I've had the sealed EP500 v4 for 5 weeks now. Had the ported EP350 v3 for about 4 years before that. I've had no reason to crank it to test it's upper limit, but the EP500 is a more capable critter. I don't know how to explain it other than the bass just sounds better overall.

I have no comparison of Ported EP500 vs Sealed EP500, so perhaps the answer to that is what you are really looking for.

https://docs.google.com/spreadsheet/ccc?...amp;usp=sharing