{"product_id":"jbl-4309-high-performance-studio-monitor-bookshelf-speakers-pair-black","title":"JBL 4309 High Performance Studio Monitor Bookshelf Speakers Pair in Black - Less Than Half Price","description":"\u003ch2\u003e\u003cstrong\u003eJBL 4309 Bookshelf Speakers Pair Black - UK Exclusive Less Than Half Price (Limited Time)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(34, 0, 255);\"\u003eWant a high-octane musical experience? Give these JBLs a go\" - What Hi-Fi?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eStudio Heritage Meets Home Excellence\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEngineered and hand-tuned in JBL’s world-famous acoustic research facility in Northridge, California, the JBL 4309 High Performance Bookshelf Speakers embody decades of innovation in professional audio. Compact yet exceptionally capable, the 4309 delivers the authentic “studio monitor” experience in a bookshelf-sized design — offering power, precision and realism that far exceeds expectations.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePatented High-Definition Imaging (HDI™) Horn\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAt the core of the 4309’s remarkable performance is JBL’s \u003cstrong\u003eHigh-Definition Imaging (HDI™)\u003c\/strong\u003e horn technology — the result of extensive research into sound dispersion and acoustic behavior. This patented horn design ensures a \u003cstrong\u003esmooth, balanced frequency response\u003c\/strong\u003e whether you’re listening directly in front of the speakers or off to the side. The result is \u003cstrong\u003econsistent, natural sound reproduction\u003c\/strong\u003e across the entire room, making every seat the best seat.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePrecision Engineered Compression Driver\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e2410H-2 1-inch (25mm) compression driver\u003c\/strong\u003e delivers astonishing clarity in the upper frequencies. Derived from JBL Professional’s D2 transducer series, this driver uses a \u003cstrong\u003elightweight polymer annular diaphragm\u003c\/strong\u003e that reduces mass and distortion. Its unique \u003cstrong\u003eV-shaped geometry\u003c\/strong\u003e minimises breakup modes, enhances transient response, and ensures accurate, fatigue-free listening even at higher volumes. The 2410H-2’s detailed yet smooth presentation brings vocals and instruments vividly to life with studio-level precision.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePowerful 6.5-Inch Pure-Pulp Woofer\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor the low end, the JBL 4309 employs a \u003cstrong\u003e6.5-inch (165mm) cast-frame woofer\u003c\/strong\u003e with a pure-pulp cone and long-throw voice coil. This driver combines the warmth and natural tone of pulp material with JBL’s advanced motor system — featuring a \u003cstrong\u003esymmetrical field design, copper shorting ring, and flux stabilisation\u003c\/strong\u003e. Together, they deliver deep, controlled bass with low distortion and superb transient accuracy, maintaining musical integrity across all genres.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFine-Tuned to Your Space\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 4309 includes an \u003cstrong\u003eUltra High-Frequency tonal adjuster\u003c\/strong\u003e discreetly placed on the front panel beneath the horn. This allows listeners to \u003cstrong\u003etailor the treble response\u003c\/strong\u003e to suit their personal taste or room acoustics. Working in harmony with JBL’s \u003cstrong\u003eadvanced crossover network\u003c\/strong\u003e, which uses premium-grade components like \u003cstrong\u003eair-core inductors, cast wire-wound resistors, and low-ESR film capacitors\u003c\/strong\u003e, the 4309 maintains perfect coherence between drivers while letting you refine the final output to your preference.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eExpertly Crafted Enclosure\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe build quality of the 4309 is every bit as impressive as its sound. Constructed with \u003cstrong\u003e18mm-thick MDF panels\u003c\/strong\u003e and extensive internal bracing, the cabinet provides a rock-solid foundation that eliminates unwanted resonance. The \u003cstrong\u003edual front-firing bass reflex ports\u003c\/strong\u003e are computer-optimised to enhance airflow, extending low-frequency output without introducing port noise. This front-ported design also makes placement near walls or shelves more flexible, maintaining consistent performance in any room layout.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eClassic JBL Aesthetic\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePaying tribute to JBL’s iconic studio monitors of the past, the 4309 features a \u003cstrong\u003esignature blue baffle\u003c\/strong\u003e and comes in two elegant finishes — \u003cstrong\u003eWalnut or Black Walnut satin veneer\u003c\/strong\u003e. The \u003cstrong\u003eBlack version\u003c\/strong\u003e is paired with a sleek \u003cstrong\u003eblack cloth grille\u003c\/strong\u003e, offering a timeless, professional look that complements both modern and vintage interiors. This design isn’t just functional; it’s an unmistakable symbol of JBL’s sound heritage.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOptimised Connectivity\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEach speaker is fitted with \u003cstrong\u003edual gold-plated binding posts\u003c\/strong\u003e, allowing for \u003cstrong\u003ebi-wiring or bi-amping\u003c\/strong\u003e configurations to maximise performance potential. These premium connectors ensure excellent signal transfer and secure, long-lasting cable attachment — ideal for high-fidelity setups.