The Norman Laboratories 11's have (2) 1" tweeters and (1) 10" woofer each. These speakers are 20 years old and I think Norman Laboratories went out of business years ago. I bought them together with a Yamaha CR-440 (30 watts/channel) receiver from a HiFi shop in 1980.
I did have to reduce the output of the KSC-C1 to match the output of the 11's. The overload switches are getting flaky in the 11's, so I may be getting a loss of output in them.
Duane