Here's what the Ron at svs told me
You gave me all I need to know to recommend either the PB12-Plus or the 20-39PC-plus. Both have native tunes of 20hz, which will translate into very powerful, VERY linear response down to 16hz in a room like that, easy.
Of course if you decide you REALLY want to troll the depths, and aren’t planning a max output Rave party that night, drop in one port plug, flip the subsonic filter switch to 16hz for response pushing 10hz.
I’d run the native 20hz for max output myself. All modes will be very accurate and linear. This is the key to great blending with your mains. “Fast” bass is really just a euphemism for “lack of deep bass” truth be told. The SVS’s don’t create bass that wasn’t there. If it’s a kick drum or bass guitar attack in the 40-60hz range, that’s what you get. Nothing more, nothing less. The “fast bass” proponents forget that a sub has to do that AND the ultra low stuff on Master and Commander, or it’s just not a well rounded sub.
We make nothing but.
I’d say the PB12-Plus is perhaps going to be more practical but it depends on what you value, in that you can use it as an endtable, put stuff on it, hell STAND on it. The PC+ is much lighter, easier to move, takes up less space but you can’t put things on top. A PC+ can be carried by one guy, up an apartment stairs (just sling it on your shoulder). A PB12-Plus is a two man lift operation.
Hope that helps some? Either of these will just totally and I mean TOTALLY blow you away. Your old sub will find a new home quick.
Ron Stimpson
Director, SVS Sales and Marketing
rons@svsubwoofers.com
www.svsubwoofers.com
edit:Just realized that Ron is the co-founder of SVS. I sent him this email around 7-7:30ish I think and checked my email less then a half hour later and he had emailed me this back. Great customer service.