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance That Transcends Size\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDespite its compact dimensions, the JBL 4309 delivers \u003cstrong\u003esound with authority and scale\u003c\/strong\u003e that rivals much larger speakers. The combination of precision drivers, horn technology, and robust cabinet design allows it to produce an \u003cstrong\u003eexpansive soundstage\u003c\/strong\u003e, pinpoint imaging, and powerful dynamics that fill the room effortlessly. Whether used for stereo music listening or as part of a high-end home cinema system, the 4309 offers an unmatched balance of \u003cstrong\u003eaccuracy, energy, and musical emotion\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented High-Definition Imaging (HDI™) horn\u003c\/strong\u003e for smooth, uniform sound dispersion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented 2410H-2 1\" high-frequency compression driver\u003c\/strong\u003e for exceptional clarity and dynamics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.5-inch pure-pulp cone woofer\u003c\/strong\u003e with long-throw voice coil for deep, accurate bass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-mounted tonal adjuster\u003c\/strong\u003e to tailor treble response to your room or taste\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced crossover network\u003c\/strong\u003e using audiophile-grade components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavily braced 18mm cabinet\u003c\/strong\u003e with dual front-firing flared bass ports\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassic JBL monitor styling\u003c\/strong\u003e in Black Walnut satin finish with matching grille\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual gold-plated terminals\u003c\/strong\u003e supporting bi-wire and bi-amp configurations\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDesigned and engineered in Northridge, California\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy Choose the JBL 4309?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe JBL 4309 represents the perfect blend of \u003cstrong\u003estudio engineering and home audio refinement\u003c\/strong\u003e. It offers listeners the signature JBL monitor sound — bold, detailed, and dynamic — in a design that’s compact, elegant, and flexible for any space. Whether you’re an audiophile, music producer, or someone who simply appreciates the finest in sound reproduction, the 4309 delivers performance that speaks for itself.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"table specification-table\" style=\"width: 55.1786%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eType\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e2-Way Bookshelf Loudspeaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eLow Frequency Driver\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e6.5\" (165mm) Pure Pulp Cone Woofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eHigh Frequency Driver\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e2410H-2 1-inch (25mm) Annular Ring, Teonex Diaphragm Compression Driver with Advanced HDI Geometry Horn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eRecommended Amplifier Power\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e25 - 150 WRMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eImpedance\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e4 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eLoudspeaker Sensitivity\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e87 dB\/2.83V\/1m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eFrequency Response\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e42 Hz - 30 kHz (-6 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eCoverage Angle, -6 dB\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e100 Degrees Hor. x 80 Degrees Ver., from 2kHz to 17kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eCrossover Frequency\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e1.6 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eEnclosure Type\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003eH-Braced Front-Ported Bookshelf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eDimensions With Grille\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e16.5” H x 10.25” W x 9” D (419 mm H x 260 mm W x 227 mm D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eControls\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003eUHF Tone Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eInput Type\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003eDual Sets of Gold-Plated Binding Posts With Shorting Straps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eProduct Weight (Each)\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e24.2 lbs. (10.98 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eShipping Weight\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e56.2 lbs. (25.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e5 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 52.4336%; text-align: left;\"\u003eRecommended Stand Height\u003c\/th\u003e\n\u003ctd style=\"width: 46.9063%;\"\u003e24” (609 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan style=\"display: none;\" class=\"body-search-keyword\"\u003eJBL 4309 High Performance Bookshelf Speakers Pair Black, JBL, 4309, High, Performance, Bookshelf, Speakers, Pair, Black, 4309-BK\u003c\/span\u003e\u003c\/p\u003e","brand":"JBL","offers":[{"title":"Black","offer_id":56089767641465,"sku":"200035643","price":949.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/8224\/8931\/files\/jbl-4309-high-performance-bookshelf-speakers-pair-black-black-1200151409.webp?v=1761672836","url":"https:\/\/www.electricshop.com\/products\/jbl-4309-high-performance-studio-monitor-bookshelf-speakers-pair-black","provider":"electricshop.com","version":"1.0","type":"link"}