I got a pair of Altec 1204B from a friend. I was wanting to replace the woofers. It takes a 15" woofer. I was thinking about putting some 15" Cerwin-Vega woofers in them. Is Cerwin-Vega a good speaker? I was wanting woofers with lots of bass. What kind of woofers would I get the best bass out of? Any brand except for Bose.