Thank you for your detailed opinion. It basically confirms what I already reluctantly realized when I compared Audioholics' measurements for my current SB-2000 and the PB-3000. A ported subwoofer, possible joined by a second one later, makes a lot more sense in my room and the PB-3000 seems to be the best long term option in europe. It's a shame that Rythmik, HSU, PSA or maybe even Monoprice are impossible to get for a reasonable price over here. It's my impression that they offer better value compared to SVS these days.Hi,
I would love to see you get a PB3000, with a potential second one in the future. With a room size of more than 6,000^3, the PB3000's would be a great option. The PB3000 has a pro-audio type driver, which is capable of producing a lot of mid-bass SPL. And, the tuning point is about 3dB lower than that of the PB2000. The port tune on the PB3000 is 18Hz, compared to about 21Hz for the PB2000. The lower port tune,combined with a larger cabinet volume, more powerful driver, and more amplifier power, makes a real difference in the new model's output. You are correct that a second identical sub adds +6dB more SPL, averaged across the subs' passband. But, look at the difference between the PB3000, and the PB2000, at every frequency.
SVS 3000 Series Subwoofer Measurements and Conclusion | Audioholics
SVS PB-2000 and SB-2000 Subwoofers Review | Audioholics
The reason I am comparing the PB3000 and the PB2000 is because of the cost difference in Europe. The PB2000 is much less expensive than the PB3000, while the PB3000 is much more powerful. You can also compare both ported models to the SB2000 you have now. The PB2000 is equivalent to more than 3 SB2000's at 25Hz, and is equal to about 4 SB2000's at 20Hz. (As I'm sure you realize, it's the low-frequencies where your current sub is really struggling the most.) The PB3000, on the other hand, is in a completely different class (compared to either 2000 model) at every frequency.
I sort of hate to advise you to spend the extra money for the PB3000, but If I were in your position, that is exactly what I would do. You have a very large room--about the same size as mine. And, I'm just not sure that you would be satisfied long-term if you upgrade to the PB2000 (or to a pair of them). Also, even though you aren't really very interested in the DSP that the PB3000 provides, I think that you may find that it offers you some additional user adjustability that Dirac doesn't offer.
The PB3000's are a lot more expensive in Europe than the PB2000's, but I think they are also a better long-term investment. Most of us require more than one try to get the subwoofage that we finally discover we want. Moving to a PB3000 now, with a second one to follow later, might help to shortcut that process for you. I hope this helps a little!
Obviously I'd like to spend as little as necessary, but at the end of the day the desired outcome/result dictates the budget, not the other way around. So, PB-3000 it is! And your reply makes that decision a whole lot easier. Thanks!