After spending a fortune on equipment and music my spouse balked at the idea of spending more big bucks on room tunes, etc. So after checking out the various room tuning stuff at the local high end dealers to see what the stuff was and how it was placed, I went to Lowes and bought some cheap cardboard circular forms normally used for concrete in various diameters (dirt cheap!) and then went buy the dollar store to buy various sound absorption materials like sponges and the like. I then picked up 100 pounds of clean sand and grabbed some of the tubes used to separate golf clubs from my golf bag, cut them down to about 4 inches lower than the desired height of each specific tube and built my own.
After cutting the cardboard to the length desired, cement the bottom to a wooden circular piece of wood that's about 1.5 inches thick and larger in diameter than your selected cardboard tube.
After it dries, wrap the outside edge of the inside of the tube with sheets of sponge-like material that reaches from top to bottom, cementing it to the cardboard. Then fill the bottom of the cardboard with a few inches of sand. In the middle of the tube stick your golf tube in solidly and fill it with sand. Then throw all your damping materials around the inside of the tube until it's nearly fill. Then pour more sand on the top and let it seep down in between your damping material and then add an inch or two to the top of it until the tube is full. Cement a second circle of wood that's identical to the one on the bottom, (add some material from your local fabric shop that will match your decor around the tube) and viola! You have an killer room dampener. You might want to stain the circular cuts of wood to match the material you've selected for the tube.
Anyway, I did this with several different pairs of lengths and diameters, set them up the way the local high end stores presented the pro stuff and listened, making adjustments in placements as I went along. When I finally found the best combinations, my friend who has invested thousands in this stuff brought his pro stuff over and we "a-b'ed" everything. My home made stuff turned out to be every bit as good as his and he went home swearing about high end rip offs.
(I also went and bought bed padding that is foam and egg-crate shaped that folks who are bed ridden use to avoid developing bed sores. My local department store had everything I needed. I then stapled the pieces to sheets of plywood cut down to the sizes I wanted and added them to the mix to approximate what room tunes did. Bingo! An even greater overall improvement at very little additional cost.
You can do this for very little jack. Why pay a bunch of money for a name? Besides, you're friends will love and respect you that much more when they "hear" how you improved your sound without taking out yet another mortgage on your home! ;)