The DS Four-Inch Triaxial (3-Way) Speakers are a great way to upgrade the sound in your car. Using zero protrusion PEI tweeters ensures you get every bit of clarity you need, without interfering with factory grilles. A stamped steel framework supports a ribbed, UV-treated foam surround and rigid polypropylene cone with EVC (Extended Voice Coil) technology, for the best sonic quality. Add a DX amplifier to increase the level and quality of the volume in your ride. These DS speakers work best with 90 watts of recommended power.