JBL MODEL 4429

Second-hand. In good conditions. They show signs of wear as shown in the photos. Without original packaging.

The JBL 4429 Studio Monitor speakers represent a bold return to the past, evoking the iconic style of the 1970s in both design and materials. Their robust, boxy shape, walnut veneer finish, and classic blue grille recall the golden age of studio monitors—but behind this vintage look lies cutting-edge technology built for uncompromising audio performance.

Unlike today’s trends that favor tall, slim enclosures, the JBL 4429s feature a wide front and shallow depth—a functional design choice made to accommodate the large internal components. The massive 300mm woofer alone requires substantial space, as does the wide Bi-Radial horn spanning the entire baffle to house the 50mm mid/high-frequency driver. Complementing the system is a smaller integrated horn containing a 19mm driver, functioning as a super-tweeter that activates at 7000 Hz and extends all the way up to 45,000 Hz—well beyond human hearing, but ideal for high-resolution audio sources.

These are true three-way studio monitors, bass reflex loaded with dual front ports hidden behind the grille. Internally, they’re heavily built with a 25mm MDF cabinet and reinforced bracing that ensure rigidity and durability. Each speaker weighs over 32kg, a testament to their solid construction.

Concealed behind the grille are two adjustable trim pots for mid and high frequencies, allowing users to fine-tune the sound according to room acoustics or personal preferences. However, adjustments are only recommended for experienced users, preferably with proper measuring tools for accurate calibration.

At the heart of the speaker is the 1200FE-8 woofer, featuring a 300mm pure pulp cone, ferrite magnet, and edge-wound aluminum voice coil. This driver delivers deep, controlled bass even at high volumes. It’s paired with the 175Nd-3 high-frequency driver, equipped with a 50mm titanium diaphragm to produce mid and high frequencies with remarkable accuracy, explosive dynamics, and minimal distortion. For the ultra-high range, the 138Nd driver with a 19mm titanium diaphragm ensures precise rendering of sonic details that exceed the range of human hearing.

Both HF and UHF horns are made of SonoGlass, a dense and inert material that eliminates unwanted resonances, delivering clear, distortion-free sound.

With bi-wire connection capability, customizable sound settings, and a tonal character faithful to the source, the JBL 4429 speakers are built for the most demanding audio enthusiasts, offering a listening experience that combines sonic refinement with powerful dynamics—all wrapped in JBL’s unmistakable vintage flair.

Technical Specifications:

• Low-frequency transducer: 300mm pure pulp cone woofer 1200FE-8

• High-frequency transducer: 50mm titanium diaphragm 175Nd-3

• Ultrahigh-frequency transducer: 19mm titanium diaphragm 138Nd

• Recommended amplifier power: 200 watts RMS

• Frequency response: 40Hz – 45kHz (–6dB)

• Nominal impedance: 6 ohms

• Sensitivity: 91dB (2.83V/1m)

• Crossover frequencies: 800Hz, 7kHz

• Controls: MF and HF driver attenuators

• Enclosure type: 25mm MDF with bass reflex design

• Connector type: Dual gold-plated five-way binding posts

• Finish: Walnut veneer with protective topcoat

• Grille color: Monitor Blue

• Dimensions (H x W x D): 635mm x 400mm x 300mm

• Weight: 32.3 kg (71 lb)