JBL 4412 Pair Of 150W Studio Monitor Speakers - Restored - 1-Year Warranty

Professionally Restored by HQaudios - Fully Tested - Backed by Our 1-Year Warranty.

The JBL 4412 is a vintage 3-way studio monitor from JBL's professional 4400 monitor series, introduced during the era when JBL control-room monitors were a fixture in recording studios across America.

The 4412 carries the design language that made the 4400 series famous: a 12-inch low-frequency driver, a dedicated 5-inch midrange, and JBL's 035Ti 1-inch titanium dome tweeter, arranged on a mirror-imaged front baffle with front-panel Mid and High Frequency Level controls. This combination of true studio-monitor accuracy and classic JBL dynamics is why the 4412 remains highly regarded among both vintage audio enthusiasts and home-studio listeners.

This pair has been professionally restored, serviced, and tested by HQaudios while preserving the original engineering and vintage character of the JBL 4412.

1. KEY HIGHLIGHTS

• Authentic JBL 4412 Studio Monitor Speakers - Mirror-Imaged Pair
• JBL 128H-1 12" Woofer + 104H-2 5" Midrange + 035Ti 1" Titanium Dome Tweeter
• Front-Ported Enclosure with Front-Panel Mid / High Frequency Level Controls
• 150W Continuous Power Capacity - True Studio Monitor Accuracy
• Professionally Restored and Serviced by HQaudios
• Drivers, Crossovers, Level Controls, and Connections Inspected and Tested
• Real-World Stereo Operational and Listening Test Performed
• Carefully Packed for Safe Delivery
• 1-Year HQaudios Warranty

2. SOUND CHARACTER

The JBL 4412 delivers the balanced, revealing presentation it was designed for: tight, well-controlled bass from the 12-inch woofer, a clear and articulate midrange from the dedicated 5-inch driver, and detailed, extended highs from the titanium dome tweeter.

Compared with typical home speakers of the era, the 4412 leans toward accuracy rather than coloration - imaging is precise thanks to the mirror-imaged baffles, and dynamics remain composed at both low and high listening levels. The front-panel level controls allow the midrange and high frequencies to be tailored to the room and personal taste.

This character makes the 4412 equally at home for critical listening, mixing, jazz, rock, vocals, and vinyl playback in a properly matched vintage system.

3. COSMETIC CONDITION

This pair is in Excellent vintage cosmetic condition, with only light signs of age and previous use.

• Front Baffles: clean black finish; badges and control-panel markings clear and legible. The orange JBL badge on one baffle shows light surface wear.
• Cabinets / Veneer: walnut veneer is clean and consistent on both cabinets, with no significant chips or scratches visible.
• Drivers: woofer cones, surrounds, midrange cones, and tweeter mesh present in clean condition.
• Grilles: original black grilles included and in very good shape.
• Rear Panels / Terminals: clean, with clearly labeled connection panels.

Please review all photos carefully, as they are part of the description.

4. HQAUDIOS RESTORATION & TESTING PROCESS

Before Restoration:

This pair of JBL 4412 monitors was carefully inspected upon arrival to evaluate its overall mechanical, electrical, acoustic, and cosmetic condition. The inspection covered the low-frequency, midrange, and high-frequency drivers, surrounds, voice coils, crossover networks, Mid and High Frequency Level controls, speaker terminals, internal wiring, cabinet integrity, and the front port openings. Each speaker was evaluated individually for driver operation, electrical continuity, and overall acoustic performance.

During Restoration:

Based on the inspection results, this pair was restored according to HQaudios' technical standards while preserving the original design and operating characteristics of the 4412. The drivers, crossover networks, level controls, speaker terminals, and connection points were serviced and verified for quiet, reliable operation. The cabinets, veneer, baffles, and grilles were carefully cleaned and detailed to preserve the authentic vintage character of the JBL 4412.

After Restoration:

After restoration was completed, this pair underwent comprehensive functional testing under real operating conditions, including individual driver operation, frequency sweep, crossover integration, level-control operation, channel matching, and terminal connections. Both speakers were then operated together as a stereo pair through an extended real-world listening test. Only after completing HQaudios' restoration and testing process was this pair approved and prepared for its next owner.

