Unfortunately, for a band/concert type scenario, these are not the type of speakers that are ideal, seems like such a waste. Looking at your posts, you started with an EP500 and now we are talking about an EP600, so it does not appear we are talking about the same sub from beginning to end. Those are your only posts about this problem within 1 year, wow. It appears Brent was actually involved in your first complaints since January. Anyway, hope it all works out for you.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85