Is Bass Non-Directional In A Two-Channel Rig?

An audible and visual floor to ceiling wall to wall sonic presentation. No holds barred and no apprehension of scale or contrast. The 3rd sub may add some weight but I cannot allow it to alter the time and phase coherency I currently have. I would have to blend a mono signal into this 3rd sub at a reduced level from the front pair so as not to disrupt the front stage visually. Tom

Richard Vandersteen and I were talking about this very topic, and he likes even more subs than 2....he likes 3 and even 4. The reason is you get a more even projection of the sound. Yes even with his 7's he gets better midrange and highs by using multiple subs.

Theaudiotweak - I wasn't thinking of adding a third sub as much as wondering if you had done the same experiment with a single sub in a different location to see what people perceived about the listening stage.

No I have never tried that. It would be mixed mono and not stereo and there would't be the close chance of aligning the voice coil of the mains and the subs. I have used a single sub of the same pair while I was doing a mod on its mate. The single playing sub was not moved and I could hear where it was placed even in mixed mono. I think at that time it was the Paradigm Servo 15 pair. They always have flanked the mains. Tom

I'd be interested to know if your test people that evaluated the soundstage difference would have different results using a single subwoofer. I suspect your ability to pinpoint the subwoofer is much better than even the above average Joe.