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JBL 4312G Pair of Speakers – Fully Restored & Serviced – 1 Year Warranty.Condition: ⚠️ Note: Speaker stands are not included. Fully tested, serviced and restored – Excellent sound, great working. With over 2,000 fully serviced and certified vintage receivers/speakers delivered. HQaudios stands as one of the most reputable sources for high-quality audio units. If you're browsing on a mobile device, scroll down and tap the Title to view the complete description.ABOUT:The JBL 4312G is the latest evolution of JBL’s legendary 4310/4311/4312 studio monitor lineage — a modern reinterpretation of the classic West Coast sound. Designed and manufactured in JBL’s Northridge, California facility, the 4312G preserves the iconic front baffle layout and white woofer aesthetic while integrating updated driver technology for improved accuracy and power handling.This is a true 3-way front-ported control monitor delivering dynamic, punchy bass, articulate midrange clarity, and crisp, extended highs. The forward, engaging presentation makes it equally suitable for studio-style critical listening and energetic home hi-fi setups.Fully restored and professionally serviced, this pair is ready for long-term enjoyment and backed by a 1-Year Warranty.Condition: Fully tested, serviced and restoredMODEL: 4312GTYPE: 3 way, 3 driver loudspeaker systemPROTECTION PLAN: 1-Year Warranty IncludedFREE SUPPORT: Must be used before requesting returnSKU: 12QE0102Customer Service:Once your item arrives, if you have questions about how your item functions or proper settings, please CONTACT US.TRADE-IN PROGRAM“If you have any vintage audios (receivers, speakers, cassette, reel to reel...) & want to upgrade with the serviced one, don't hesitate to contact us for the best deal. You only need to pay for the difference between yours & mine....”Note:The actual color of the product may sometimes differ slightly from the photos due to lighting conditions, temperature, and the device used. Some angles in the photos may not fully reflect the product’s condition. Please read the description carefully and feel free to message us if you have any questions.SPECS:Type: 3 way, 3 driver loudspeaker systemFrequency Response: 40Hz to 40kHzPower Handling: 200WCrossover Frequency: 2000, 5000HzImpedance: 6ΩSensitivity: 93dBBass: 1 x 305mm coneMidrange: 1 x 101mm coneTweeter: 1 x 25mm domeEnclosure: bass reflexFinish: blackDimensions: 23.50 × 14.25 × 11.73 inches (597 × 362 × 298 mm)Weight: 39.46 lbs (17.9 kg)KEY FEATURES:3-Way Studio Monitor Design – Woofer, dedicated midrange, and tweeter for full-spectrum accuracyFront-Firing Bass Port – Flexible placement closer to rear wallsMid & High Frequency Level Controls – Adjustable tonal balance to match room acousticsHigh Power Handling (200W max) – Handles dynamic peaks with easeMade in USA (Northridge, CA) – Continuation of JBL’s professional monitor heritageClassic Monitor Aesthetic – Iconic white woofer and black control panelREFURBISHEDThis pair of JBL 4312G speakers has undergone a complete inspection and professional servicing process by HQaudios to ensure reliable operation and optimal performance.1. Cabinet & Cosmetic Service • Cabinets were inspected for structural integrity and stability. • Surface scratches were treated and refinished where necessary to restore a uniform, polished appearance. • The cabinets were cleaned and conditioned to enhance their natural finish and maintain longevity. • Front baffles were carefully detailed while preserving the original markings and aesthetic integrity.2. Grilles & Exterior • Grilles were cleaned and restored to their original condition, or replaced if required. • Badges were secured and aligned to ensure proper placement and a clean look.3. Drivers & Electrical Testing • The woofer, midrange, and tweeter drivers were individually tested to ensure they are operating at peak performance. • Ohm measurements were performed to confirm proper impedance and assess the health of the voice coils.4. Crossover & Internal Inspection • The crossover networks were thoroughly checked for stability and signal balance to maintain frequency integrity. • Internal wiring was inspected, cleaned, and secured to prevent future issues. • The binding posts were cleaned and tested to ensure solid and reliable signal transfer.5. Performance Verification • Channel matching between both speakers was confirmed to ensure stereo balance. • Extended listening tests were performed to verify bass control, imaging, clarity, and tonal balance. • The speakers were found to operate stably, delivering clean, dynamic, and distortion-free performance across the full frequency range.6. Final Check & QC • Appearance: The cabinets, grilles, and overall aesthetic were carefully inspected for any imperfections or signs of wear, ensuring a pristine, like-new look. • Performance: A final listening test confirmed that the sound is well-balanced, dynamic, and free of distortion. • Stability Test: The speakers underwent a 2-hour full functionality test to check for any stability issues or performance drops. • Both the visual condition and acoustic performance passed HQaudios' stringent quality control standards.Result The JBL 4312G speakers are now fully restored, offering an immersive listening experience with powerful bass, detailed midrange, and crisp treble. The cosmetic appearance is pristine, and the speakers perform at their best, providing reliable and consistent audio for years to come.