"Robert Morein" wrote in message
...

"Tim Breen" wrote in message
...
Hi all,

Small room, nearly 12' square w/11' cathedral ceiling. 5.1 system
w/150W powered sub currently placed in the right rear corner, firing
down onto a wood floor.

I am bothered by the directionality of the sub (it's right behind me)
and am wondering if buying an identical unit and placing it in the
left rear corner would improve things enough to justify the cost.

What say you?

Also, can I just use a Y-splitter coming off the AVR to feed both
subs, or do I have to put them in a series?

Thanks!

Localization of a subwoofer can be caused by the following phenomena:

1. The subwoofer is crossed over at a high frequency. Above 60 Hz, the ear
can frequently localize a sub.

Funny everybody else says 80 Hz.

2. Articles in the room, furniture, walls, etc., resonate with the sub,
generating sounds at higher frequencies that are easily localizable.
3. The crossover leaks higher frequencies to the sub, or the sub has
significant harmonic distortion.

The term "subwoofer" has been corrupted by use from the original meaning.
Originally, a subwoofer was specifically a low frequency driver intended
to
compliment full range speakers. Some of these subs are crossed over at
very
low frequencies. For example, my sub is crossed over at 35 Hz, to
compliment
Kef Reference III full range speakers. At very low crossover frequencies,
subwoofer sound cannot be localized, except by telltales provided by
vibrating panels and room furnishings.

However, with the advent of the "satellite-sub" system, the so-called
subwoofer became just another bass driver. These drivers are crossed over
at
much higher frequencies, sometimes as high as 120 Hz. When this is done,
the physics of sound makes localization inevitable.

If your subwoofer is crossed over at a high frequency, it is possible that
you will find more satisfaction with an additional, symmetrically placed
sub. However, since such subs actually support the midrange, placement
close
to the satellites is more apt to provide the coherence you feel is
missing.