5. SPECIFICATIONS

• Brand: JBL
• Model: 4412 Studio Monitor
• Type: 3-Way Front-Ported Studio Monitor - Mirror-Imaged Pair
• Low Frequency Driver: JBL 128H-1, 12 inch
• Midrange Driver: JBL 104H-2, 5 inch
• High Frequency Driver: JBL 035Ti, 1 inch Titanium Dome
• Nominal Impedance: 8 Ohms
• Power Capacity: 150W Continuous Pink Noise
• Frequency Response: 45Hz - 20kHz (+/-2dB)
• Sensitivity: 90dB / 1W / 1m
• Crossover / Network: Internal passive network with front-panel Mid and High Frequency Level controls
• Dimensions: Approx. 23.5 x 14.25 x 11.25 in (597 x 362 x 286 mm) per speaker
• Weight: Approx. 46 lbs (21 kg) per speaker
• Condition: Professionally Restored / Serviced / Tested
• Warranty: 1-Year HQaudios Warranty

6. WHAT IS INCLUDED

• Pair of JBL 4412 Studio Monitor Speakers (mirror-imaged)
• Original black speaker grilles
• Wooden display bases as shown in the photos

Only the items clearly shown in the photos or specifically listed here are included.

7. VIDEO TEST & SOUND DEMO

If you would like to see or hear this pair of JBL 4412 monitors in operation before purchase, please contact us directly. When available, we are happy to provide additional photos, close-up images, operational videos, or sound demonstrations.

You are also welcome to visit the HQaudios YouTube channel to explore restoration projects, product demonstrations, and listening sessions featuring professionally restored vintage audio equipment.

8. SUGGESTED PAIRING

The JBL 4412 works especially well with amplification that offers clean, stable power into its 8-ohm load.

• Marantz 2265B / 2270 - Classic Marantz warmth balances the 4412's studio accuracy, giving a full-bodied, easygoing presentation with plenty of clean power.
• Pioneer SX-950 / SX-1050 - Strong, dynamic power delivery that lets the 12-inch woofer show its control and punch - an excellent match for rock, jazz, and vinyl.
• Sansui AU-717 / AU-919 - Clean, tightly controlled amplification that complements the 4412's monitor-grade accuracy for critical listening.
• McIntosh MC2105 / MA5100 - Studio-level refinement and effortless headroom for the most demanding listening sessions.

Final amplifier selection should consider the condition of the equipment, the power levels used, and your listening habits to ensure proper system matching.

9. BASIC USE GUIDE

• Use amplification appropriate for the 4412's 8-ohm load and power handling.
• Verify speaker wiring and polarity before powering on.
• Avoid amplifier clipping or sustained excessive volume.
• Do not block the front port openings, and protect the exposed drivers during handling.
• Contact HQaudios if you need assistance with setup or amplifier matching.

10. TRADE-IN PROGRAM

Do you have vintage audio equipment you'd like to trade in? HQaudios welcomes trade-ins on receivers, amplifiers, speakers, cassette decks, reel-to-reel decks, turntables, and other classic audio components. Simply send us photos and basic information about your equipment. Our team will review your items and discuss available trade-in options.

11. BUILD YOUR VINTAGE SYSTEM / COMBO DISCOUNT

Looking to build a complete vintage audio system? HQaudios can help match this pair of JBL 4412 monitors with compatible vintage receivers, amplifiers, turntables, and tape decks.

Save $100 when purchasing this pair together with a qualifying restored vintage audio component from HQaudios. Please contact us before purchase so we can confirm availability and prepare a combined offer.

12. SHIPPING & PACKAGING

This pair ships free of charge and will be professionally packed by HQaudios for safe delivery.

• Each speaker carefully wrapped and protected.
• Extra protection around cabinets, corners, grilles, drivers, and rear terminals.
• Heavy-duty boxing and internal cushioning to minimize movement in transit.
• Tracking information provided after shipment.
• Signature may be required upon delivery.

Local pickup may also be available by appointment.

13. 1-YEAR HQAUDIOS WARRANTY

This pair is backed by our 1-Year HQaudios Warranty, covering normal-use functionality related to the service work performed by HQaudios. If you experience an issue, please contact us first. We are committed to helping our customers and will work with you to resolve the problem in a fair and reasonable way.

The warranty does not cover misuse, improper setup, unauthorized repair, physical damage, cosmetic wear, shipping damage after delivery, amplifier clipping, excessive power, incorrect wiring, incompatible equipment, or operation outside the manufacturer's intended specifications.

14. CUSTOMER SERVICE

Once your speakers arrive, if you have questions about setup, speaker connection, amplifier matching, placement, or general operation, please contact us. We are happy to help you get the best performance from your vintage audio system.

15. IMPORTANT NOTE FOR VINTAGE AUDIO BUYERS

This is vintage audio equipment, and minor cosmetic signs of age should be expected. We do our best to describe and photograph each item accurately. Please review all photos carefully and contact us with any questions before purchase.

Vintage speakers must be connected and operated correctly. Proper amplifier compatibility, speaker impedance, wiring, and polarity should always be verified before operation.

HQaudios - Vintage Audio Restored with Care.

Professionally Restored / Fully Tested / Carefully Packed / 1-Year Warranty