JBL 4309
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.
Specifications
Type2-way bookshelf loudspeaker
Low Frequency Driver6.5" (165mm) Pure Pulp cone woofer
High Frequency Driver2410H-2 1-inch (25mm) annular ring, Teonex® diaphragm compression driver with advanced HDI™ geometry horn
Recommended Amplifier Power25 - 150 WRMS
Impedance4 Ohm
Loudspeaker Sensitivity87 dB/2.83V/1m
Frequency Response42 Hz - 30 kHz (-6 dB)
Coverage Angle, -6 dB100 Degrees Hor. x 80 Degrees Ver., from 2kHz to 17kHz
Crossover Frequency1.6 kHz
Enclosure TypeH-braced front-ported bookshelf
Grille FeatureMonitor style to match horn mating features, supplied in dark blue (with walnut cabinet) and black (with black cabinet)
Dimensions with grille16.5” H x 10.25” W x 9” D (419 mm H x 260 mm W x 227 mm D)
ControlsUHF tone control
Input TypeDual sets of gold-plated binding posts with shorting straps
Product Weight (Each)24.2 lbs. (10.98 kg)
Shipping Weight56.2 lbs. (25.5 kg)
Shipping Units of MeasurePair
Warranty5 Years
Recommended stand height24” (609 mm)