....The CSi3 has a wood veneer finish versus a vinyl finish on the CS1. Also the tweeters are different as is the port design.
The CS1 is the perfect match for the Monitor 30. They both have the exact same tweeter and even the exact same mid/bass driver for excellent sound voice matching. The cabinet finish also matches.
The CSi3 is a match for Polk's RTi monitor speakers.
RR6
What is the difference between these two speakers. The CS1 is less expensive and smaller. The CSi3 is larger with more wattage. Here is two links for each speaker. I want to match my polk monitor 30 bookshelf speakers. cs1:
http://www.crutchfield.com/S-ACYKOhpsxX3/cgi-bin/ProdView.asp?g=12100&tab=essential_info&i=107CS1B#Tab
csi3:
http://www.crutchfield.com/S-ACYKOhpsxX3/cgi-bin/ProdView.asp?g=12100&tab=essential_info&i=107CSI3B#Tab
Any info would greatly help

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic