Bewinner 4 inch Car Audio Coaxial Speaker, 100W 4Ohm High Power Mid Range Stereo Car Speaker, High Fidelity High Sensitivity Car Audio Stereo Speakers for Car Sound Systems: Amazon.co.uk: Electronics & Photo
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97dB Peak Sensitivity Sound System Speakers with Exit Compression Driver - China Professional Speakers Sound and Sound Systems Equipment Professional Speaker price | Made-in-China.com