I have extensively tested the PB13 and the PC13 against each other and found the 2 quite different.
To start off with, here is the proof I actually did the testing and I was using REW to setup and analyse everything:
After a considerable few hours I came to only 1 conclusion, the box was better. I posted my findings on another forum and it seemed to cause some debate as well as a bit of backlash :bigsmile:
Anyways, I found that on paper (well REW) the in room response of the 2 subs in any given position was
pretty much exactly the same, so there was no debate for me on the performance side of things. I did however find that the cylinder seemed 3-4 db louder given the same settings and after system setup and calibration was carried out. This gave the cylinder more apparent power from an audible POV, but it just didnt seem as controlled. It was more boomy, and it did cause doors etc in the room to rattle a bit more.
When I tested the box it had the same power and authority, but was ever so slightly quieter. I could feel it the same but it wasnt booming the same. The bass had more texture than the cylinder and sounded more accurate. For music this made the box the clear superior, and for movies, scenes like the hospital demolition in The Dark Knight were much better. The collapse of the building was just a loud constant rumble with the cylinder, where as with the box you could hear a definite difference as the building started to crumble, to full collapse and then the quieter rumbles of the last remnants settling.
Other tests included the chuffing thresh hold of the 2 subs, and the box seemed to suffer very little unless the attempt to get it to chuff was deliberate, where as the cylinder did it on a regular basis. Also I found the grill on the cylinder, at highish spl levels, significantly contributed to the soundtrack with grill noise, and this was very distracting for me. The grill was never an issue on the box.
All in all, the cylinder seems a power house of a brute in a Mike Tyson kinda way, while the box is just as accomplished, but with more technical ability in a Lennox Lewis kinda way.
Just my ten pence. :sweat: