{"product_id":"skar-audio-rpx4-4-2-way-coaxial-car-speakers","title":"Skar Audio RPX4 4\" 2-Way Coaxial Car Speakers","description":"\u003cp\u003e\u003cstrong\u003eSkar Audio RPX4 are 4-inch, 2-way coaxial car speakers sold as a pair that deliver clear midrange and crisp highs with 120 watts peak handling and a 20mm silk dome tweeter.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese compact coaxial speakers replace factory units while improving clarity and durability without requiring extra amplification. Built with a microfiber paper cone and butyl rubber surround, the RPX4 pair balances musical detail and long-term reliability. They suit small doors, rear decks, or factory locations where space is limited but better sound is wanted.\u003c\/p\u003e\n\n\u003ch3\u003eHow do the RPX4 speakers improve factory sound?\u003c\/h3\u003e\n\u003cp\u003eThe RPX4 speakers are designed to be a direct upgrade over many stock 4\" units by offering cleaner midrange and defined high frequencies. Their silk dome tweeter smooths out sibilance and the microfiber cone keeps vocals natural. Sensitivity and impedance match common factory radios so you get audible improvement even without an external amp.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigher sensitivity (89 dB) for better volume from factory head units\u003c\/li\u003e\n  \u003cli\u003e20mm silk dome tweeter for clearer highs and vocal presence\u003c\/li\u003e\n  \u003cli\u003eMicrofiber paper cone for balanced midrange response\u003c\/li\u003e\n  \u003cli\u003eButyl rubber surround for reduced distortion and longer life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these speakers handle louder listening or an amplifier?\u003c\/h3\u003e\n\u003cp\u003eThe RPX4 pair handles up to 120 watts peak (60W each) and 30 watts RMS per pair, so they perform well with moderate volume levels. They are suitable for use on stock radio power and pair nicely with a small amplifier for more headroom. Avoid sustained clipping from overdriven systems to protect the silk tweeter and voice coil.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePeak power: 120 watts per pair (60W each) for dynamic peaks\u003c\/li\u003e\n  \u003cli\u003eRMS rating: 30 watts per pair for continuous listening without strain\u003c\/li\u003e\n  \u003cli\u003e4-ohm impedance matches most factory and aftermarket head units\u003c\/li\u003e\n  \u003cli\u003eWorks well with modest external amplification for cleaner output\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat kind of sound profile and frequency coverage do they deliver?\u003c\/h3\u003e\n\u003cp\u003eThese 2-way speakers cover a broad audible range from 50 Hz to 20 kHz with a smooth roll-off below tight bass. Expect focused mids, clear highs from the silk tweeter, and limited deep bass due to their compact 4\" size. They are ideal for improving clarity and detail rather than replacing full-range sub-bass performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFrequency response: 50–20,000 Hz ±3 dB for wide coverage\u003c\/li\u003e\n  \u003cli\u003eSilk dome tweeter emphasizes natural highs and reduced harshness\u003c\/li\u003e\n  \u003cli\u003eCompact cone size prioritizes midrange clarity over deep bass\u003c\/li\u003e\n  \u003cli\u003eGood choice for full-range balance in small mounting locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and easy to install are the RPX4 speakers?\u003c\/h3\u003e\n\u003cp\u003eConstruction uses durable materials such as a microfiber paper cone and premium butyl rubber surround to resist wear and maintain performance over time. Their standard 4\" form-factor fits many factory openings and mounting points, making installation straightforward for most vehicles. The speakers come as a matched pair to simplify replacing both sides for cohesive soundstage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eButyl rubber surround for longevity and consistent performance\u003c\/li\u003e\n  \u003cli\u003eMicrofiber cone resists deformation while keeping sound natural\u003c\/li\u003e\n  \u003cli\u003eStandard 4\" size compatible with common factory locations\u003c\/li\u003e\n  \u003cli\u003eSold as a pair for balanced left\/right upgrade\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Skar Audio RPX4 pair is aimed at drivers who want a noticeable upgrade from stock 4\" speakers without changing head units or adding large amplifiers. If you need clearer vocals, smoother highs, and reliable materials in a compact speaker that fits factory openings, these are a practical, budget-friendly choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these speakers sold individually or as a pair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They are sold as a matched pair, ready to replace both left and right factory speakers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the RPX4 require an external amplifier?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — they work well on factory radio power, though a small amp can provide more headroom and cleaner high-volume output.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Skar Audio","offers":[{"title":"Default Title","offer_id":48424228094109,"sku":"B01BFK1UYS","price":59.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/skar-audio-rpx4-front-view.jpg?v=1781366336","url":"https:\/\/nexoltic.com\/products\/skar-audio-rpx4-4-2-way-coaxial-car-speakers","provider":"Nexoltic","version":"1.0","type":"link"}