The JBL 4309 is a smaller model of the JBL 4349 and shares the identical retro aesthetic. The compact audio system (they measure simply over 41cm/16in tall) come outfitted with a 1-inch compression driver teamed with a Excessive-Definition Imaging horn and a 6.5-inch, solid body pure-pulp cone woofer.

The crossover community options air-core inductors, solid wire-wound resistors and low-ESR metallized movie capacitors, which JBL says optimise the efficiency of these drivers.

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