Towers: Bowers and Wilkins CM9 x2
Rear Bookshelfs: Bowers and Wilkins CM5 x2
Center: Bowers and Wilkins CM Centre 2
Sub: Bowers and Wilkins ASW610
I don't think I'm running heights or wides since I'm only using a 5.1 setup. The other channels/zones are being used yet. What's the difference between biamping and passive biamping?
Real biamping involves an active crossover between an amp and preamp vs passive crossovers found internally. This solves a ton of the problems with passive networks.
Passive biamping has some minor benefits, such as eliminating the interaction of the two networks at the amplifier and obviously, dedicated power for the woofer. In two way setups, this is pretty much useless, since tweeters generally only need a few watts anyways, in a three way setup, where the terminals are split between the mid/tweeter and the woofer networks, it might translate to slightly more headroom, since both midrange and mid bass, which are the most power hungry frequencies, have their own amplifier. Whether or not the extra amp is worth it is up for debate, and the extra power benefit can be obtained simply by using a more powerful amplifier.
If you have the extra amps in the avr that are going unused, you might as well biamp, but I wouldn’t sacrifice a channel pair (such as surround back or height) for the minor benefits of passive biamping.
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