Summary: Type: subwoofer; The number of bands: 1; Power: 250 watts (maximum); Sensitivity: 92 dB; Frequency range: 22 - 200 Hz; Housing: no; Additional information: Woofer size 250 (10") mm 4-Ohm Impedance. Qts, electro-mechanical quality factor of 0.3. Vas, equivalent air volume 63 HP Fs, self-resonant frequency of 32 Hz. Woofer material polypropyle ...