Style:6.5" woofer Frequency range: Fo-4KHz DCR: 6 Ohm Sensitivity(1W/1M): 89dB Fo: 37Hz Power handling: 30W/60W(Max) Diaphragm material: Paper mix with fiber Magnet size: Φ42 x 20 x 13 ( OD x ID x H)mm Magnet material: N42H Qms.: 5.606 Qes.: 0.354 Qts.: 0.333