The PB13-Ultra has long been SVS's flagship subwoofer, and over the years, has often been mentioned as one of the ‘top dogs' of subwoofers. i.e., one of the best commercial subwoofers available.
Massive deep bass output; Extremely low distortion; Very nice finish and cabinet; Highly adjustable frequency response; Impervious to over-driving; Very good customer service
Very heavy; Enormous footprint; Mid bass dynamic range not as powerful as deep bass