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JBL 4311 Control Monitor Pair of Speakers – Fully Serviced & Restored – 1Yr WarrantyCondition: Excellent – fully tested and serviced.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.ABOUTThe JBL 4311 is not just a speaker—it’s a piece of recording history. Originally designed as a studio control monitor, the 4311 was built to tell the truth. No coloration, no exaggeration—just raw, accurate sound that engineers could trust when mixing records that would later be heard around the world.And that honesty is exactly what makes the 4311 so special today. When you listen to it, you’re not just hearing music—you’re hearing it the way it was intended to be heard in the studio. Tight, punchy bass. Forward, detailed midrange that brings vocals right into the room. And crisp highs that cut through cleanly without harshness.There’s an energy to the 4311 that feels alive—fast, direct, and engaging. It doesn’t sit back and relax. It pulls you into the music, making every track feel immediate and real.At HQaudios, this pair has been carefully restored to preserve that original studio DNA while ensuring stable, reliable performance for modern listening. If you’re looking for a true vintage JBL monitor experience, this 4311 pair is ready and available at HQaudios.MODEL: JBL 4311TYPE: 3-Way Control Monitor Speakers (Pair)PROTECTION PLAN: 1-Year Warranty IncludedFREE SUPPORT: Must be used before requesting returnSKU: 1TOL0047Importance Note: THIS PAIR WILL BE SHIPPED WITHOUT STANDSCustomer 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 questionsSPECSType: 3 way, 3 driver loudspeaker systemFrequency Response: 45Hz to 15kHzPower Handling: 75WCrossover Frequency: 1500, 6000HzImpedance: 8ΩSensitivity: 91dBBass: 1 x 300mm long throwMidrange: 1 x 130mm coneTweeter: 1 x 36mm direct radiatorEnclosure: bass reflexGrille: black fabricFinish: textured gray, oiled walnutDimensions (W × H × D): 23.50 × 14.25 × 11.73 inchesWeight: 41.89 lbsYear: 1978KEY FEATURESStudio monitor heritage with accurate, forward sound signature3-way design with 12” woofer, midrange driver, and tweeterPunchy, controlled bass with excellent transient responseHighly detailed midrange, ideal for vocals and rock musicClassic JBL blue baffle with walnut cabinet designAdjustable front L-pad controls for tonal tuningDon’t miss the chance to add this classic to your system!!!REFURBISHEDThese JBL 4311 speakers have been fully refurbished and carefully restored to deliver authentic JBL studio monitor performance along with long-term stability, while preserving their original character and vintage appeal.Restoration & Technical ServiceWoofer inspection & restoration: Original 12-inch woofers were inspected, tested, and serviced to ensure proper cone movement, tight suspension, and controlled, punchy bass response.Midrange & tweeter serviced: Mid and high-frequency drivers were cleaned, tested, and matched to ensure clear, distortion-free output with accurate tonal balance.Crossover service: Original crossover networks were inspected and serviced to restore proper frequency distribution, clarity, and coherence.L-pad controls cleaned: Front level controls were cleaned and treated to ensure smooth, noise-free adjustment without static or dropouts.Internal wiring & connections checked: All internal wiring and solder joints were inspected and reinforced to ensure stable, noise-free signal flow.Cabinet & Cosmetic WorkCabinets detailed: Walnut veneer cabinets were professionally cleaned and conditioned, preserving the classic vintage look.Grilles & cosmetic parts: The speakers are fitted with new black grilles, maintaining the classic JBL look and providing a clean, well-presented appearance.Condition Notes (Important)Minor cosmetic wear consistent with age may be present.These do not affect performance or structural integrity.Overall condition is clean, stable, and true to vintage character.Testing & Final ResultSound tested extensively: Confirmed punchy bass, forward and detailed midrange, and crisp highs with excellent stereo imaging.Stable operation: Verified matched pair performance and consistent output across extended listening sessions.ResultAfter refurbishment, this JBL 4311 pair delivers the true studio monitor experience—fast, dynamic, and highly engaging sound that brings recordings to life.More importantly, the speakers are now fully serviced, stable, and ready for daily listening or collection use.Available at HQaudios, this is a rare chance to own a properly restored JBL 4311—built for those who want to hear music exactly as it was meant to be heard.SUGGESTED PAIRINGSMarantz 2230 / 2270 – Warm balance to complement the forward JBL soundSansui 9090 / AU-717 – Strong dynamics with controlled low-endPioneer SX-1050 / SX-1250 – Full-range, powerful pairingMcIntosh MA series – Clean, authoritative control with refined detail 🎁 GET A $100 VOUCHER INSTANTLY WHEN YOU BUY A COMBO!PACKAGING & SHIPPINGSecure Packaging:Each unit is carefully packed using: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 payment, whenever possible. In the event of stock issues causing a delay, customers will be promptly notified, and alternative shipment arrangements will be made. Customers are responsible for any charges incurred due to failed delivery attempts or re-delivery

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About Monitor Audio

Monitor Audio, a British hi-fi mainstay, traces its origins to 1972 when founder Mo Iqbal established the company in a modest factory near Cambridge, England. Starting with hands-on loudspeaker assembly in a garage-like setting, it quickly professionalized, moving to Rayleigh, Essex, in 1976 for in-house manufacturing. This heritage of meticulous British engineering has endured through expansions, including a 2004 shift of production to China while retaining design leadership in Essex, alongside strategic acquisitions like Roksan in 2016 and Blok in 2019.

The brand excels in loudspeakers across diverse categories, from high-fidelity two-channel stereo models to advanced home cinema systems, architectural installations, outdoor speakers, and lifestyle solutions. Signature innovations like the patented C-CAM Gold Dome tweeters, introduced in the 1980s and continually refined, define its sound. Complementing these are amplifiers, streamers, and integrated audio systems, reflecting a broad portfolio that prioritizes proprietary driver technologies and precise enclosure design over peripheral gear like turntables or headphones.

Positioned as a mid-to-high-end powerhouse, Monitor Audio commands respect for delivering audiophile-grade performance at accessible price points, blending relentless innovation with timeless British craftsmanship. Over five decades, it has solidified its status as a global juggernaut, appealing to discerning buyers seeking refined, dynamic sound without boutique exclusivity or vintage nostalgia.

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