Excellent JBL 4343 Vintage Studio Monitor Speakers – Fully Restored – 1-Year Warranty

• CONDITION: Excellent – Serviced, tested, and cleaned
• MODEL: JBL 4343
• TYPE: 4-Way Studio Monitor Speakers
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• SKU: 12TO0014
• ⚠️Note: Speaker stands are not included.

Excellent JBL 4343 Vintage Studio Monitor Speakers

Condition: Fully tested – Excellent sound, serviced

ABOUT:

JBL 4343 speakers is one of the most legendary 4-way studio monitors from the 1970s, built for professional recording environments and prized by audiophiles worldwide. Featuring a massive 15-inch woofer, dedicated mid-bass driver, horn-loaded compression driver, and ultra-high-frequency slot tweeter, the 4343 delivers reference-level performance with dynamic range, accuracy, and scale. 

With its imposing presence and unmatched clarity, it remains a flagship monitor for collectors and serious listeners.

⚠️Note: Speaker stands are not included.

• CONDITION: Excellent – Serviced, tested, and cleaned
• MODEL: JBL 4343
• TYPE: 4-Way Studio Monitor Speakers
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• SKU: 12TO0014

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.

TECHNICAL SPECIFICATIONS:

• Configuration: 4-Way Floorstanding Monitor
• Woofer: 15″ JBL 2231A
• Midbass: 10″ JBL 2121
• High Frequency: JBL 2420 compression driver + acoustic horn
• Ultra-High Frequency: JBL 2405 slot tweeter
• Crossover Frequencies: 300Hz / 1.25kHz / 9kHz
• Frequency Response: 35Hz – 20kHz
• Sensitivity: 93dB / 1W / 1m
• Impedance: 8 Ohms
• Power Handling: 100W RMS
• Dimensions (each): 42.5″ H × 25.25″ W × 18.5″ D
• Weight (each): Approx. 143 lbs

KEY FEATURES:

• Massive 15-Inch Woofer – Deep, powerful bass with studio-grade accuracy
• Dedicated Mid-Bass & Horn Driver – Smooth midrange and lifelike vocal presence
• Ultra-High-Frequency Slot Tweeter – Extended sparkle and detail
• Studio Heritage – Designed for professional mastering and monitoring
• Adjustable L-Pads – Fine-tune high and midrange levels to your room
• Classic JBL Design – Iconic blue baffle with walnut veneer cabinets
• Collector’s Favorite – A true grail piece for vintage speaker enthusiasts

REFURBISHED

These JBL 4343 Studio Monitors underwent a complete restoration, covering every component for both authenticity and long-term reliability:

Drivers & Acoustic Components

• Woofers: Old foam surrounds removed, cones cleaned and re-centered. Refoamed using JBL-spec treated surrounds. Voice coils inspected under magnification, dust caps re-sealed where needed.
• Midrange: Suspension tested for proper compliance, diaphragm inspected for cracks or stiffness, sweep-tested to verify output.
• Tweeter: Diaphragm checked, ferrofluid cleaned, phase plug alignment verified.
• Super Tweeter: Diaphragms preserved where possible, cleaned and centered, sweep-tested for distortion.

Crossover Networks

• All electrolytic capacitors replaced with audiophile-grade film capacitors (Mundorf, Jantzen, or equivalent).
• Internal wiring cleaned and re-soldered with silver solder.
• Inductors measured to ensure factory values are maintained.
• Resistors tested and replaced if outside tolerance.
• Protective mesh screens reinstalled over crossover boards.

Attenuators & Controls

• L-pads for mid and high drivers disassembled, de-oxidized, lubricated.
• Resistance curves verified for smooth and even adjustment.
  

Cabinet & Finish

• Walnut veneer sanded, repaired at chipped edges, refinished with hand-rubbed oil/clear lacquer.
• Baffles restored to factory-correct JBL studio blue paint with durable matte finish.
• Corners and edges re-sealed to prevent veneer lifting.
• Rear connection panels cleaned, binding posts re-tensioned.

Grilles & Cosmetics

• Original grille frames cleaned and restored, with grille cloth carefully washed, re-stretched, and re-fitted.
• JBL badges polished, and rear serial tags remade faithfully based on the original design.
• Overall cosmetic restoration ensures a vintage-correct look while presenting like new.

Testing & Measurements

• Ohm check: Each driver measured individually with a calibrated meter, system impedance verified across terminals.
• Frequency sweep: Full sweep 20Hz – 20kHz to confirm driver integration and crossover alignment.
• Power handling: Tested at increasing levels for 2+ hours to confirm stability without distortion or overheating.
• Listening session: Evaluated with jazz, rock, and classical recordings to ensure authentic JBL 4343 sound—deep bass, articulate mids, and sparkling highs.

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

SUGGESTED PAIRINGS:

• Marantz 2330 or 2600 Receiver – Classic warm synergy with JBL monitors
• Kenwood KR-9600 Receiver – Monster receiver to handle the power
• Luxman C-05 + M-05 – High-end Japanese pre/power combo for precision control
• McIntosh MC2105 or MC2205 Amplifiers – Legendary American power pairing
• TEAC X-1000R Reel-to-Reel – True studio-grade analog source

👉 Perfect for studios, collectors, and audiophiles who want the legendary JBL 4343 sound and presence.

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

PACKAGING & SHIPPING:

Secure 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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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 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 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!