JBL 4309

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Product Specifications

General Specifications

Type: 2-way bookshelf loudspeaker

Low Frequency Driver: 6.5" (165mm) Pure Pulp cone woofer

High Frequency Driver: 2410H-2 1-inch (25mm) annular ring, Teonex® diaphragm compression driver with advanced HDI™ geometry horn

Recommended Amplifier Power: 25 - 150 WRMS

Impedance: 4 Ohm

Loudspeaker Sensitivity: 87 dB/2.83V/1m

Frequency Response: 42 Hz - 30 kHz (-6 dB)

Coverage Angle, -6 dB: 100 Degrees Hor. x 80 Degrees Ver., from 2kHz to 17kHz

Crossover Frequency: 1.6 kHz

Enclosure Type: H-braced front-ported bookshelf

Grille Feature: Monitor style to match horn mating features, supplied in dark blue (with walnut cabinet) and black (with black cabinet)

Dimensions with grille: 16.5” H x 10.25” W x 9” D (419 mm H x 260 mm W x 227 mm D)

Controls: UHF tone control

Input Type: Dual sets of gold-plated binding posts with shorting straps

Product Weight (Each): 24.2 lbs. (10.98 kg)

Shipping Weight: 56.2 lbs. (25.5 kg)

Shipping Units of Measure: Pair

Warranty: 5 Years

Recommended stand height: 24” (609 mm)

Designed and engineered in JBL’s 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 6.5-inch (165mm) cast-frame, Pure-pulp cone woofer for powerful dynamics and incredibly accurate sound reproduction.