Hello, I have a JBL scs 145.5 5.1 surround system that I originally paid about $350.00 for. The sub woofer is now making a squeal type sound, and I've been advised that it's probably not worth repairing. ( repair cost being more than it's probably worth). I really have been happy with this low priced JBL system. What would you recomend for a replacement sub for hopefully $100-$150 that would be campatable with whats left of the JBL system, and would be similar in performance to the 100 watt, 8" jbl sub that is dying?