I show outdoor Blu-Ray movies on a Da-Lite screen, running the movies from a Blu-Ray player, positioned on a Da-Lite projection stand, to a widescreen hi-def Epson projector. I have a Panlong HDMI audio extractor connected, with 2 HDMI cables, between the player & projector -- the sound is then connected from the Panlong to the Behringer speaker (which is mounted on a speaker tripod).

I use a 10-ft cable that has R&L RCA connectors on one end (for the Panlong unit) to a 1/4" TS (mono) connector (for the Behringer speaker). If I want to play outdoor MP3 music, I connect an MP3 source with a 1/8" TRS (stereo) iPhone-type connector on one end to a 1/4" TS (mono) connector for the speaker. Sweetwater.com was able to provide the cables I was looking for in the lengths I needed.

The results are great for outdoor movies - you just need a nice evening without rain or wind!

These are fantastic as stand-alone self-powered units to work in unison with our current PA system. They add rich texture and can fill huge spaces with more vibrant sound than just the 2-speaker system we originally put together, and since they do not draw on the original amplifier and are only using a passive signal, it works out really well. Highly recommend these as an addition to any small PA system, just be sure to use the Speaker Out L and R connectors on your mixing board, then set the volume you want with the dials on the back of these speakers.

I had vouched to never buy anything Behringer ever again, because I have had nothing but problems with their gear in the past. I was in the market for a set of powered floor monitors for my rehearsal studio. I blew up my old wedges and my amp was acting up also. So I decided to switch to powered speakers. I use my PA both for vocals and keyboard at band rehearsal (loud rock band) and for my drum students to play along with music. I had a budget of $200 a piece for these powered speakers. The B210D was really the only option out there in my budget. The reviews were all raving, so I took the plunge. I decided to just get one first, in case it was a disappointment. Well, it wasn't. At first, when I took the speaker out of the box, I was thinking "I'm screwed. This thing is way too small and is not going to be powerful enough." Then I plugged it in. Mackie board, XLR cable, iPhone plugged into the board. Holy crap. This thing packs a punch. With your eyes closed, you'd swear it was a speak at least twice the size. It's LOUD. But it doesn't distort. I was able to crank the volume up to pain threshold, where I couldn't possibly go any louder before my head would explode, and the sound was still clear and not distorted. And the volume knob was halfway. This thing sounds really nice, focused and much bigger than it looks. We'll see how it holds up, which has always been the issue with Behringer, but for now, the second one is going to be ordered asap.

So for $200 you probably won't find a better speaker. It is very lightweight (maybe 20lbs) and the amount of sound you can get out of it is astounding. I purchased it for spoken word and it does that great, but when I ran music through it I was surprised at the quality I was getting, and it is LOUD! I usually never need to turn it up more than half way to get the volume I want, and I use it in noisy bars. Honestly, thinking about getting a second one for a stereo pair.

UPDATE: So I did end up purchasing the 2nd speaker for an outdoor Veterans Day celebration and man am I glad I did, two made for loud rocking tunes!

IT DOES NOT WORK WITH A REGULAR AUX ADAPTER THAT HAS 2 BLACK LINES
I bought it for a party (Jewish holiday of Purim) it works very well, it is clear, has good bass, high volume, easy to travel with it.
But remember this:
you need an aux with only one black line at the top of the wire.
LOOK AT THE DIFFERENCE IN THE 2 PICTURES