A really chic subwoofer, fits very well with my Canton Crono 705 `he standing speakers, 505` he Center and JBL Control One. The performance is absolutely sufficient. Operate the sub to a VSX 920` it. Pioneer Adjusts already have to take time. Very handy when the receiver has a built Einmesscomputer - most modern receivers have something in it. Nevertheless, it takes a bit time to be the "right" Installation and adjustment "has (phase, crossover frequency and volume) found and because I still have to experiment a bit. What I found out for my pit until now, is the cut-off frequency at about 65 Hz. The bass is very very deep down ... You also have to say it does not meet the Sub simply add questions and the Einmesscomputer does it matter. This sub is a Frontfire unit, the bass reflex tube is on the bottom, processing blameless. I got the Blue Ray Avatar the first 10 min run for the first sound impression to landing the Zubringershuttels on Pandora ... it rummst really well I know that it goes even better with time, and -. that everyone should already heed - the Sub not just in one corner (horn effect) or stand so, then that is and rely already on the Einmesscomputer. Sure, the deep sub audio tone can not locate it, right, but you know I hope everyone, even when you install the loudspeakers can be error do. Each room is different (size, furniture etc). If you heed some simple rules, you have a great sound as a reward. I'm already excited. Full Fat 5 stars !!