“500W Class-D Active Wooden Subwoofer – 2 x 10” Neodyumium Magnet Woofers (2.5” Voice Coil) – Max SPL: 127 dB – Frequency Response: 50 Hz ÷ 100 Hz – SMPS; protected against overload, over temperature, short circuit” APPLICATIONS – Suitable for both indoor and outdoor use. – Concert halls. – Theatrical sound reinforcement. – Medium-sized clubs. – DJ-set. – Drum-fill. – Audio-video applications.