{"product_id":"jbl-stage3-48f-4-coaxial-car-speakers","title":"JBL Stage3 48F 4\" 2-Way Coaxial Car Speakers","description":"\u003cp\u003eThe \u003cstrong\u003eJBL Stage3 48F 4\" 2-Way Coaxial Car Speakers\u003c\/strong\u003e deliver 50W RMS \/ 400W peak power at a True 4-ohm nominal impedance, bringing Stage3 Series glass-fiber engineering to the compact 4\" format. A drop-in upgrade for dash, door, and rear deck locations where space is tight — more bass, cleaner highs, and a True 4-ohm design that works equally well off a head unit or an amp.\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 cone\u003c\/strong\u003e — the added rigidity reduces unwanted flex for tighter, more accurate bass reproduction with frequency response reaching down to 80Hz. The Plus One™ design increases effective cone area beyond a standard 4\" 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 80Hz to 20kHz. Built with \u003cstrong\u003eeco-friendly recycled plastics and PVC-free wiring\u003c\/strong\u003e — premium sound with a reduced environmental footprint. The laser-etched carbon-fiber finish adds a premium visual touch.\u003c\/p\u003e\n\n\u003cp\u003eInstallation is a true drop-in for most vehicles with factory 4\" locations — common in dash, rear deck, and door applications across a wide range of vehicles. Pair with a 4-channel amplifier rated 30–60W RMS per channel for the best results, or run directly off a quality head unit. Ideal for everyday listening where you want noticeably better sound in a compact speaker format.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the JBL Stage3 48F?\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 compact 4\" 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\u003e50W RMS \/ 400W Peak Power Handling:\u003c\/strong\u003e Handles real-world amplifier power without distortion or thermal compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e80Hz – 20kHz Frequency Response:\u003c\/strong\u003e Clean musical bandwidth from midrange punch to crisp high-frequency detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Drop-In Fit:\u003c\/strong\u003e Designed for standard 4\" OEM locations — no cutting or fabrication required in most vehicles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEco-Friendly Construction:\u003c\/strong\u003e 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 48F's True 4-ohm impedance and 89dB sensitivity make it a strong performer off a factory head unit. For the best performance, pair with a 4-channel amp rated 30–60W RMS per channel at 4 ohms. Mount in the factory 4\" location — no cutting or fabrication required in most vehicles. Use 16-gauge or heavier speaker wire for runs over 6 feet. Note: at 80Hz low-frequency extension, these speakers work best paired with a subwoofer for full-range system coverage.\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 48F\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\u003e4\" (100mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Handling (RMS)\u003c\/td\u003e\n\u003ctd\u003e50W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Handling (Peak)\u003c\/td\u003e\n\u003ctd\u003e400W\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\u003e80Hz – 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 (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\u003eRecycled Plastics, PVC-Free Wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.2 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: What vehicles commonly use 4\" speakers?\u003c\/strong\u003e\u003cbr\u003eA: 4\" speakers are common in dash locations, rear decks, and door panels across a wide range of vehicles including many Honda, Toyota, Mazda, and European models. Contact us at Trinity Car Audio with your year, make, and model to confirm fitment before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I run the Stage3 48F 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 50W RMS potential for even better dynamics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a subwoofer with the Stage3 48F?\u003c\/strong\u003e\u003cbr\u003eA: The 48F's 80Hz low-frequency extension means it won't reproduce deep bass on its own. For full-range system coverage, pairing with a subwoofer is strongly recommended. The Stage3 48F handles midrange and highs; a subwoofer handles everything below 80Hz.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the Stage3 48F compare to the Stage3 58F?\u003c\/strong\u003e\u003cbr\u003eA: The 48F is a 4\" speaker for compact OEM locations; the 58F is a 5.25\" speaker for slightly larger locations. Both share the same Plus One™ glass-fiber cone, PEI dome tweeter, True 4-ohm design, and power handling. The 58F extends slightly lower (55Hz vs 80Hz) due to its larger cone area. Choose based on your vehicle's OEM speaker size.\u003c\/p\u003e","brand":"JBL","offers":[{"title":"Default Title","offer_id":43698235834435,"sku":"JBLSPKS348F","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_48F_HERO_0052_x1_3fa9ac77-cd9a-485f-9f3d-e166f07c7a29.png?v=1787255744","url":"https:\/\/www.trinitycaraudio.com\/products\/jbl-stage3-48f-4-coaxial-car-speakers","provider":"Trinity Car Audio","version":"1.0","type":"link"}