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The JBL 4623 is a vintage 2-way portable PA and sound reinforcement loudspeaker from the JBL Professional Cabaret series, produced from 1979 through 1991. [1]

Key Specifications

• System Type: 2-way bass-reflex system

• Low-Frequency Driver: 15-inch (38 cm) JBL E130-8 cone loudspeaker

• High-Frequency Driver: JBL 2402 (or 2402H) bullet ring-radiator horn tweeter

• Nominal Impedance: 8 Ohms

• Frequency Range: 50 Hz to 15 kHz

• Power Capacity: 150W continuous pink noise (300W program)

• Sensitivity: 105 dB SPL [1, 2, 3, 4, 5]

Physical Build

• Enclosure Material: 19 mm thick multi-layer plywood

• Finish: Durable black polyurethane paint

• Hardware: Polycarbonate protective corner guards, stacking slots, and spring-loaded carrying handles

• Dimensions: Roughly 30 x 20 x 18 inches

• Weight: About 95 lbs per cabinet [1, 2]

Usage and Application

• Designed primarily for live sound reinforcement, Alnico-era musical instruments, and acoustic guitar or vocal amplification.

• Best suited for small-to-medium rooms with audiences ranging from 150 to 250 people.

• Detailed architectural documentation can be reviewed via the Audio Database profile. [1, 2, 3, 4]

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