JBL 4307 Studio Monitor


JBL loudspeakers have been a top choice of music lovers and audiophiles for more than 70 years. Embodying that legacy, the 4307 10-inch, 3-way Studio Monitor is designed and engineered to bring studio-quality sound into your home. Featuring a 10-inch pure-pulp cone woofer for natural, undistorted bass, a 5-inch polymer-coated midrange speaker for pristine and dynamic human voice reproduction, and a 1 ½-inch tweeter with laminated tangential ring diaphragm for sparkling high frequency response, the 4307 fills your room with legendary JBL sound. The speaker’s compact form factor and sophisticated walnut veneer finish means it integrates subtly and elegantly into any décor.

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250mm (10″) Low-Frequency Transducer

• Non-bleached, non-coloured white pure pulp cone for low-distortion and natural sound
• Rubber surround reduces resonances for purer sound and durability
• Low-distortion magnetic circuit improves bass accuracy

125mm (5″) Midrange Transducer

• Polymer-coated pure pulp cone with double-pleated cloth edge
• Powerful magnetic circuit increases power handling for dynamic performance at higher volumes

38mm (1-1/2″) High-Frequency Transducer

• Dual-layer laminated tangential ring diaphragm
• Tangential rib outer suspension
• Die-cast aluminium horn with phase plug

Key Features

• High-quality dividing network
• Front-mounted ports
• Continuously variable MF and HF attenuators
• Traditional JBL studio monitor finish


  • Low-Frequency Transducer: 250mm (10″) white pure pulp cone driver with rubber surround
  • Midrange Transducer: 125mm (5″) polymer-coated pure pulp cone driver
  • High-Frequency Transducer: 38mm (1-1/2″) tangential ring diaphragm on a cast aluminium horn
  • Recommended Amplifier Power: 150 watts
  • Frequency Response: 45Hz – 45kHz (-6dB)
  • Nominal Impedance: 6 ohms
  • Sensitivity (2.83V/1m): 91dB
  • Crossover Frequencies: 1.5kHz, 6.5kHz
  • Controls: Attenuators for MF and HF drivers
  • Finish: Walnut lacquer with blue baffle
  • Grille Colour: Monitor blue
  • Dimensions (H x W x D): 545mm x 328mm x 300mm
  • Weight: 16.7kg


For more than 60 years, the JBL® brand has delivered products that exemplify the technology and expertise gained through our leadership in professional sound reproduction. The JBL name has been synonymous with the precise, naturally articulated sound found in many of the world’s most prestigious locations, including clubs, cinemas and recording studios, and live-music reinforcement in venues ranging from concert halls to outdoor stadiums.