FBT Jolly 12 ba 300wRMS Powered Speaker single speaker good working condition Series: FBT Jolly SeriesModel: FBT Jolly 12ba Powered 2 way speaker, lightweight polypropylene cabinet Biamped: 250wRMS Class AB LF amp, 50wRMS Class AB HF amp Control Panel: volume control, 2 band EQ, Mic/line switch, Gnd. lift switch, Balanced Combo jack input, XLR link out 12" high excursion Woofer with 2"(51mm) voice coil, 1"(25mm)exit,high frequency driver with 1.4" diaphram