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Critical subwoofer tip

I assume that everyone already knows the importance of phase matching a sub to the main speakers but it’s a little more complicated than simple 90 degrees or 180. The B&W sub that I have has four choices. In every case there has been a definite correct position that can be non standard. My current setup shined at 270 degrees vs the std positions. It’s completely obvious and the other choices would not have been satisfying. 
From my lengthy experience I would want a subwoofer with several phase choices. I personally don’t see how one could seamlessly integrate the mains and the sub without this flexibility. No one asked but i thought this info might be useful to anyone purchasing a subwoofer. YMMV
4425

Showing 2 responses by erik_squires

erik_squires
16,733 posts
 
Adding a sub perfectly to an existing system involves all of the challenges that crossover design has, with perhaps the only exception that you are involved in line level vs. speaker level settings. This is why I say it is far too much for the average audiophile, and best left to ARC systems like built into JL Audio subs or top notch digital preamps or integrateds like from Anthem.

Even if you do all the filtering right, the matter of the room remains.  To paraphrase the Bard:

Aye, and there is the rub, for in that room what sounds may come must give us pause and make cowards of us all.



Best,

Erik
erik_squires
16,733 posts
 
The OP reminds me why I have completely given up trying to help people get good bass in a room.  Subs are hard to configure.  Get a preamp or receiver with ARC if you get a sub.

Best,

E
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