Originally Posted by Blake2163
Thank you guys for the replies ! Sorry I was pre occupied while posting earlier and should have included a few things I didn’t.
My primary use will be HT. Some music. I have done extensive reading on the subject trying to gather my on conclusion on what would fit me best. Unfortunately the has proven to be harder than expected due to everyone’s individual opinions on what works best for given scenarios.
The out going subs are slot ported 12” subs. They have no real tactile response what so ever. I enjoyed the pb2000 enough that I would have kept it and purchased a second had they not released the pro. I sent it back wanting to get the pro for the new design and added PEQ. The only issues I really had with the pb2k was some extra tactile response would be great because it didn’t come through much but the few times it does definitely bring a smile. The only other real complaint was a low end lingering boom the stay too long and tended to be a little over bearing on certain material and on certain types of music that I enjoy such as DMB and some of John Mayer’s older music would get over blown. Maybe some EQ or just turning it down a notch would have cured the problem. I do have a umik1 and got things as smooth as I could for the time. Maybe it was clarity I was looking for ?
I don’t have room for anything as large as pb4k which is why I have come to the choices of sb4k thinking that 2 of those considering bigger driver and more than twice the power and with room gain involved would match or exceed 2 pb2k. The second choice is 2 Pb3k’s as a kind of meet in the middle compromise as the only add about 1” to the depth. The pb3k’s will just be a little more limited on placement than the sb4k’s would. Whatever I choose will be duals.
Do the sealed 4k’s lack TR? Or is it just different than what the 2k or 3k would have.
You are very welcome! I think you will notice quite a bit more
low-bass TR from ported subs, compared to sealed subs. There can be differences between low-bass tactile sensations, in about the 14Hz to 20Hz range, and the room compression or pressurization which can sometimes be felt in sealed rooms, at high volume levels. If you want to read more about the mechanism that causes low-bass tactile sensations, both Section VII and Section VIII of the Guide, linked in my signature, explore that phenomenon in some detail.
One reason I mentioned the PC4000 was for the reduced foot print that it offers. The PB/PC4000 will go much lower than the PB2000 or the PB3000. You pay extra for the <20Hz frequencies, so if you want more ULF SPL and TR, that is something to keep in mind.
The PB3000's will have slightly clearer bass than your single PB2000 did, and they will have much
more mid-bass. I believe that a single PB3000 would also have a little more low-bass than a single PB2000 would, and dual PB3000's will add about another +6dB to the low-frequencies, above what a single one would add. I suspect that some of the boominess you heard was from a single sub, operating in a larger space, and there may have been some setting issues involved too.
As for whether you will like sealed or ported better, I repeat that the best way to determine that is to buy a ported sub with a sealed mode, and test it both ways. If you like ported better, you keep it and get another identical one. If you like sealed better, I would return it and get two identical sealed subs. Of course, you could keep the ported sub and run it in sealed mode, but that doesn't seem as cost-effective to me. SVS will work with you, whatever you decide.
The key point, though, is that you won't be able to decide this on an abstract level. If we were good at doing that, we wouldn't have to exchange and upgrade our subs as much as we do on these threads. You really need to test the ported/sealed option, in your own room, to decide what you like better. And, your final choice may involve some sort of compromise, where one priority emerges as more important than a competing one. That is another reason why abstract discussions, like this one, can only take you so far.
Edit: Based on something Blake said in response to the above post, I decided to edit my post for others who may be reading along. I definitely think that room size, and room construction, can be very important factors in subwoofer selection. For instance, small rooms can add a lot of room gain, and a room with a suspended wood floor can make low-frequencies sound and feel very different, compared to a concrete floor laid on soil.
Having said that though, I honestly believe that personal listener preference may be an even more important factor than the room. People who are able to visit other HT's, and hear subs demoed there, are often able to make much better informed subwoofer choices, even though their own rooms don't offer identical SPL and TR characteristics. For most of us, who don't have those opportunities however, trial-and-error is still the best way to select subwoofers for our own rooms.
We just need to find ways to take advantage of the opportunities that SVS's free-trial period give us. If we are considering moving-up to one of the higher model subs, and we are debating sealed versus ported, we can try both modes in some of the ported subwoofers. That is the easiest head-to-head comparison that we will ever make, because we never even have to move the subwoofer from the room position that works best. And, if we are willing to dispense with room EQ for some of our listening comparisons, we can cycle back-and-forth between sealed and ported fairly quickly if we want to.
Personally, I prefer longer listening sessions, when I am evaluating any kind of speakers. So, the quick back-and-forth is not as helpful for me, as just allowing impressions to form gradually, in their own time. But, a subwoofer with both sealed and ported modes affords us multiple ways to make comparisons, in order to better define our own preferences. Then, we just go with the type of subwoofer we like best.