Budget Subwoofer?

".... It's a 19 x 11 room and it's for a stereo, not a home theater system. We listen to mostly rock of various sorts, R & B, some jazz, and a lot of acoustic music."

For $300 or less, if I were you, I'd keep it 10" or below.

* Do you have any good samples on instruments/acoustic that I could look it up on YouTube.com?... I like something that could put me into sleep.

"...I like something that could put me into sleep"

* I like something that could put PEOPLE into sleep.

The older NHT SW2 and SW3 are very musical subs that might be found for under $300. These were sold with their own detached amplifier as they were passive subs. So please keep that in mind when pricing them.

Do an online search. I guess this is a cracking good cheapy sub based on WhatHIFI magazine.