The two-way APBMW K4M kit creates a three-dimensional sound stage and give the musical message the essential timbre accuracy. The 100 mm (4 in.) midrange is provided with a water-repellent pressed-paper cone, a material providing natural sound. It features a low resonance frequency that allows hi-pass cut-off in the 150-200 Hz range for an excellent mid-low reproduction. The 25 mm coil and Tetolon dome tweeter features a great extension on both medium and high frequencies and is optimized for off-axis output, for an extended sound stage in the three dimensions, that amplifies the perception of reality in the car cabin.We're a genuine UK based company with over 30 years experience and full back up technical knowledge Your sale is important to us whether you purchase a multi-media system or a tax disc holder you can be assured of our 100% commitment If you do not see what you are looking for please ask as we are adding new items every day Please note - some items may incur extra shipping charges that have to be sent by courier and are too large / expensive to be sent by Royal Mail (for example headlamps, headunits, speakers, lowering springs etc) to the following postcode areas, Channel Islands, BT, most IV, HS, KA-27-28, KW-15-17, AB30-38, AB44-56, FK17-99, G83, KW1-14, PA21-40, PH18-26, PH30-41, PH49-50, all ZE, IM, and any other non mainland postcodes. Please also note that delivery times are normally 2-3 working days for these postcode regions Please note - For items that have to be sent by courier in Europe there maybe an extra charge for some countries such as NORWAY, ICELAND, MALTA & CYPRUS