Outstanding JBL 4312 MKII Pair of Speakers – Serviced –1 Year Warranty

Condition: Fully tested – Excellent sound, serviced

ABOUT:

JBL 4312 MKII speakers continue JBL’s long-standing legacy of professional-grade studio monitors, directly descended from the iconic JBL 4310 and 4311 series. 

Engineered for accuracy, dynamics, and musical realism, this 3-way speaker system features a 12-inch white-cone woofer, a 5-inch midrange, and a 1-inch titanium dome tweeter, delivering the signature JBL sound — clear, forward, and powerful. Ideal for studio reference or audiophile home use, the 4312 MKII captures the spirit of JBL’s golden era with modern refinement.

• Condition:Excellent – Serviced, tested, and cleaned
• MODEL: JBL 4312 MKII
• TYPE: 3-Way Studio Monitor Loudspeaker System
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• SKU: 12QE0043

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:

• Description: 3-way Studio Monitor Loudspeaker
• Low-frequency Transducer: 5.25-inch (133mm) pure pulp
• white cone woofer
• Mid-frequency Transducer: 2-inch (50mm) pure pulp midrange
• High-frequency Transducer: 0.75-inch (19mm) titanium dome tweeter
• Design: Bass-reflex via front-firing port
• Frequency Response: 55Hz – 50kHz (-6dB)
• Sensitivity: 92dB (2.83V/1m)
• Power Handling: 75 Watts RMS
• Crossover Frequencies: 7kHz, 12kHz
• Impedance: 6 Ohm
• Controls: MF and HF attenuators
• Connectors: Gold-plated five-way binding posts
• Dimensions (H x W x D): 11.8 x 7.1 x 7.1 inches (300 x 180 x 180mm)
• Weight: 8.8 lbs (4.0kg)
• Finish: Black Ash with Black Grille, Walnut with Blue Grille 

KEY FEATURES:

• Heritage Sound – Successor to the iconic 4311 and 4312 monitors
• Titanium Tweeter – Smooth and extended high frequencies
• Front-Ported Enclosure – Allows flexible room placement
• Accurate Studio Response – Perfect for mixing or home hi-fi use

REFURBISHED:

This pair of JBL 4312 MKII speakers has been completely refurbished to restore their studio monitor performance and vintage appeal.

Driver Service & Testing:

• All drivers (woofer, midrange, tweeter) were removed, inspected, and individually tested.
• The woofers were refoamed with new high-quality surrounds, ensuring deep and accurate bass.
• Midrange and tweeter units were verified to work within original factory specifications.

Crossover Network:

• The crossovers were recapped with premium capacitors, bringing back clarity and tonal accuracy across the frequency spectrum.

Ohm Verification:

• Impedance of each driver was carefully measured to confirm proper balance, guaranteeing matched stereo performance.

Cabinet & Grilles:

• Cabinets were cleaned, detailed, and polished while preserving the walnut veneer finish.
• The blue front baffles were refreshed, keeping their authentic studio look.
• Grilles were deep-cleaned, with frames and cloth restored, and the JBL logo badge fitted for a true original-style appearance.

Controls & Connectors:

• All L-pads were serviced for smooth, noise-free adjustment.
• Rear connectors were tightened and tested for solid and reliable connections.

Final Testing: After reassembly, both speakers were tested with music tracks and frequency sweeps, followed by a 2–3 hour continuous run to confirm stability.

Result:
The JBL 4312 MKII now delivers authoritative bass, articulate mids, and crisp highs — true to its original studio monitor heritage and ready for long-term reliable use.

⚠️ Note: Speaker stands are not included.

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

SUGGESTED PAIRINGS:

• Pioneer SX-1050 Receiver – Dynamic, powerful drive
• Marantz 2330 Receiver – Warm and musical tone
• Luxman M-05 Power Amplifier – Smooth, detailed response
• Kenwood KR-9600 Receiver – Vintage power and precision

👉 Perfect for studio engineers, audiophiles, and collectors who want true JBL performance and vintage studio accuracy in one restored package.

🎁 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.