Should I keep my JBL 150A's?


I want to put a Home Theater together in my new rec room. The area is large enough (20x30 feet) to support a large Big Screen and a 5.1,6.1, or 7.1 surround system.

My delema. Should I start from scratch or should I anchor the system with my JBL L150A's? These are from 1980. They're large 3-way towers with a 12" woofer and base passive radiator. They're rated to handle 300W. I drove them in college (early 80's) with a Yamaha M4/C4. I hooked them up with my M4/C4 after a 10 year break. They are unbelievable. The walnut cabinets aren't bad to look at either. The only knock if you could call it is they seem to want to be played loud where imaging and detail improve as volume goes up.

If you wanted to keep the 150's, what would be a good compliment for a Center Channel, surrounds, and subwoofer?

Is a subwoofer really needed if I have the 150's? (My wife is already complaining that the floors are shaking). Oh yeh, I broke a window in my parents house with one too.
sempaul
Sure, give the L150A a try in Home Theatre. For a center channel seek an L112 or 4411 (the 4411 is the studio monitor version of the L112 and is made to sit upon it's side). For the rear in a 5.1 set up, seek a pair of L112s or L96s. For LFE (subs), the market is full of good options, but I've no recommendations here. Good luck!
It seems like yesterday, I was just out of high school and plopped down $3,000 for a new stereo. People told me I was nuts for spending that much money. Now 40 years later, my friends and family are in awe of the sound. The Yamaha M2 amp, JBL L150 (channel 1), JBL L50 (channel 2), and Yamaha YP-D8 turntable are still producing outstanding sound. 
Don’t ever let people convince you that buying quality is not worth the price. The way I figure, that comes to a dollar and a half a week for the best sound I could’ve ever gotten. I easily get my 21¢ per day in enjoyment. Cheaper equipment would have ended up in the landfill by now. 
As for rattling floors, my JBLs are sitting in the basement rec room with 8” of cement under them. If I can crack the foundation, that would be something to brag about.