Guys, using 2 Ampeg SVT-15en cabs with and SVT. One cab was empty when I got it and the other had the stock speaker. Got 2 JBL E140's reconed and put them in. Sound good but they don't really project. MY B15 cab sounds good with any amp in my opinion. That's what I'm looking for. Any suggestions to changing port size, length, tricks, etc. Appreciate it!