Thanks guys,
It looks like Scott answered this question. He says they have lowered it by 3 db. That shouldn't be an issue if as Charlie says, "You run out of Amp before you run out of knob." It might depend on the amp though, like some ultra high wattage pro amps or Crowns, or how about the Sampson 1000 that SVS uses? I am curious to know though if this is one component of the hiss fix.