Sub for a budget system. Open room

I have been putting together a system and come to the point where I am really missing the bass my old Sony LBT-GT5500 system had (2x 6" 120watts\channel) .

Currently own a Denon 1713 ($250 amazon price mistake), 2x Pioneer SP-FS52 LR($80 each Meijer Santa bucks via Amazon), and a Pioneer SP-C22 ($50 Best Buy MC deal) center channel. They really lack bass, but I enjoy the crisp sound. My living room is an open floor plan connected to the dinning room and kitchen. Layout is here. Living room is 18x16 in line with a 12x12 dinning room and a 12x12 kitchen. Living room has carpet other rooms have hard flooring. Viewing distnace is about 11 feet centered in the main living room.

I have been looking at the Dayton 1200 as it seems to be the best bang for the buck, I'm just wondering do I need to go 12" or would 10" or even 8" be okay? Listening to some of the 8" at Best Buy seem to make me wonder what is the point because I can hardly hear them.


I plan to add the matching rears, but I'm looking to get a sub first. Willing to look at subs that go up to $300 (can usually find these for half the price anyways), just unsure if I should go a single 12", 2x 10" for this long room.

Any good links on sub size vs. room size vs. listening distance? I don't need to fill the whole room with equal bass just the living room and I was under the impression I would be better off going with 2 smaller\cheaper subs to get balanced sound in this area and ignore the area behind me. I don't plan on listening to music\watching too much of the movie from the snack bar.

I'll check those subs, I just wish I could just hear them all first. I'm worried at my listening distance anything too big will just overpower the Pioneer towers.