A very useful little sub. Have used it in a church environment to help re-enforce speech and music, and have benifited from the addition immensley. The inbuilt crossover is a very nice addition, and makes wiring up a sub/top pair much easier. Would reccomend placement on floor, even at its compact size, as it kicks out a fair bit of bass, but not too much to overpower the tops. Highly reccomended for small venues or spaces that just need a bit of low-end re-enforcement.