[Original Box+Manual]Pair of JBL 4311B Speakers – Fully Restored -1Year Warranty

• CONDITION: Excellent – ​​Serviced, tested, and cleaned
• MODEL: 4311B
• TYPE: 3-way studio monitor loudspeaker system
• PLAN PROTECTION: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• Free 2 Pairs Colorful Grids – Choose 2 Fabric Colors
• SKU: 12QE0085

[Original Box+Manual]Pair of JBL 4311B Speakers

ABOUT:

JBL 4311B is one of the most iconic studio monitor loudspeakers ever produced by JBL. Originally developed for professional recording environments, the 4311B became legendary for its forward, lively presentation, punchy low end, and clear midrange articulation.

Its compact form factor, front-firing bass design, and unmistakable studio voicing make it equally appealing for home listening and serious audio collections. The inclusion of the original factory box significantly enhances both collectability and value.

• CONDITION: Excellent – ​​Serviced, tested, and cleaned
• MODEL: 4311B
• TYPE: 3-way studio monitor loudspeaker system
• PLAN PROTECTION: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• Free 2 Pairs Colorful Grids – Choose 2 Fabric Colors
• SKU: 12QE0085

SPECS:

• Type: 3 way, 3 driver loudspeaker system
• Frequency Response: 45Hz to 15kHz
• Power Handling: 75W
• Crossover Frequency: 1500, 6000Hz
• Impedance: 8Ω
• Sensitivity: 91dB
• Bass: 1 x 300mm long throw
• Midrange: 1 x 130mm cone
• Tweeter: 1 x 36mm direct radiator
• Enclosure: bass reflex
• Dimensions:23.50″ × 14.25″ × 11.73″
• Weight: 46.30 lbs
• Year: 1979

KEY FEATURES:

• Original Factory Box Included, A rare and highly desirable detail that reflects careful ownership, adds strong collector appeal, and makes this pair stand out
• Legendary JBL Studio Monitor Sound, Dynamic, engaging, and detailed
• Front-Firing Bass Driver, Flexible placement options
• Studio Heritage Design – Timeless JBL professional aesthetic

REFURBISHED:

This pair of JBL 4311B speakers has undergone a thorough service and verification process, focusing on electrical accuracy, driver integrity, and overall sonic performance.

• Impedance (Ohm) Measurement: Each speaker and individual driver was measured for impedance, confirming correct ohm values ​​and ensuring proper electrical behavior and system compatibility.
• Driver Inspection & Performance Check: All drivers (woofer, midrange, and tweeter) were carefully inspected to confirm proper movement, alignment, and consistent output without distortion or mechanical noise.
• Signal Testing: Audio signal testing was performed using music and test tones to verify clean output, stable response, and balanced sound between both speakers.
• Cabinet Inspection & Detailing: Cabinets were inspected for structural integrity, then cleaned and detailed, maintaining their original finish and classic studio appearance.
• Terminal & Connection Service: Speaker terminals were checked, cleaned, and secured to ensure reliable signal transfer and long-term connection stability.
• Stereo Matching & Final Listening Test: The speakers were tested as a matched pair, confirming proper stereo imaging, tonal balance, and consistent performance across both channels.

Result:

These JBL 4311B studio monitors deliver the energetic, punchy, and engaging sound they are famous for, with verified electrical measurements and consistent performance. Combined with the original factory box, this pair represents an excellent opportunity for both collectors and serious listeners.

✅ Backed by 1-Year Warranty (repair or replacement)

SUGGESTED PAIRINGS

Marantz 22xx Series Receivers – Warm musical synergy

Pioneer SX Series Receivers – Clean power with excellent control

Sansui Integrated Amplifiers – Smooth yet dynamic presentation

🎁 GET A $100 VOUCHER INSTANTLY WHEN YOU BUY A COMBO!

PACKAGING & SHIPPING:

Speakers will be securely packed using the original factory box, with additional protective materials to ensure safe transit. Tracking will be provided.

PACKAGING & SHIPPING

Package Includes

Pair of JBL 4311B Studio Monitor Speakers (Original box)

Manual

Each unit is carefully packed using:

Nylon wrap and sealed inner carton

Custom EPE foam corners to protect edges

Double-wall outer box for shock resistance

Plastic straps + handling labels to ensure safe transit

Shipping Details

Dispatch Time: Ships within 3 business days

Carrier: 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.

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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 offer

We 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 include 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.

Return Policy

Our Free Support service must be utilized before requesting any return, for any reason.

Items may be exchanged within 30 days if defective or not as described, with a full refund of the purchase price if an exchange is unavailable.

If due to seller error, we will issue a prepaid return label or arrange for reimbursement of return shipping expenses as per this policy, not exceeding the original shipping cost.

The address for returning shipment: 10851 Capital Ave, Garden Grove CA 92843

Returned items may require inspection before determining fault. The item must be received in its original, unaltered condition with all original packaging. Electronic items cannot be opened or tampered with; sealed items must remain sealed, and “Mint” items must remain in “Mint” condition.

No returns will be accepted without first contacting us for Free Support, troubleshooting, or evaluation.

Warranty policy:

The warranty covers technical parts for up to 12 months from the date of receipt, provided there is valid evidence and the item remains sealed, unaltered, and has not been disassembled or internally inspected/repaired. Please note that shipping costs for warranty service will be the seller’s responsibility if the item is found to be defective.

⚠ Important Notice:

To ensure a smooth warranty process, we kindly request that you record a video while unboxing your package upon delivery. Any claims related to product damage or warranty service must be supported by clear video and photographic evidence. Please submit all required documentation to the official HQaudios email for prompt assistance.

***Failure to provide sufficient information as per our guidelines may result in the rejection of your request.

If you have any issues or dissatisfaction with our services, products, or policies, please refrain from leaving negative feedback immediately. Instead, contact us right away so we can provide you with the best possible solution and have the opportunity to improve our service quality!

Thank you for being a valued customer & Thanks for looking!