Awesome indoors or outdoors!
I recently purchased a pair, and WOW they are sweet! They are punchy, brilliant, and so very easy on my back. I did my own performance test on them in my backyard. I set them on stands, on one end of my yard spaced about 15 feet apart, ran them to a Crown XTi2000 in bridged mode, and only slightly increased the low end. With a few selected dynamic Blue Oyster Cult tunes cued on my laptop through my Mackie ONYX mixer, I cranked them up to the point I thought they were beginning to distort, and backed off the volume slightly. I then walked to the opposite end of my yard, about 75 feet away, and stood directly out in front of the MRX's. I could hardly believe how much earth-pounding punch and clarity my ears and body were witnessing! Great job JBL, these loudspeakers absolutely have my strongest recommendations. THEY ROCK!!! My neighbors must think I've lost it! I plan to purchase a couple more, to run side-by-side for larger crowds.