JBL 4412 3-Way Studio Monitor Speakers Pair – Restored – 1-Year Warranty

Professional Studio Monitor Heritage: JBL’s classic 4400 Series design for recording and broadcast monitoring applications.

3-Way, 3-Driver Architecture: Dedicated low-, mid-, and high-frequency transducers for precise reproduction.

12-Inch Aquaplas Woofer: Large reinforced-cone bass driver engineered for controlled low-frequency performance.

5-Inch Midrange: Dedicated felted-paper cone driver for critical vocal and instrumental frequencies.

Pure Titanium Dome Tweeter: JBL high-frequency technology designed for detailed treble reproduction.

Mirror-Imaged Monitor Design: Left/right cabinet orientation designed to support accurate stereo imaging.

Bass-Reflex Engineering: Tuned enclosure system for extended bass reproduction.

Adjustable Driver Balance: Front-panel controls for midrange and high-frequency level adjustment.

Professionally inspected, tested, and serviced. Aging or degraded components have been replaced where necessary to restore performance as close as possible to original factory specifications.

Before Restoration

We received this vintage speaker pair with aging cabinet surfaces, scratches, veneer damage, accumulated dust, and deteriorated cosmetic details. The bass-driver assemblies, speaker terminals, and crossover systems were also identified for inspection.

During Restoration

Driver Testing: We tested each driver and measured its DC resistance.

Woofer Inspection: We inspected the bass drivers, cones, surrounds, and mounting assemblies.

Midrange & Tweeters: We checked the midrange drivers and titanium-dome tweeter assemblies.

Crossover Networks: We inspected and measured crossover components; out-of-spec capacitors were replaced.

Level Controls: We cleaned and serviced the midrange and high-frequency adjustment controls.

Terminals & Wiring: We inspected internal connections and cleaned the rear speaker terminals.

Cabinet Restoration: We repaired cabinet imperfections, sanded affected surfaces, and refinished the wood-veneer cabinets.

Cabinet Cleaning: We removed accumulated dust and cleaned accessible interior cabinet surfaces.

Driver Mounting & Seals: We checked driver mounting hardware and cabinet gaskets for proper seating.

Front Components: We inspected the speaker fronts, grille components, and mounting arrangement.

After Restoration / Final Testing

We completed the standard speaker burn-in procedure to assess operational stability.

We performed frequency-sweep testing and listening evaluations on both speakers.

Both speakers were checked for normal sound output following the service process.

Technical Condition

Professionally refurbished passive studio monitor speakers, checked for normal operation through the HQaudios inspection process.

Cosmetic Condition

The speakers feature wood-veneer cabinets and dark front baffles with the recognizable JBL 4412 driver layout. Their finished appearance is shown in the actual product photographs. Please examine cabinet corners, veneer surfaces, driver faces, grilles, and rear panels for the exact cosmetic details.

QC Summary

The pair has been prepared through the HQaudios refurbishment and inspection process. Please review the actual product photographs for its final presentation.

Brand: JBL Professional

Model: 4412 Studio Monitor

Type: Passive Studio Monitor Loudspeaker

Speaker Configuration: 3-Way, 3-Driver Bass-Reflex System

Low-Frequency Driver: 12-Inch (300 mm) Aquaplas Laminate Cone Woofer

Midrange Driver: 5-Inch (125 mm) Felted-Paper Cone

High-Frequency Driver: 1-Inch (25 mm) Pure Titanium Dome

Factory Frequency Range (-6 dB): 35 Hz – 27 kHz

Factory Frequency Response (+/-2 dB): 45 Hz – 20 kHz

Nominal Impedance: 8 Ohms

Factory Power Rating: 150 Watts, Pink Noise

Factory Sensitivity: 90 dB SPL (1 W / 1 m)

Factory Crossover Frequencies: 800 Hz and 4.5 kHz

Factory Reference Dimensions (Each): 14.25 W x 23.5 H x 11.25 D Inches

Factory Reference Weight (Each): 47 lb (21 kg)

Cabinet: Wood Veneer

Listed Quantity: One Pair (2 Speakers)

The sale includes the two loudspeakers pictured in the product photographs.

Speaker stands, amplifiers, audio cables, and other display equipment are not included.

Only the items specifically listed above are included.