Dear @lukaszwk : The integration of a self powered subwoofer through a HP filter is not " plug and play "
All of us are accustom to many/some system noise and distortions levels and we like what we are listenning in each one of us home audio system and when the subs are well integrated ( using the subs software for that room integration, precise phase selector choosed, volume level, position and the like ) certainly that inmmediatly the the recordings ( dgital/analog ) through system play could sounds like a " crap " because we are missin " loosing " those noise/distortions that we were accustom too and that in the NEW SYSTEM already disappears or gone really lower and everything in the NEW system is different to our ears but if we made it all in good fashion and with care and patience the rewards are to many.
We have to take in count that in the NEW system with way lower noise/distortions there is no place to quality " problems " in the different system links to hide its real performance and then we have to " fine tuning " the whole system each system link: preamp/linestage, amp, IC cables, electrical power lines, speaker position, even our seat positon, check the new " vibrations " that develops the good subs and many other things.
As I said not " plug and play " and we need to accustom to the new better quality sound that now our system puts us narer to the recording and nearer to the MUSIC to enjoy that MUSIC as never before and of course that we have to hve some track recordings that we know as each finger of our hands to make the tests for that NEW system quality performance levels and that lower noise/distortion home room system levels.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

