JBL Synthesis 4309

JBL 4309 Studio Monitor – Precision Sound, Legendary Engineering Experience studio-quality sound at home with the JBL 4309 Studio Monitor, a compact bookshelf speaker crafted for uncompromising audio performance. Designed and built at JBL’s world-renowned acoustic engineering center in Northridge, California, this model delivers the bra... morend’s iconic sound accuracy, depth, and dynamic range in a refined, bookshelf-sized design. At the heart of the 4309 lies JBL’s High-Definition Imaging (HDI™) waveguide, developed through years of research into acoustic precision and sound dispersion. This proprietary horn technology ensures crystal-clear high frequencies with consistent off-axis performance, resulting in a balanced, lifelike soundstage across your listening environment. Driving the high end is JBL’s 2410H-2 1-inch compression driver, a result of advanced transducer innovation derived from the brand’s professional “D2” series. Its poly...

Designed and engineered in JBLs world-famous acoustic engineering facility in Northridge California the 4309 Studio Monitor is a showcase of patented JBL acoustics technologies. This bookshelf loudspeaker features a 2-way design with patented High-Definition Imaging (HDI™) horn technology the patented 2410H-2 1-inch (25mm) compression driver and a... more6.5-inch (165mm) cast-frame Pure-pulp cone woofer for powerful dynamics and incredibly accurate sound reproduction. JBLs revolutionary High-Definition Imaging horn geometry is the result of intense research into the nuances of horn design. In search of exceptional high-frequency detail and uniform directivity for smooth in-room response JBL engineers pioneered a design that delivers neutral frequency response both on- and off-axis and provides a seamless transition between the high and low frequency drivers. The JBL 2410H-2 compression driver benefits from the advanced research and applications derived from JBL Professionals "D2" range of transducers. At the core of the 2410H-2 device is a lightweight polymer annular diaphragm that improve high-frequency extension by reducing diaphragm mass. The V-shaped geometry of the annular diaphragm reduces breakup modes eliminating time smear and reducing distortion. The result is incredible dynamics with accurate reproduction and a lack of power compression.