Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Love the rumble - but watch for trouble!

Finally, the last speaker of my 5.1 setup! So I pop in the "Blade" DVD -- the added bass from this subwoofer sounded wonderful, and definitely brought a smile to my face. HOWEVER, about 30 minutes in the movie, it died! Kaput. So, off to the repair shop I go (JBL's warranty covered it completely), to discover that there was a bad diode. It was replaced, and once again I am smiling. It sounds great with bass heavy CD's as well, though the front firing speaker is a bit more directional than I would like. Overall (and after the repair), good speaker!