This bass and mid range driver is suitable for use in 2-way systems and provides a great price/performance ratio.General specificationsNominal diameter (mm/in)         254/10Power Rating (AES, W rms)         100Nominal impedance (?)             8Voice coil diameter (mm/in)         44.5/1.75Magnet type                 CeramicMagnet weight (kg/oz)             0.88/31Chassis type                 Pressed steelSensitivity (dB)             96Frequency range (Hz)             70-6000Coil material                 Round copperFormer material             Round copperCone material                 Kevlar loaded paperSurround material             Cloth-sealedSuspension                 SingleXmax (mm/in)                 2.0/0.08Gap depth (mm/in)             6.0/0.24Voice coil winding width (mm/in)     10.0/0.39Small Signal ParametersSd (m2/in2)                 0.035/53.69D (m/in)                 0.21/8.27Fs (Hz)                 70Mmt (g/oz)                 26.31/0.93Mmd (g/oz)                 22.66/0.80Qms                     7.64Qes                     0.66Qts                     0.61Re (?)                     5.8Vas (lt/ft3)                 32.6/1.15BI (Tm)                 10.10Cms (mm/N)                 0.2Rms (kg/s)                 1.5Mounting InformationOverall diameter (mm/in)         256/10.08Overall depth (mm/in)             102/4.02Cut-out diameter (mm/in)         229/9.02Mounting slot dimensions (mm/in)     6 x 8/0.24 x 0.31Number of mounting slots         4Mounting slot PCD range (mm/in)     245/9.65Unit weight (kg/lb)             2.4/5.3