JBL 4311 Vintage Studio Monitor Speakers – Restored & Tested – 1-Year Warranty

JBL 4311 Control Monitor Pair of Speakers – Fully Serviced & Restored – 1Yr Warranty

Condition: 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.

ABOUT

The 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 4311
• TYPE: 3-Way Control Monitor Speakers (Pair)
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return

Importance Note: THIS PAIR WILL BE SHIPPED WITHOUT STANDS

Customer 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 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
• Grille: black fabric
• Finish: textured gray, oiled walnut
• Dimensions (W × H × D): 23.50 × 14.25 × 11.73 inches
• Weight: 41.89 lbs
• Year: 1978

KEY FEATURES

• Studio monitor heritage with accurate, forward sound signature
• 3-way design with 12” woofer, midrange driver, and tweeter
• Punchy, controlled bass with excellent transient response
• Highly detailed midrange, ideal for vocals and rock music
• Classic JBL blue baffle with walnut cabinet design
• Adjustable front L-pad controls for tonal tuning

Don’t miss the chance to add this classic to your system!!!

REFURBISHED

These 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 Service

• Woofer 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 Work

• Cabinets 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 Result

• Sound 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.

Result

After 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 PAIRINGS

• Marantz 2230 / 2270 – Warm balance to complement the forward JBL sound
• Sansui 9090 / AU-717 – Strong dynamics with controlled low-end
• Pioneer SX-1050 / SX-1250 – Full-range, powerful pairing
• McIntosh 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 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

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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.

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!