That series of loudspeakers came out in about 1985. I bought the D-9 version with the 15" sub driver at about that time. Specs will mean nothing, and CW has forever been stingy with providing parameters. Power is what you can give it until it sounds terrible...then give it a little less power. Frequency response is what it is. Expect musical output into the 30-something Hz area. It has a 10" sub driver, right?
The mid drivers are the weakest link in that series. Nothing more than $1.29 paper cones with about a half mm of Xmax. I will advise replacing those with something new that will fit, and you don't have to go very high in pricing. Just replacement OEM drivers would be better than the originals. You will note that one of the two mids is encased in a small plastic baffle and the other is open to the cabinet. If I were you, I would enclose both of them in a baffle and mount it inside the cabinet (it's okay that the tweeter is also in this small enclosure). Decide on airspace for these when you choose the replacements. Also, pull out the crossover and look it over for electolytic capacitors. Replace any that you find with the same value in a new poly or mylar cap.