Everyone is gonna say you need two. Two are better. But one is better than zero if you can adjust the roll off and volume to 'barely there'. I had one single sub exactly where you describe in a Salamander three wide cabinet under the TV. Even had a door with acoustic panel in front of it and it worked fine. Good luck!
Subwoofer - is there one that would work in this situation?
My main speakers are the Janzsen Valentina P8s, which I love, they just lack a little low end punch. I'm thinking about adding a subwoofer but the only place I have for one is on the bottom shelf of the built in shelves below my TV.
Questions:
Given the location limitation is there a subwoofer that would work?
If so, Im thinking a small forward facing sub with DSP. Suggestions?
Thanks in advance....