{"product_id":"boss-audio-systems-5-25-p55-4c-4-way-car-door-speakers","title":"BOSS Audio Systems 5.25\" P55.4C 4-Way Car Door Speakers","description":"\u003cp\u003e\u003cstrong\u003eThe BOSS Audio Systems P55.4C Phantom is a 5.25-inch, four-way coaxial car door speaker pair engineered for full-range in-vehicle sound with up to 300 watts peak power handling.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBuilt to deliver clear highs, defined mids and solid low-end from a compact 5.25\" chassis, the P55.4C combines an electroplate injection cone, rubber surround and a die-cast aluminum frame for strength and reduced resonance. Two piezo tweeters plus a dedicated mylar midrange give these coaxial speakers a layered response across 85 Hz–20 kHz, while a shallow 2.1\" mounting depth helps fit them into many factory door locations.\u003c\/p\u003e\n\n\u003ch3\u003eHow will these speakers improve my car audio clarity?\u003c\/h3\u003e\n\u003cp\u003eThe P55.4C separates frequencies across four drivers so vocals, instruments and treble detail remain distinct even at higher volumes. The rigid die-cast frame and electroplate cone reduce unwanted vibrations, producing cleaner sound with less coloration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFour-way design: dual tweeters, midrange and woofer for frequency separation\u003c\/li\u003e\n  \u003cli\u003e93 dB sensitivity for efficient output from modest headunit power\u003c\/li\u003e\n  \u003cli\u003eDie-cast aluminum basket reduces resonance and maintains linear cone travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these fit my car and how difficult is installation?\u003c\/h3\u003e\n\u003cp\u003eThe speakers have a 2.1\" mounting depth and a 4.7\" mounting hole diameter, compatible with many factory locations for 5.25\" replacements. Because wiring and door access vary by vehicle, professional installation is recommended for secure mounting and optimal sound staging.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMounting depth: 2.1 inches — fits many shallow door pockets\u003c\/li\u003e\n  \u003cli\u003eMounting hole: 4.7 inches — standard for 5.25\" speaker openings\u003c\/li\u003e\n  \u003cli\u003eSold in pairs; wiring and adapters may be needed for some factory harnesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the speaker’s key technical specs I should note?\u003c\/h3\u003e\n\u003cp\u003eThese coaxial speakers operate at 4 ohms impedance with a frequency response spanning 85 Hz to 20 kHz and a 300-watt peak power rating. The construction combines an electroplate injection cone, rubber surround, a 1.5\" aluminum voice coil and piezo tweeters to balance durability with high-frequency detail.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePeak power: 300 watts; impedance: 4 ohms\u003c\/li\u003e\n  \u003cli\u003eSensitivity: 93 dB @ 1 W\/1 m — efficient output for factory amps\u003c\/li\u003e\n  \u003cli\u003eDrivers: two 0.5\" piezo tweeters, 1.25\" mylar midrange, electroplate woofer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and supported are these speakers?\u003c\/h3\u003e\n\u003cp\u003eRugged materials—rubber surround and die-cast frame—help resist long-term fatigue and vibration from road use. BOSS Audio Systems backs these speakers with an online dealer warranty when purchased through authorized channels, and professional installation is encouraged to protect the warranty and ensure safe, reliable performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeavy-duty cast basket for structural rigidity\u003c\/li\u003e\n  \u003cli\u003eRubber surround for extended cone life and controlled excursion\u003c\/li\u003e\n  \u003cli\u003eThree-year platinum online dealer warranty (conditions apply)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The BOSS P55.4C is aimed at drivers who want a budget-friendly upgrade from factory speakers without wholesale dash modifications. It's a good match for those seeking noticeable improvements in treble clarity and midrange definition from a compact 5.25\" speaker pair, especially when used with a head unit or amplifier that can supply moderate power. Choose professional installation if you want a clean fit, trouble-free wiring and the best acoustic results.\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: Do these speakers need an external amplifier?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They are efficient (93 dB) and work with stock head units, but an amplifier improves headroom and clarity at higher volumes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are mounting brackets or adapters included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Speakers are sold as a pair; vehicle-specific adapters or brackets are not included and may be required.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BOSS Audio Systems","offers":[{"title":"Default Title","offer_id":48423714717853,"sku":"B0032FOKRO","price":49.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/boss-p55.4c-front-view.jpg?v=1781365357","url":"https:\/\/nexoltic.com\/products\/boss-audio-systems-5-25-p55-4c-4-way-car-door-speakers","provider":"Nexoltic","version":"1.0","type":"link"}