Bose Interaudio SA300 and an Advent model that looks to be 15 - 20 years old (no model # listed), both pairs for $18. They have 6.5" and 8" woofers respectively, both of which are rotted real bad and will need to be replaced. I would just like to make these speakers usable in my den so I won't have to worry about smoke damage from the fireplace happening to a nice set. Anyone have some easy drop in recommendations? The build quality seems decent and they are some heavy SOB's.