hifonics Voice Coil(s) Dual Impedance (per voice coil) 4 ohms Peak Power Handling 600 watts RMS Power Handling 300 watts Woofer Composition Injection Molded Polypropylene (IMPP) Woofer Surround Rubber Minimum Sealed Box Volume 1.25 cubic feet Maximum Sealed Box Volume 2.15 cubic feet Minimum Ported ...