⚠️ Note: Speaker stands are not included.✅ Backed by 1-Year Warranty (repair or replacement)Suggested Pairings:The JBL 4312G performs best with amplifiers that offer strong current delivery and clean headroom.Recommended pairings:Pioneer SX-980 – Classic silver-face warmth with dynamic punchSansui AU-717 – Excellent control and rich midrangeMcIntosh MA6200 – Smooth yet authoritative presentationYamaha A-S1200 – Clean, detailed, high-current modern pairingFor vinyl setups, pairing with a high-quality turntable and MM phono stage will highlight the 4312G’s engaging midrange and impactful low end.🎁 GET A $100 VOUCHER INSTANTLY WHEN YOU BUY A COMBO!PACKAGING & SHIPPINGSecure Packaging:Nylon wrap and sealed inner cartonCustom EPE foam corners to protect edgesDouble-wall outer box for shock resistancePlastic straps + handling labels to ensure safe transitShipping Details:Dispatch Time: Ships within 3 business daysCarrier: UPS Ground (tracked & insured)Signature Required: Yes (as buyer's request)Transit Time: Typically 3–7 business days (USA)International Shipping:We offer global delivery through the eBay International Shipping Program. eBay handles customs, duties, and tracking.📦 Note: Packaging may vary slightly depending on unit size or model, but safety and protection are always our top priority.--------------------------------------------------------------------------------Thank you for viewing our listing! Please kindly ensure you read all the provided information carefully!We strive to describe all items honestly and accurately. However, as human beings, we may occasionally make mistakes. If you have any doubts or encounter conflicting information, please inquire before purchasing or making an offerWe kindly request that all buyers give us the opportunity to address any issues.Payment Policy:All buyers are required to make immediate payment or contact us within 24 hours to arrange payment, with payment received within 3 days. Offers submitted under the Best Offer feature are considered binding agreements and require immediate payment upon acceptance. Failure to adhere to these terms may result in substitution or cancellation of the transaction.Payments must be accompanied by a valid shipping address listed as Confirmed. Payments with invalid shipping addresses will be refunded and may incur a processing fee deducted from the refund amount.Shipping Policy:This is for local pickup or we will ship it very carefully so that it arrives in good shape like it is now. Our customers' satisfaction means everything to us. Once you get this item, feel free to contact us if it has any problems! I will try to answer any questions that you may have in a timely fashion.All shipments are processed within 03 business days of paym
The timing is a bit important here because the 4312G is still a current-model JBL classic, not a long-discontinued oddity, so you’re paying close to modern retail rather than scoring a vintage bargain. New, this pair launched at US$2,500 per pair, and a used ask of US$2,999 is above new pricing, so it’s ambitious rather than fair for the used market.
That said, the 4312G is well regarded for exactly the kind of lively, punchy, forward JBL presentation enthusiasts buy these for, with a 12-inch woofer, 5.25-inch mid, and 1-inch tweeter in the familiar studio-monitor layout. If the pair is genuinely mint, complete, and from a careful owner, the appeal is the condition and convenience more than the price; at this number, I’d want either a truly exceptional example or to see if the seller has included stands, boxes, and proof of light use.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
JBL traces its roots to 1946, when pioneering audio engineer James Bullough Lansing founded the company in Los Angeles, California, initially as James B. Lansing Sound, Incorporated. A veteran of loudspeaker design from earlier ventures like the Lansing Manufacturing Company and collaborations on Hollywood's first practical cinema systems, Lansing infused JBL with his relentless pursuit of acoustic clarity and fidelity. Though he passed away in 1949 amid financial strains, the brand endured under new leadership, accelerating in 1969 with acquisition by Harman International—now under Samsung—fueling global expansion and innovation.
JBL excels across professional and consumer audio realms, renowned for its loudspeakers that dominate studios, touring rigs, cinemas, and home setups. Iconic models like the D-130 woofer, Paragon stereophonic system, and L-100 Century defined eras of high-output sound, while modern lines span portable Bluetooth speakers, wireless headphones, soundbars, and pro monitors. The brand prioritizes robust transducers, advanced horns, and diamond-surround tech over niche components like turntables, DACs, or cables.
Positioned as a mid-tier powerhouse with pro-grade heritage, JBL commands respect among discerning buyers for delivering punchy, reliable performance at accessible prices, bridging live-event energy and home listening without high-end esoterica. Its vintage icons draw collectors, yet contemporary ubiquity in arenas and everyday gear cements market dominance for those valuing scale and excitement over boutique refinement.
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