I am disappointed with this wireless speaker because it just doesn't get loud enough. The average boom box can get much louder than this. It sounds fine at a low volume but when it is turned up the bass distorts and the housing hums and rattles. I returned the first one I received because it sounded awful, the second one is a little better, not much though.It would be OK to use this speaker indoors but outside it is useless unless you are within ten feet of it.Another disadvantage is that you have to manually tune it. Even a cheap cordless phone can automatically lock into the signal.There is foam rubber insulation inside the housing that may be pressed against the woofer cone. I had to open mine up and push it out of the way.