I was with my Car-Hifi dealer the other day and I showed him what I’ve got up to now (Audio System F2-450 and the CX12 SUB in the 75l bandpass case), I thought that would be something neat, but he totally pulled off that never has 700 watts, and that that would be at least 1 ohm (but stands with 4 ohms on the HP) and that that would be a subsidiary of Lightning Audio… But I think he confused that with Sinus Live, can that be? He wanted to tell me that this Blackmaxx for the audio system….. Greeting Tim Here is a test report from the HP for the woofer: http://www.audio-system.de/pics_audio/Test_Audio_System_CX12.pdf for the amplifier there is no test report, but the other models have almost all won something.