To "upgrade" my something in the tooths surround system I bought these sub - and because my old magnate simply had a little bit "Bums". The hype makes it better to two classes and is perfectly adequate. It brings clean, dry deep bass at just the right volume - is therefore for my purposes actually perfect. Yes - actually. Unfortunately, this can only succeed with full utilization of capacity. A 20 - increased 30 RMS watts output stage would be desirable, so you - especially in "early music" - a little could admit resp. the amplifier does not have to constantly run at peak performance. I also have some doubts about whether it actually achieves its 120 watts RMS. However, if you only listen to or digital movies in Dolby Surround View (-Hear) want: the "Bums" is perfectly adequate for it - sometimes even oversized, so you have to turn back to Poti. All in all for the price a great sub in a good and clean processing. Pitch must of course be present.
After one week, I have to revise apologetically recommended without restriction. Power is now more than sufficient. For linear tone controls I need just a little more than half the amplifier power of a sub-bass to have dry ends. I therefore change my judgment on 5 stars.