The In Phase Car Audio XTC13.2 210W 13cm/5.25" Coaxial Speakers features a rotary tweeter design which enables you to adjust the sound to the required listening angle. and what a sound it is!Delivering 210 watts of peak power. with rich. sharp and crystal-clear sound. the smart design of the 5.25 speaker means it can be positioned anywhere and still impress. This is down to the powered and coated speaker chassis. which dampens distortion and gives more detail. and the glass fibre woven cone which adds rigidity and strength. producing a more powerful bass response.Powered coated dampened speaker chassis helps to reduce the distortion from the speaker chassis thus improving the focus of the sound and giving a more detailed sound stage and focus. Rubber boot design helps to wrap the speaker magnet protecting it from the elements as well as absorbing vibrations. Cosmetically finished to perfection this speaker not only is beautiful to listen to is beautiful to look at.