he uses Roto Swing Bass strings @ .45-.105
He seems to have done his research to a tee, but dont know if the size is personal choice or what Geddy used.

http://www.youtube.com/watch?v=HW3b50egxGw
Part of the Geddy wal tone is light gauge strings.
Tom in the above YT vid says he uses Roto Swing Bass strings @ .45-.105
He seems to have done his research to a tee, but dont know if the size is personal choice or what Geddy used.

