one other option is just get a small 8" sub, dont spend a lot of money on it, but that way you will get somthing to fill in the low's on movies, and it wont be to terribly loud, or you could turn the gains down, i have an ep600 and i live in a 100 square foot room(military), with a roomate right next door, i turned the gains down on my sub, i can still hear the low frequency's but sense they are not real loud they do not bother my roomate, so we both get the best of both worlds..