JBL 4300

The JBL 4300 is a compact three-way bass-reflex studio monitor. The record on it is thin. No production years, original price, or market reception survive in the sources available. What is documented comes mostly from European equipment directories, which agree on the essentials.

The driver complement is a 20 cm woofer with JBL's "µ-Composite" cone, a 13 cm midrange, and a 2.5 cm dome tweeter. The crossover sits at 2.5 kHz, and the cabinet is bass reflex, finished in walnut. Rated sensitivity is 90 dB/W/m, nominal power handling 80 W with a 100 W maximum, and impedance is 8 ohms. Frequency response is stated as 50 Hz to 40 kHz. The enclosure measures 290 × 500 × 290 mm and weighs 14.0 kg.

The 4300 has wide bandwidth for its size, and it appears to have been aimed at nearfield or small-room studio use. One source suggests a "Control series" association, but that is unverified and should be treated cautiously. Beyond the spec sheet, almost nothing else is recorded. The LSR4300 series was advertised as the first studio monitor to incorporate the Harman HiQnet network protocol (Mix Magazine, October 2006, p.4). There are no common repair notes and no collector pricing.