JBL launches compact 4309 Studio Monitor speaker

Larger 4349 shrinks down in size but not quality

by Andy Bassett
Hi-Fi News

JBL launches compact 4309 Studio Monitor speaker

JBL’s 4309 Studio Monitor bookshelf speaker manages to infuse 75 years of acoustic development into a compact package.

Coming off the back of its larger sibling, the 4349 Studio Monitor which was released in September 2020, the JBL 4309 incorporates many of the same patented JBL acoustic technologies of the larger speaker to help it deliver the power, dynamics and accuracy that the JBL brand has become recognised for over the last seven decades. 

Whereas the 2-way 4349 Studio Monitor used a 12-inch cast-frame, pure-pulp woofer cone, the more compact 4309 reduces this to the 6.5-inch version. Also on board is a 2410H-2 1-inch compression driver mated to the latest High-Definition Imaging (HDI) horn and the subsequent marriage of JBL’s recognised acoustic performance, retro-style and compact design has resulted in a recent Red Dot Award - a sought-after achievement for high design quality which is awarded by an international jury and which bestows a seal of quality only given to a few products in each category.

JBL launches compact 4309 Studio Monitor speaker
JBL 4309 Studio Monitor speaker

Designed in the world-famous acoustic engineering facility in Northridge, California, the decades of design research by JBL into the nuance of horn design has resulted in the revolutionary High-Definition Imaging (HDI) horn geometry which delivers improved high-frequency detail, uniform directivity, neutral frequency response, both on- and off-axis, and seamless transition between the high and low frequency drivers. 

 At the core of the 2410H-2  compression driver is a lightweight polymer, annular diaphragm that improves high-frequency extension by reducing diaphragm mass. An Ultra High-frequency tonal adjuster is located on the front panel below the horn and allows the sound to be tailored to the specific environment and listener preference. This control works in conjunction with an advanced crossover network design. 

The 4309’s 165mm woofer uses a  long-throw voice coil in conjunction with the symmetrical field motor design, flux stabilization ring, and copper shorting ring to  guarantee maximum output with low distortion. A Pure-pulp cone provides a lightweight, rigid diaphragm and helps to eliminate breakup modes ensuring proper pistonic motion throughout the operating band.

This is all housed in an enclosure which is heavily braced with 18mm thick walls to provide a solid acoustic foundation and incorporates a bass reflex design with dual front-firing, computer-optimised flared ports.

JBL launches compact 4309 Studio Monitor speaker

The JBL 4309 Studio Monitor sports a classic JBL monitor design with the iconic blue baffle and is finished in a choice of walnut or black walnut furniture-grade satin wood veneers. A blue (walnut) or black (black walnut) cloth grille completes the elegant appearance. Dual sets of gold-plated binding posts provide a secure connection and offer a choice of single-ended or bi-wire/bi-amplified connections.

Jim Garrett, Senior Director, Product Strategy and Planning, HARMAN Luxury Audio, commented, “Our Studio Monitor series of high-performance loudspeakers are some of our most popular models globally as there simply isn’t anything else like them.” He went on to add, “The combination of the heritage pro-style aesthetics and state-of-the-art acoustic technologies packaged together in the small form factor of the 4309 results in a fantastic loudspeaker discerning listeners will love.

The JBL 4309 Studio Monitor will be available for purchase in June with retail pricing of £1,799 GBP / $2,000 USD.  

Source: Press release 
Image Source: Harman Luxury Audio Group

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