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

I've got one sub near side wall, plane is slightly behind me, and another next to one of my mains. Both crossed well below 80Hz they work very well and direction is unnoticable.

Try putting the sub in a corner...

"Try putting the sub in a corner..."

Only if you want to excite all the primary modes of the room.

Kal

You can hear where the bass originates even below 40 hz. Again the box/enclosure is a giant passive upward frequency generator. A 40 hz crossover point will not stop the box from being pressurized above that selected frequency. You will increase the sound stage image size by roughly thirty percent with the proper implementation of time aligned stereo subs. Ground the subs to the floor
Tom

Mitch4t,
Sorry, I just realized that I did not completely answer your question... Also yes, you can put a sub behind you. Back at Marcof Electronics seems like 300 years ago, we had our own sub design. We buit an 8, 10, 12 & 15 inch model.. At some time or another we had tried each of these sitting right behind us, Maybe 2 feet, while the speakers were about 8 feet in front of us. Once spl was matched, they all worked well, undetectable.