here check this out got it off a site:
Impedance: 2x4Ohm, Freq Response: 18Hz-300Hz, Sensitivity: 87dB, Power Range: 300watts Max, Qms/Qes/Qts: 5.4/0.41/0.38, Fs/Vas/Xmax: 27Hz/2.472/.354, Recommended Enclosure Size: 1.0 Cubic Feet Sealed, Mounting Depth: 5.58