Does anybody know the science between the too set-up options? I would hazard a guess the DD5.1 system is designed to redirect the bass from a DD5.1 source to the Beolab2 if SUBWOOFER is set to YES. But an audio system connected to the TV does not have the same effect resulting in bass to all speakers. ?? Anybody confirm?

wtlc2zpx: It is not about the system that is used in broadcasting, it is about the system that is in your TV. If your TV has a subwoofer output... use it yes but thats the point, if i do I get a resonating bass from the 8000's and lab2 requiring turning down the bass settings.

That what I would have thought but in testing it doesn't sound that way.

Are the low frequencies filtered by the Lab 2 before reaching an attached pair of speakers? And IMHO if all speakers and sub are connected to the TV then the front speakers do not have reduced low frequency.

The Lab2 instructions show to connect all 5 speakers to the TV for a Dolby Digital System but for a Dolby Pro- Logic system to connect the front speakers to the Lab2? Which is right? My TV broadcasts in Dolby Pro-Logic most of the time, but the DVD plays in Dolby Digital??? Also my Beosound 4 is connected the the TV, so again would that favour the Dolby

As I type the spellchecker tries to correct my English with English(American), where do I correct this preference?

(edit: deleted by britops, started a new topic)

No I have separate powerlinks for each speaker and sub from the back of the Avant. Thank for the advice I will try what you say. Can anyone else confirm the filter?

Q. What's his favourite B&O product?

Q. Does he love or hate Marmite ?