2-way 600W professional loudspeaker, under full power operation, low frequency is clean and powerful, medium high frequency is clear and smooth. Used mostly in DISCO field as main sound box, also in a long life design. 15-inch bass speaker with 4ohms impedance and 100dB sensitivity. 40Hz to 20kHz frequency response. 45° horizontal symmetry and 90° vertical symmetry. 18mm high density board enclosure with dark gray paint surface.