I took delivery of my SVS SB13 Ultra last week. Never owned an SVS product before, but felt i had nothing to lose as they have an attractive no-risk demo offer.
The finish and build of this sub is quality,weight is impressive. With the grill off, it's one of the most attractive subwoofers i've seen in a loooong time. the piano gloss is very classy. With that said, the protective grill is horrendous. I will say functionally, the grill is class leading as it would probably stop a bowling ball, but hands down easily on of the most obtrusive grills i've seen.
the performance seems "as adversited" or maybe even a bit better. So far i'm a believer, but i need more time to give an honest, conclusive review. Very impressed with how this sub sounds with music specifically METAL! and it's aggressive drums & double bass pedals. One of my go-to double-bass pedal drum tracks is by AS I LAY DYING, entitled "Upside Down Kingdom" and the SB-13 Ultra ate the track up and spit it out at reference quality. Excited to get to know this ins and out of this subwoofer.