PA midwoofer Driver Diameter - 260 mm Power - 400 W Voice coil diameter - 50 mm Impedance - 8 Ω SPL - 98 dB Fs - 54 Hz Qts - 0,28 Vas - 50 L Cone material - Modified Cellulose Recommended enclosure - Bass - Reflex 40 L @ 60 Hz or 7 L closed (midrange application)