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Title: alot of bass and worth every penny!
Review: If you can afford this subwoofer buy it this thing rocks i plug it up and testing and playing movies-music, i could feel the bass two room away it felt like i was in the room with it and the power of my receiver was at 1/3 the way using all yamaha with bose 301 front and surround my wife keep telling me to turn it down. I haven't heard 515 but is the best money i spent got it for $229.00 with free shipping, you wouldn't be disappointed with it.
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