I sold my SV 16-46 PCi, and bought an SV PB12-ISD/2. Both of them are very good subwoofers, but the PB12-ISD/2’s rear firing ports can be a problem. If your placement options are flexible you should have no problems. If you need to place the rear of the sub close to a wall, (within twenty inches), you could have “room gain” issues. If I were looking at another sub I would try to find something I liked, or two of them, that didn’t have rear firing ports.