I have a pair of good Klipsch towers (they're about 5 years old and I can't remember the model number off the top of my head.) Very solid, very pleasing performance. Their low-end is good, but a sub would complete them nicely.
From a separate system, I also have a relatively lame Advent powered sub. Certainly nothing great.
Would it be a mistake to pair this mediocre sub with the towers? What's your thought?
1. Don't do it... it'll only hurt. A $1000 pair of Klipschs with a $150 sub? What are you thinking man?!?
2. For subsidizing the bass output (instead of providing all of it) it would probably work nicely...it could fill out the bottom end, and extend the overall frequency response of the system.