If I'm thinking of the correct ones I may not have payed that much attention to the L5's.The L3 was a bookshelf 2 way with JBL's titanium tweeter. The L7 was like the L5 with a extra woofer somewhere,side maybe.Those both sounded pretty decent back then.I heard them in a chain store called Silo or something like that.They're one of the few metal tweeters that I could get along with.The 3&5 both sounded ok from what I remember.3 was small,7 was about 4' tall? the L5 was a little smaller than the L7.The L5 might have had all the drivers top of front angled a little too.The were transparent and fairly neutral.Nice and open from what I could remember.I would like to hear them again,and would probably still say not bad.I'm guessing the L5 was similar minus the one extra side woofer?I hope you get to hear them first.I imagine they have some weight because they are sort of towers.All black series too. They may have drivers similar to their monitors except for the woofer/woofers.