My theater is designed to be portable. Da-Lite fast-fold rear projection screen, projector that slides into a removable ceiling mount that I made and some black curtains to fill the voids on either side of the garage opening (door is 18' wide, screen is 6' x 9').
I have been using a pair of JBL bookshelf speakers that I bought used freshman year in college...let's just say I've had them a long time!
This weekend, I bit the bullet and grabbed a pair of Peavey PR12s, and stands. OMG. Not sure why I waited so long.
Last year, I picked up a "broken" Denon surround sound receiver and n Electro-Voice PR2600SA amp...both free and both work very well together. Now they're driving the PR12s and I couldn't be happier! Well, maybe if I had a second power amp and a Peavey Sub...I have an old Flame Linear amp...Hmmm.