Have this subwoofer to a Mac Audio ZX 2000 Black Edition connected. The power ranges from all times. Have the Subwoofer installed in my Peugeot 206 3-door. Even with minimal bass intensity wiggle Ausenspiegel. The end Level I bolted to the back of the box. The only downside is the lack of space in the trunk to But I would like to sacrifice again and again. The Delivery took place as usual quickly from Amazon. (2 days after ordering) The original packaging was also in a larger cardboard packed. Instructions lies with. Again and again like. More than enough performance for very little money. -> Quite strong buy recommendation!