inputs.text: watch avid customer support - subwoofers desirable even addicting greatly improve sound music also not without problehems first setup used balanced output apogee duet 2 audio interface connected mbp sbx10 bx8 speakers connected sbx10 recommended instructions sounded great no music playing noticeable whine coming bx8s subwoofer totally quiet whine not present duet connected directly bx8s without sbx10 suspect whine caused strange interaction duet 2 sbx10 contacted maudio support apogee support suggested ground loop problehem even though whine evident power duet coming usb connection mbp running batteries morning great effort would not believe rats nest cables deal setup speakers duet 2 external power supply not usually need use power strip whine still note not 60 cycle hum much higher frequencyfortunately found acceptable bypass connecting everything yamaha mixer configuration sound clean whistle able pc sound blaster card mbp via duet balanced cable old sony cd player tv running mixer side arrangehement playing cds cd player adjust volume mixer think better using built cd players pc mbp make mechanical noise require computers runningone last thing found desirable turn sbx10 sound watching normal tv programs news everything particularlyads back ground music previously unnoticed base becomes annoying amplified sbx10 watch movie hbo pbs use sbx10 adds dimension sound track not normal tv ads constantly yelling fortunately sbx10 foot peddle disconnects sound sbx10 allowing audio sent bx8swith regard maudio not impressed support gotten maudio owned avid registered sbx10 never received acknowledgment ehemail thehem furthermore found want get tech support thehem need avid support code asc happily sell sheesh pay warranty support supposedly register product get complimentary ascs acknowledgment ehemail course not receive ehemail yes checked gmail spam folder really annoyed registering 3rd time noticed support number call problehems registering called guy end said not even get ascs studio monitors omg pay contact tech support brand new rather expensive product warranty not call good customer service told guy problehem suggested might ground loop also promised send ehemail acknowledging registration course never arrived either calling today tell think tech support almost certainly never buy another avid product deduct one star lack support one whine problehem