Why didn't you photograph the other side? "0909" means the capacitor was made in the 9th week of the year 2009. "RLX" is a model of OST brand capacitor, probably their lowest impedance/lowest ESR ...
Awhile ago, my subwoofer just stopped working (actually, if you turn it on, it just makes a loud buzzing noise). I tried getting it open but all the screws are messed up and i've since left it ...