I'm lucky to have found these. I just got the replacement foam rings for the tweeters, that'll make them look a bit nicer. The grill cloth on the blue set look like they were red at one time (I can see the red on the inside of the grill frame) but either someone went over them with dark spray or they faded to the blash-ish color they are now. I'm keeping the blue set for sure, will use them when we watch movies outside, so I might replace the cloth to red at some point. Blue cabs with red grills......unconventional for sure.
I like that JBL was experimenting with different materials and design. Due to the rarity of these they were likely not a hot seller. But they sure do make good sounding speakers. Just about anything from JBL of the 70's and 80's era will sound great.