{"product_id":"black-diamond-5-25-coaxial-car-speakers-dia-525-2","title":"BLACK DIAMOND 5.25\" Coaxial Car Speakers DIA-525.2","description":"\u003cp\u003e\u003cstrong\u003eBLACK DIAMOND DIA-525.2 are compact 5.25\" two-way coaxial car speakers designed to deliver clear highs and balanced mids with a 40W RMS power handling for reliable in-car listening.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese speakers combine an IMPP cone woofer with a PEI dome tweeter and a durable rubber surround to produce full-bodied sound across a wide frequency range. Built for straightforward upgrades, the DIA-525.2 fits most factory locations and offers a tasteful black-steel basket and included grills for a finished look. With 4-ohm impedance and 83 dB sensitivity, they work smoothly with most head units and amplifiers.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these speakers improve everyday listening in the car?\u003c\/h3\u003e\n\n\u003cp\u003eThe DIA-525.2 emphasizes clear midrange and crisp high frequencies so vocals and instruments are more defined than with many factory speakers. The coaxial design keeps installation simple while the tweeter handles the highs, leaving the woofer to reproduce midbass cleanly. Together they reduce muddiness and bring more detail to familiar tracks.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e5.25\" IMPP cone for balanced mids and low-mid punch\u003c\/li\u003e\n  \u003cli\u003ePEI dome tweeter for pronounced, distortion-resistant highs\u003c\/li\u003e\n  \u003cli\u003e80Hz–20kHz frequency coverage for broader detail\u003c\/li\u003e\n  \u003cli\u003eRubber surround minimizes unwanted vibrations for cleaner sound\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these speakers handle higher volume without distorting?\u003c\/h3\u003e\n\n\u003cp\u003eYes — rated at 40W RMS and 120W peak, the DIA-525.2 can sustain typical listening levels from a factory head unit or modest aftermarket amplifier without audible strain. The components and basket design help dissipate energy and keep cone motion controlled at louder settings. However, sustained extreme power beyond the RMS rating risks damage.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e40W RMS for continuous, distortion-controlled playback\u003c\/li\u003e\n  \u003cli\u003e120W peak for short bursts of added loudness\u003c\/li\u003e\n  \u003cli\u003e4-ohm impedance for wide compatibility with car stereos\u003c\/li\u003e\n  \u003cli\u003e83 dB sensitivity helps achieve decent volume with less amplifier power\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to install the BLACK DIAMOND DIA-525.2 speakers?\u003c\/h3\u003e\n\n\u003cp\u003eThese 5.25\" speakers are designed to fit many common factory speaker openings, making them a direct-swap option in numerous vehicles. The compact frame and included grills simplify mounting and finishing touches. Basic hand tools and a standard wiring harness or adapter are typically all that’s required for a clean upgrade.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompact 5.25\" diameter fits many factory locations\u003c\/li\u003e\n  \u003cli\u003eStandard 4-ohm wiring matches most car head units and amps\u003c\/li\u003e\n  \u003cli\u003eIncluded grills provide a finished appearance post-install\u003c\/li\u003e\n  \u003cli\u003eBlack steel basket resists vibration for secure fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and design choices boost long-term performance?\u003c\/h3\u003e\n\n\u003cp\u003eThe speaker uses an injection-molded polypropylene (IMPP) cone for a lightweight yet rigid diaphragm that reproduces mids cleanly. A PEI dome tweeter resists heat and maintains clarity at high frequencies, while the rubber surround ensures reliable cone travel and longevity. The overall construction prioritizes consistent sound and durability under typical automotive conditions.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIMPP cone for rigid, low-resonance midrange\u003c\/li\u003e\n  \u003cli\u003ePEI dome tweeter for stable treble response\u003c\/li\u003e\n  \u003cli\u003eRubber surround for extended durability and reduced distortion\u003c\/li\u003e\n  \u003cli\u003eBlack steel basket for structural strength and vibration control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The BLACK DIAMOND DIA-525.2 is ideal for drivers seeking an affordable, reliable step up from factory speakers — especially those who want clearer vocals and brighter highs without installing separate component sets or a large amplifier. It suits commuters, casual listeners, and anyone replacing worn stock speakers in compact and mid-sized cars who values straightforward installation and consistent performance.\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 compatible with factory head units?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—4-ohm impedance and 83 dB sensitivity make them compatible with most factory head units and modest aftermarket amps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the speakers come as a pair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the BLACK DIAMOND DIA-525.2 is sold as a pair and includes grills for both speakers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BLACK DIAMOND","offers":[{"title":"Default Title","offer_id":48413463511197,"sku":"B091V2J4BN","price":49.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/black-diamond-front-view-dia-525.2.jpg?v=1781267400","url":"https:\/\/nexoltic.com\/products\/black-diamond-5-25-coaxial-car-speakers-dia-525-2","provider":"Nexoltic","version":"1.0","type":"link"}