JBL 4309

The JBL 4309 Studio Monitor is a compact, high-performance bookshelf loudspeaker built around the patented JBL 2410H-2 1-inch compression driver mated to patented High-Definition Imaging (HDI™) horn, paired with a 6.5-inch, cast-frame Pure-pulp cone woofer. This combination delivers music with authority and accuracy not possible with traditional loudspeaker designs. The cabinet features a classic JBL studio monitor design with a blue baffle and is finished in a choice of Walnut or Black Walnut furniture-grade satin wood veneers.
Patented High-Definition Imaging (HDI™) horn
Patented 2410H-2 1-inch (25mm) high-frequency compression driver
6.5-inch (165mm) cast frame, Pure-pulp cone woofer with 1.5-inch voice coil
Classic Studio Monitor design with premium finishes including satin Walnut wood veneer with blue grille or satin Black Walnut wood veneer with black grille

  • 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 Units of Measure Pair
  • Recommended stand height 24” (609 mm)