Moderator: Captain Ned
SecretSquirrel wrote:I went a slightly different route. Rather than one big sub, I have a pair of dual 8" ported boxes, one on each side of the room.
While low frequencies are less directional than the higher ones, with a single sub, I still had issues with certain areas in the room.
Assuming size isn't an issue, I'd go with the PB12. The speakers you have as your mains already go pretty low and while taking some of the load off of them and transferring it to a sub will help keep faithful reproduction, if you are really after the gut punch bass in a movie, lower is better.
setaG_lliB wrote:If I set my main channels to cross at 60-70Hz, would that allow a single sub to fill the room more evenly? I'm hoping that I can take advantage of the large main speakers by having the sub play just the really deep notes, making it less directional.
The HSU sub can hit 16Hz with a 350w BASH. The PC12/PB12 can "only" manage 18Hz with a 400w Sledge. Am I right in thinking that both SVS models will sound cleaner at high volumes?
ludi wrote:AFAIK the best philosophy for subs is to let the mains roll of naturally and the sub should then be crossed to pick up below that. In other words, let the Klipsch units roll off naturally and experiment by initially crossing the sub a little above the 33Hz lower end of the mains, say around 40-45Hz.
I wouldn't sweat the difference between 16Hz and 18Hz -- almost nobody can actually hear below about 20-25Hz, and unless you're trying to accurately reproduce the chest-liquifying sensation of a pipe organ's bottom end, most power expended in that range is wasted. In fact, many sources will apply a fairly steep subsonic/rumble filter with a roll-off starting around 20Hz just to avoid accidental damage to higher-end equipment that might otherwise try to follow, say, a 0.5Hz warp in the vinyl.
UltimateImperative wrote:Late to the party, a possibility: a JTR captivator. A bit expensive, but probably louder than the 12-inchers you've been looking at. If you want power and low-end, you need a big box, no way around it. There are ways of getting crazy output out of a relatively small box, but the meaning "relatively small" is itself relative.
setaG_lliB wrote:Thanks for the reply. My center speaker only goes down to 57Hz, which is why I wanted to cross the sub at around 70Hz. But should I even be worrying about the center and rear channels? I remember reading somewhere that studios limit bass in the center and rear channels of a home theater audio mix.
ludi wrote:I've heard from a few hardcore audiophiles (one of them is a coworker with two systems worth about $15-20k combined) who are adamantly opposed to center channel speakers as being unnecessary, and likely to distort the soundfield with a box that is unavoidably small and inferior compared to the mains. These guys will only use Phantom Center mode. Even with middle-end equipment I've tried it both ways and tend to agree. Cheap HTIB systems cannot produce enough sound-stage to avoid a center channel speaker, but anyone with equipment in your price range should try it both ways before making a final decision. Provided the mains are correctly spaced and aimed (your room layout may or may not permit it), a correctly-perceived mono signal will automatically be "centered" by the human ears, which is what Phantom Center does.
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