PYLE PRO PL42BL Blue Label Speakers (4, 2 Way) Features: Non-fatiguing Butyl Rubber Surround Series: Blue Label Series Type: 2-way Speaker Tweeter: 1/2' Neodymium Film Dome Tweeter Voice Coil: 3/4' High Temperature ASV Voice Coil Magnet Construction: 20 oz. Magnet Structure RMS Power: 90 Watts Sensitivity: 88 dB