Vifa coaxials will add true high fidelity to your car audio. All feature the legendary Vifa silk dome tweeters, strontium magnets and composite diaphragms. Available in 2 or 4-way configuration. Vifa 5inch 2 Way Car Speakers with Silk Dome Tweeter Cat No. CS-2393, Power handling:60WRMS, Nominal impedance: 4 ohms, Frequency response: 50Hz - 20kHz, Sensitivity: 87.9 dB SPL @1W, Re: 3.6 ohms, Qms: 4.82, Qes: 0.56, Qts: 0.5, Vas: 9.72 litres, Fs: 62Hz, Dimensions: A=128 B=135 C=120 D=62