DS18 ZXI-5254 Glass Fiber Cone 5.25" 2-Way Coaxial Car Speaker 180 Watts 4-Ohm The ZXI series is the go to DS18 line for great sounding audio that not only has very high volume, but also amazing sound quality for an amazing price. The ZXI-5254 is 5.25" inch, 4 ohm coaxial speaker designed for mid tier audio enthusiasts to the extreme as they have an amazing range of frequencies and loudness. The 2- way design will ensure that you receive a full range of frequencies for an audio experience that you will truly remember. Highlights The ZXi line is a complete line of amps, subs, mids, and tweeters so you can match all your equipment up to be the same for an amazing show quality look. 5.25" inch 2- way 4 ohm speaker requiring 60w RMS and 180w Max power handling that gives amazing sound from low to extremely high volume. 2- way design will be sure to give you a full range of frequencies for an amazing audio experience to remember. Technical Details Download ZXI-5254 Product Manual Nominal Diameter 5.25” Nominal Impedance 4 ohms RMS Power Handling 60 Watts MAX Power Handling 180 Watts Sensitivity (1w/1m) 89dB Frequency Response 40Hz-20KHz Recommended HI Pass Crossover 60Hz Speaker Type 2-Way Midrange: Voice Coil Diameter 1” / 25.5mm Voice Coil Former Material KSV Winding Material EISV Cone Material Glass fiber Surround Material Rubber Basket Material Steel Magnet Material. Barium Ferrite Magnet Weight 10.9 oz / 310g Tweeter: Nominal Diameter 1" / 25.4mm Voice Coil Diameter 0.8" / ø20.4mm Voice Coil Former Material KSV Winding Material EISVM Diaphragm Material PEI Magnet Material. Neodymium Magnet Weight 0.3 oz / 8.5g Thiele & Small Parameters Equivalent Volume 4.86L Excursion (one way) 2.3mm Free Air Resonance 77Hz Mechanical Factor 8.39 Electrical Factor 0.87 Total Factor 0.79 Mechanical Mass 9.93g Mechanical Compliance 457mm/N BL Factor 4.321 Cone Area 86.5cm2 DC Resistance 3.5 ohm Mechanical Mass w/o air 9.0g Measurements Overall Diameter 5.08” / 129mm Overall Depth 2.80” / 71mm Front Mount Baffle Cutout 4.45” / 113mm Mouting Depth 2.28” / 58mm Motor Diameter 3.31” / 84mm