speakers that rock

Used Legacy Focus 20/20s will do what you want if you can find them.

Paradigm Studio 100's. Excellent value for the money and they are excellent for rock music (I own the Studio 60's). Heck, they even LOOK like they can rock!

Vintage Altecs. From the Model 14s up to the Model 19s would rock your socks off. And can be had from about $400 up to $1500 for a nice pair.

Klipsch Chorus II are superb speakers that rock out. You get incredible dynamics and clarity like a live performance. They're extremely efficient (101db), so it doesn't take a big amp to drive a pair, and they are very forgiving with less than stellar gear. Klipsch Forte II are also superb speakers that rock (99db), and both of these floor standing models can be found on Audiogon used at very affordable prices (under $800)...

Klipsch Palladium P-39F sounded very dynamic and lively to these years. Demoed with
Rush,
Earth, Wind, Fire,
Pink Floyd

http://www.klipsch.com/palladium/Home.html

However, a little expensive. Another speaker I liked with similar tunes was Thiel CS3.7.