There are a number of good and inexpensive subwoofers available. Paradigm is certainly a good brand (I use Paradigm Reference speakers myself, in fact), and they have several different models of bookshelf and center channel speakers that would potentially suit your needs very well when the time comes to make that purchase. Many 1050 owners have had good luck using Boston Acoustics speakers and subs. Energy may also be worth looking at, or Klipsh or Polk . For subwoofers alone, several of us are using SVS subs, but they'll cost more than the PDR-10 and they are very large -- their littlest sub currently is a cylinder 16" in diameter and 31" tall, and an upcoming box sub will measure 20"x18"x20" and sell for $600.

You should have no problem keeping the AM4 and using a subwoofer. You can treat the AM4 as a regular speaker and set the mains and center to small, then set a crossover that works best (probably around 80Hz, but you may want to tinker with that a bit).

Starting out with the Bose cubes, you may want to look at bookshelves mainly -- which is not a problem since you'll have a sub to handle the bottom end. I'd strongly recommend going out and listening to different speakers, and taking some of your own CD's with you as demo material. What to look for depends somewhat on your budget. For something in a similar price range as Acoustimass stuff, you could look at Paradigm, Boston Acoustics, Energy, Polk, and I think Klipsh, to name a few (others feel free to chime in! ). As the budget rises, some brands like B&W become possibilities, but I'd probably start with the first list.

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gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review

Divas', Rockets' ....

with what gonk has said as far as subwofers go, i would have to say that you can get a nice b&w sub for about 100-200 bucks more than paradigm sub, but i would say that there is definatly more than a $200 improvment. when i went looking for a subwoofer, i looked at the paradigm 12 (pdr-12 i think)which cost a litle over $400, and the b&w asw-650, and the asw-600. i picked the asw-650, which was on sale for about $600, but even the asw-600 which was copnsiderably less, sounded much better than the paradigm

Amazed @ how noone likes or recommends DefTech subs

I had a PF15TL+ for 2 years and would highly recommend it. I dont even remember prices of other subs so maybe its price of 700.00 doesn't fit in here.

I went ahead and sold the TL+ to a friend and picked up a SuperCube I about 3 weeks ago. Very Very impressed. But I had better be for $1,200.00.

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Play it LoUd!!