the PB13 against the EP600, I'm not sure you would actually notice this difference with music (though admittedly I have not compared to the 500). Before I calibrated the two subs, I believed that the PB13 hit harder for music as well, but once calibrated, I could not notice a significant difference in music between the two on any kind of music. The exception was when running the PB13 in sealed mode.
When running sealed, it definitely had a different sound and did "punch" more than when running ported. However, I felt it gave up too much in SPL for home theater in this mode. Since I listen to lot more HT than music, that wasn't a great trade off for me. If you do more music than HT, the sealed PB13 may give you the sound you're looking for.
Jason
And yet to me, I
perceived the PB13 to hit harder in all modes. I suspect it is due to the more encompassing/textured sound the EP subs have.
