Open Box Electro-Voice ZXA1 Sub Speaker Cover Level 1

I bought two of these, and use them with Mackie SRM-450 V2 as the mains. Not only do they fill out the bottom end wonderfully, I use them as speaker stands. They take up a much smaller footprint than the tripod stands. I would recommend these highly for live sound reinforcement in small to medium size venues. The only down side (which really doesn't matter in my application) is that there isn't a way to change the X-over frequency or slope on the sub. In my case, I do a roll-off at 75Hz on the mains, so I do have a work around.