re: New Subwoofer - Onkyo tx-nr676

I come from the extreme end, my current HT build will not be finished for maybe 10 months but will have 20 18" subs powered with over 28,000 watts, all of which will be hidden. So building my own is the only way to go, but I get most people aren't interested in DIY or AIY (assemble it yourself from kits).

You have a lot of volume to fill and pressurization is essentially impossible but you can certainly get bass to satisfy most casual AV folks.

SVS as mentioned is always a good choice. SVS among others are ID (internet direct) companies that excel in value for the dollar. Tom Vodhanel was part of starting SVS back in the 90's but has his own company Power Sound with Jim Farina. As a general rule I prefer PSA subs to SVS subs. I would recommend a ported sub for your room and would suggest either the PSA 15V or V1500 in your price range.

PSA ported subs

On the SVS side I would look at their outlet specials (I know lots of guys that get them and they are perfect unless stated otherwise). They have a couple of PB12plus subs for 999 currently.

SVS outlet

There are a TON of options but ID companies are the way to go for value for dollar and they outperform every major speaker manufacturer for the money. There are other ID companies as well but these are the two that best serve your price range. If you want to spend less just stick with SVS and pick the ported sub that best fits what you want to spend. (your budget is at the bottom end of PSA subs).

I am happy to answer any question about placement and will get as technical as you like.

One last thing I will mention is you might want to consider 2 $500 subs vs one $1000 sub, placing them in different areas of the room will produce a much flatter frequency response than one sub, however, most people prefer one despite the value of multiple subs in a room.