Prima Bass additional - with suitable NF decoupler

I regret to have done so not many years ago: This subwoofer is truly an ideal complement! Only now I hear in the car, that I know for years only from the subwoofer to the home facility ago. Of course, it brings cable tinkering with it, because of the recommended additional security. But his efforts have paid off and he has actually enough power ... to enjoy music sufficiently loud and undistorted - is indeed intended as a spectral Lückenvervollständiger and not to attract attention from 30m away ...
Anyway, I am very satisfied want, even though I had only times unexpected problems with ground loops (own swinging a ripple frequency from gain adjustment> 60%, or not switched independently from).
Remedy by NF noise filter, which I had only tasted the HAMA Filter: humming away, but several gaps in the bass range. Finally, I put a ten on it and that has paid off: The Ground Loop Isolator Eq-205 is significantly bessr and I can subjectively hear no more burglaries (!). Connection was made directly by the way - via shielded lines - on the amplifier line-out, so do not to the loudspeaker outputs.