I bought "800 Nightline Pro" amplifier the boxes with. Hung from a mobile phone and thought to myself, how some people can be so only do a crash. Because I got so expected, I got me the "Behringer XENYX 802" mixer to be ordered, since I can adjust the bass / treble / bass etc. Lo and behold, there even comes out something nice. So for the price and with the right mixer, the boxing class, if someday the portrait or woofer then should die (common in cheap Laustprechern), then replacement costs no world.
CONCLUSION: Boxes with good mixer huii, boxes without desk PFUII!