Driver Configuration

The JBL Boombox 4 features a 7-driver array, including 2 x 5-inch (123 mm) woofers, 2 x 0.75-inch (20 mm) tweeters, and 3 passive radiators (2 circular + 1 racetrack) for enhanced bass and clarity.gadgetcentral+2​

Power Output

It delivers up to 210W RMS in AC mode (2 x 65W woofers + 2 x 40W tweeters) and around 180-200W RMS in battery mode, with a frequency response of 37 Hz–20 kHz and signal-to-noise ratio over 80 dB.gadgetsleo+2​

Battery Specs

Equipped with a replaceable 99.02 Wh Li-ion battery (about 21.6V / 4584 mAh), it offers up to 28 hours of playtime (extendable with Playtime Boost), with roughly 3-hour USB-C fast charging.gadgetsleo​

Connectivity Hardware

Supports Bluetooth 5.4 (A2DP 1.4, AVRCP 1.6) with Auracast for multi-speaker pairing, plus USB-C for lossless audio input and device charging, alongside AUX and USB-A ports.phoneplacekenya+2​

Durability and Build