Is the SVS PB17-Ultra R|Evolution sealed or ported?
Ported around a 17" driver, per its stated enclosure type. A ported design uses a tuned vent to play deeper and louder from the same amplifier — what movie soundtracks reward — at the cost of a steeper drop below the port's tuning frequency.
Computed from this product’s normalized, source-tracked fields — an unstated spec reads as “can’t check”, never as a yes or a no.
