Flat wall or 4th order?

[dylan117]

Ok so here's my situation, I currently have 2 FI SP4 18s fully loaded and am debating rebuilding a wall in my blazer. I was throwing up the idea of 4 18s in a flat wall or 3-4 in a 4th order. Obviously this would be a b-pillar build. I want it for musical purposes only and maybe the occasional metering. I want it to be a demo machine that can pull nice hairtricks and tap people out (hopefully). What would be best for a daily, musical setup. I mainly want a lot of air movement and loudness. Thanks!

[MrSkippyJ]

The easiest will be a simple ported wall.