Blaupunkt 6" x 9" 4-Way Coaxial Speakers 450Watts GTX690 The Blaupunkt 450 Watt 6" x 9" 4-Way Coaxial Speakers (GTX690) are as beautiful as the sound they produce. They are made with the highest technical quality to ensure maximum reliability and durability. The GTX690 6" x 9"; Car audio speaker features a MAX power handling 450 watts (450 Watts Peak) and an RMS power handling of 150 watts (450 Watts Peak). Other features include the high-quality polypropylene woofer cone, a butyl rubber surround with mylar dome tweeter, and ceramic magnet. 150 Watts RMS (450 Watts Peak)- Impedance 4-Ohms- Included Grills. High Quality PP Cone Butyl Rubber Surround 1 High Temperature Aluminum Voice Coil Ceramic Magnet Mylar Dome Tweeter 150 Watts RMS / 450 Watts Peak Impedance: 4 Ohm Frequency Response:50Hz 20KHz Sensitivity: 90dB In The Box: 1Pair,with Grilles & Accessories .