{"product_id":"jbl-stage3-58f-5-1-4-coaxial-car-speakers","title":"JBL Stage3 58F 5.25\" 2-Way Coaxial Car Speakers","description":"\u003cp\u003eThe \u003cstrong\u003eJBL Stage3 58F 5.25\" 2-Way Coaxial Car Speakers\u003c\/strong\u003e deliver 60W RMS \/ 480W peak power at a True 4-ohm nominal impedance, bringing Stage3 Series engineering to the popular 5.25\" format. A glass-fiber reinforced Plus One™ cone, PEI balanced dome tweeter, and eco-conscious construction — this is everything your factory 5.25\" speakers aren't.\u003c\/p\u003e\n\n\u003cp\u003eThe woofer is built on JBL's patented \u003cstrong\u003ePlus One™ cone architecture\u003c\/strong\u003e with a \u003cstrong\u003e10% glass-fiber reinforced polypropylene cone\u003c\/strong\u003e — the added rigidity reduces unwanted flex for tighter, more accurate bass reproduction with deeper extension down to 55Hz. The Plus One™ design increases effective cone area beyond a standard 5.25\" driver for more bass output and musical body without upsizing. Sensitivity reaches 89dB at 2.83V, and the \u003cstrong\u003eTrue 4-ohm impedance\u003c\/strong\u003e is optimized to extract maximum clean power from both factory head units and aftermarket amplifiers. The integrated \u003cstrong\u003ePEI balanced dome tweeter\u003c\/strong\u003e delivers smooth, detailed high-frequency reproduction that spreads evenly throughout the cabin without harshness or fatigue. Frequency response spans 55Hz to 20kHz for full musical coverage. Built with \u003cstrong\u003epost-consumer recycled plastics and PVC-free wiring\u003c\/strong\u003e — premium sound with a reduced environmental footprint.\u003c\/p\u003e\n\n\u003cp\u003eInstallation is a true drop-in for most vehicles with factory 5.25\" locations. Pair with a 4-channel amplifier rated 40–75W RMS per channel for the best results, or run directly off a quality head unit — the True 4-ohm design and 89dB sensitivity make these a solid performer in head-unit-only setups. Ideal for everyday listening across all genres where you want noticeably better sound without a complex install.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the JBL Stage3 58F?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass-Fiber Plus One™ Cone:\u003c\/strong\u003e 10% glass-fiber reinforcement delivers tighter bass and more accurate midrange than standard polypropylene — in a 5.25\" package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue 4-Ohm Impedance:\u003c\/strong\u003e Optimized for maximum clean power transfer from factory head units and aftermarket amplifiers — no impedance mismatch, no wasted watts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePEI Balanced Dome Tweeter:\u003c\/strong\u003e Smooth, detailed high-frequency reproduction that spreads evenly throughout the cabin without harshness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e89dB Sensitivity:\u003c\/strong\u003e Efficient design delivers solid output from both head units and amplifiers — a meaningful upgrade even without an external amp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60W RMS \/ 480W Peak Power Handling:\u003c\/strong\u003e Handles real-world amplifier power without distortion or thermal compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55Hz – 20kHz Frequency Response:\u003c\/strong\u003e Full musical bandwidth from punchy bass to crisp high-frequency detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Drop-In Fit:\u003c\/strong\u003e Designed for standard 5.25\" OEM locations — no cutting or fabrication required in most vehicles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEco-Friendly Construction:\u003c\/strong\u003e Post-consumer recycled plastics and PVC-free wiring — premium performance with a lighter environmental footprint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAmplifier \u0026amp; Installation Recommendations\u003c\/h2\u003e\n\u003cp\u003eThe Stage3 58F's True 4-ohm impedance and 89dB sensitivity make it a strong performer off a factory head unit — you'll hear a clear improvement over OEM speakers right out of the box. For the best performance, pair with a 4-channel amp rated 40–75W RMS per channel at 4 ohms. Mount in the factory 5.25\" location — no cutting or fabrication required in most vehicles. Use 16-gauge or heavier speaker wire for runs over 6 feet to minimize resistance losses.\u003c\/p\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eJBL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSTAGE3 58F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003e2-Way Coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker Size\u003c\/td\u003e\n\u003ctd\u003e5.25\" (130mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Handling (RMS)\u003c\/td\u003e\n\u003ctd\u003e60W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Handling (Peak)\u003c\/td\u003e\n\u003ctd\u003e480W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity (@ 2.83V\/1m)\u003c\/td\u003e\n\u003ctd\u003e89dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e55Hz – 20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd\u003e4 ohms (True 4-Ohm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWoofer Cone Material\u003c\/td\u003e\n\u003ctd\u003ePlus One™ Glass-Fiber Reinforced Polypropylene (10%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTweeter Type\u003c\/td\u003e\n\u003ctd\u003ePEI Balanced Dome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003ePost-Consumer Recycled Plastics, PVC-Free Wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e1.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I run the Stage3 58F off my factory head unit?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the True 4-ohm impedance and 89dB sensitivity are designed to work well with factory head units. You'll hear a clear improvement over OEM speakers immediately. An external amplifier will unlock the full 60W RMS potential for even better dynamics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What amplifier should I pair with the Stage3 58F?\u003c\/strong\u003e\u003cbr\u003eA: A 4-channel amp rated 40–75W RMS per channel at 4 ohms is ideal. The True 4-ohm design ensures clean, efficient power transfer without impedance mismatch issues.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the Stage3 58F differ from the Stage3 648F?\u003c\/strong\u003e\u003cbr\u003eA: The 58F is a 5.25\" speaker designed for vehicles with smaller OEM door or dash locations, while the 648F is a 4x6\" oval format. Both share the same Plus One™ glass-fiber cone, PEI dome tweeter, True 4-ohm design, and power handling specs. Choose based on your vehicle's OEM speaker size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the Stage3 58F fit my vehicle?\u003c\/strong\u003e\u003cbr\u003eA: The 58F is designed for standard 5.25\" OEM locations. Contact us at Trinity Car Audio with your vehicle's year, make, and model to confirm fitment before ordering.\u003c\/p\u003e","brand":"JBL","offers":[{"title":"Default Title","offer_id":43698238914627,"sku":"JBLSPKS358F","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/9575\/7123\/files\/LS_JBL_STAGE_3_CAR_AUDIO_58F_HERO_0036_x1_1f5025cb-d3b9-452f-ad26-25305da223d1.png?v=1787255973","url":"https:\/\/www.trinitycaraudio.com\/products\/jbl-stage3-58f-5-1-4-coaxial-car-speakers","provider":"Trinity Car Audio","version":"1.0","type":"link"}