Our subwoofer broke down and having just bought a large screen tv, needed to compliment the system, did not want to spend a lot of money and did not need more than a 100 watts, this was a bargain from JB HiFi, it is quite big and performs very well, to be honest we did not need anything more powerful, the speakers are of high quality, the sub is only for that deep bass, good buy.
Price and performance.
Size, a little big