TR Two-Way Loudspeaker With " LF drivers and a JBL compression driver. Different low-pass filters in each of the LF drivers helps deliver smooth performance through the crossover region. Frequency Range: Hz - kHz (- dB from rated sensitivity)Power Capacity Watts (Continuous Pink Noise EIA RSA, 8 hrs)Peak Pink Noise: WattsNominal Impedance:4 OhmsSensitivity: dB (1W, 1m)Nominal Dispersion:° Horizontal x ° VerticalLF Driver:2 x mm ( in)HF Driver:Pure Titanium Diaphragm Compression Driver. liquid cooledHorn:Optimized ApertureDimensions (HxWxD): x x mm ( x x in)Weight: kg ( lb)