Specfication for PL-8:  Frequency response: 65Hz-18KHz RMS power: 150w Programe power: 300w Norminal impedance: 8ohm Sensitivity: 96dB/w/m Max spl: 117dB Component: 8" + 1" horn Dispersion: 100h x 90v =================================== Specfication for PL-10:  Frequency response: 65Hz-18KHz RMS power: 200w Programe power: 400w Norminal impedance: 8ohm Sensitivity: 97dB/w/m Max spl: 120dB Component: 10" + 1" horn Dispersion: 100h x 90v ====================================== Specfication for PL-12:  Frequency response: 60Hz-18KHz RMS power: 300w Programe power: 600w Norminal impedance: 8ohm Sensitivity: 99/w/m Max spl: 123dB Component: 12" + 1.5" horn Dispersion: 100h x 90v ================================= Specfication for PL-15:  Frequency response: 55Hz-18KHz RMS power: 350w Programe power: 700w Norminal impedance: 8ohm Sensitivity: 100/w/m Max spl: 125dB Component: 15" + 1.5" horn Dispersion: 100h x 90v ================================ Specfication for PL-2150:  Frequency response: 50Hz-20KHz RMS power: 750w Programe power: 1500w Norminal impedance: 4ohm Sensitivity: 104/w/m Max spl: 132dB Component: 15" x2 + 1.7" horn Dispersion: 100h x 90v ==================================== Specfication for PL-18w:  Frequency response: 40Hz-120Hz RMS power: 400w Programe power: 800w Norminal impedance: 8ohm Sensitivity: 98/w/m Max spl: 124dB Component: 18" Dispersion: N/a The PL sereis interates a selection of cost effective full range systems suitable for a wide variety of fixed or applications in small and medium sized environments where reduced cabinet dimensions and high output capability are essential.