Hello all. Many of you know that after many many threads and questions about subs that I have finally settled on the PB12-NSD. And settling really isn't the correct term. After my first weekend with it and a few movies, I can safely say that I am very happy with my purchase. This is the first time I have heard bass like this. Now with that said, a lot of us are always looking for more and I am no exception. I already planned to add a second sub a little later. I initially just wanted to add another PB12-NSD, which would probably be enough anyway. But I was wondering if I can match the PB12 NSD/2 with it? It has the same drivers so I would assume the sound would be the same, just more output right?