JBL 4312A Studio Monitor Pair of Speakers 

JBL 4312A is a legendary studio monitor speaker built from JBL’s professional heritage—famous for its lively dynamics, strong punch, and crystal-clear detail. This model delivers tight bass impact, a forward and natural midrange, and smooth highs that make vocals and instruments feel incredibly present.
With its iconic white-cone woofer and classic front-firing design, the 4312A is easy to place in many rooms while still delivering wide imaging and an energetic, studio-style listening experience.

• Condition: Excellent – Serviced, tested, and cleaned
• MODEL: 4312A
• TYPE: 3-way studio monitor loudspeaker system
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• SKU: 12QE0084

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 may differ slightly from photos due to lighting conditions and the device used. Some angles may not fully reflect the product’s condition. Please read the description carefully and message us anytime.

SPECS:

• Type: 3 way, 3 driver loudspeaker system
• Frequency Response: 45Hz to 20kHz
• Power Handling: 100W
• Recommended Amplifier: 10 to 300W
• Crossover Frequency: 1500, 7000Hz
• Impedance: 8Ω
• Sensitivity: 91dB
• Bass: 1 x 300mm aquaplas cone
• Midrange: 1 x 130mm felted paper cone
• Tweeter: 1 x 25mm pure titanium dome
• Enclosure: bass reflex
• Dimensions: 23.5 × 14.3 × 11.7 in (H × W × D)
• Weight: 52 lbs

KEY FEATURES:

• Classic JBL Studio Monitor Sound – Dynamic, engaging, and highly detailed
• Front-Firing Bass Design – Strong low-end punch with flexible placement
• 3-Way Driver System – Clear separation and balanced response
• Iconic White Cone Woofer Look – Timeless JBL pro aesthetic
• Collector-Preferred Vintage Model – Loved by audiophiles worldwide

REFURBISHED:

This pair of JBL 4312A speakers has been professionally serviced and thoroughly verified to ensure correct electrical performance and excellent sound quality.

• Impedance (Ohm) Measurement: Each speaker and individual driver was measured for impedance, confirming correct ohm values and stable electrical behavior.
• Signal & Sound Testing: Audio signal testing was performed to ensure clean output, stable performance, and balanced sound between both speakers.
• Driver Inspection: Woofer, midrange, and tweeter were inspected for proper movement, alignment, and consistent output with no abnormal noise or distortion.
• Cabinet & Cosmetic Detailing: Cabinets were cleaned and detailed, maintaining a clean appearance while preserving the original vintage character and finish.
• Controls & Terminals: Rear level controls and speaker terminals were checked to ensure smooth adjustment and secure connections.
• Final Listening Test: The speakers were tested as a matched pair to confirm proper stereo imaging, tonal balance, and even output across both cabinets.

Result:

These JBL 4312A monitors deliver the bold, punchy, studio-style sound they are famous for, with verified impedance readings, clean signal response, and consistent performance. Ready to enjoy immediately.

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

SUGGESTED PAIRINGS:

• Amplifiers: Marantz 2270, Sansui AU-717, Yamaha CA-1000
• Sources: Technics SL-1200MK2, Revox B77, Nakamichi BX-300

PACKAGING & SHIPPING

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.

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