Inside the Boombox 4 sit two 123 mm woofers, two 20 mm tweeters and three passive radiators — two circular, one racetrack — in a 5.89 kg cabinet with a carrying handle across the top. It is a large portable built for beaches, gardens and worksites where mains power is not close by, and where a small speaker simply will not carry far enough.
On AC power the amplifier delivers 2 x 65 W RMS to the woofers and 2 x 40 W RMS to the tweeters, easing to 2 x 60 W on battery; response extends to 37 Hz. Three hours of charging yields up to 28 hours plus 6 more with playtime boost, and the battery pack is replaceable. Bluetooth 5.4 and Auracast handle multi-speaker linking.
Key Features
- Unbeatable JBL Pro Sound with AI Sound Boost
- Up to 34 hours of playtime
- Waterproof and dustproof
- Multi-speaker connection by Auracast™
- Two Bass Boost settings to match our vibe
- Bigger and louder, but lighter
- Lossless audio playback
- Recycled plastic and fabric, plus FSC certified paper packaging
- Replaceable battery
Technical Specifications
General Specifications
| Model No. | JBL Boombox 4 |
| Transducers | 2 x 5 inch / 2 x 123mm woofer, 2 x 0.75 inch / 2 x 20mm Tweeter, 2 pcs circle + 1 pc racetrack passive radiator |
| Output power | (AC mode): 2 x 65W RMS Woofer, 2 x 40W RMS Tweeter (Battery mode): 2 x 60W RMS Woofer, 2 x 40W RMS Tweeter |
| Power input | 100 - 240 Vac; 50/60 Hz |
| Frequency response | 37Hz - 20 kHz |
| Signal-to-noise ratio | > 80 Db |
| Battery type | Rechargeable Li-ion Battery Pack 99.02Wh (equivalent to 21.6V / 4584 mAh) |
| Battery charge time | 3 hours |
| Music play time | Up to 28 hours of playtime plus 6 hours with playtime boost (dependent on volume level and audio content) |
| Connection ports | AC-in, USB-C |
| Cable type | AC Power Cable |
| Cable length | 2000 mm / 78.7" USB Specification |
| Bluetooth® version | 5.4 |
| Bluetooth® profile | A2DP 1.4, AVRCP 1.6 |
| Bluetooth® transmitter frequency range | 2.4 GHz - 2.4835 GHz |
| Bluetooth® transmitter power | ≤ 14dBm (EIRP) |
| Bluetooth® transmitter modulation | GFSK, π/4 DQPSK, 8DPSK Product dimensions |
| Dimensions (W x H x D) | 506.4mm x 262.9mm x 212.9mm / 19.9" x 10.4" x 8.4" |
| Net weight | 5.89kg / 13 Ibs Packaging dimensions |
| Dimensions (W x H x D) | 565 mm x 345 mm x 256 mm / 22.2" x 13.6" x 10.1" |
| Gross weight | 8.16kg / 17.99 Ibs What's in the Box 1 x JBL Boombox 4 AC power cord (AC plug and quantity varies by region) 1 x Quick start guide 1 x Safety sheet 1 x Warranty card |
Finish: Black
Supplied in the UAE by Cinefolks. Manufacturer warranty applies.
