JBL Boombox 4 Portable Bluetooth Speaker
 
Bring powerful JBL Pro Sound anywhere with the JBL Boombox 4. Two 5-inch woofers, two 0.75-
inch tweeters and three passive radiators deliver clear sound and deep bass, while AI Sound Boost adjusts the audio in real time to reduce distortion.
 
Choose between deep and punchy Bass Boost profiles to suit your music. Auracast support lets you connect compatible speakers for wider sound coverage, while the built-in power bank charges supported devices.
 
The rugged IP68 waterproof and dustproof design is suitable for indoor and outdoor use. Battery life reaches up to 34 hours with Playtime Boost enabled.
 
Features
Powerful JBL Pro Sound
AI Sound Boost
Two 5-inch woofers
Two 0.75-inch tweeters
Three passive radiators
Deep and Punchy Bass Boost modes
Up to 34 hours of playtime
IP68 waterproof and dustproof protection
Auracast multi-speaker connectivity
Built-in power bank
Bluetooth 5.4
Portable carry-handle design
 
Specifications
Woofers: 2 × 5 Inches
Tweeters: 2 × 0.75 Inches
Passive Radiators: 2 Circular and 1 Racetrack
AC Output: 2 × 65W Woofers and 2 × 40W Tweeters
Battery Output: 2 × 60W Woofers and 2 × 40W Tweeters
Frequency Response: 37Hz–20kHz
Signal-to-Noise Ratio: Above 80dB
Bluetooth Version: 5.4
Bluetooth Frequency Range: 2.4–2.4835GHz
Battery Type: 99.02Wh Rechargeable Lithium-Ion
Maximum Playtime: Up to 34 Hours with Playtime Boost
Charging Time: Approximately 3 Hours
Connections: AC Input and USB-C
Water and Dust Resistance: IP68
Dimensions: 51 × 26 × 21cm
Weight: Approximately 5.89kg
Power-Cable Length: 2m
 
What’s in the Box
JBL Boombox 4
AC Power Cable
Quick-Start Guide
Safety Sheet and Warranty Card
 
Playtime varies according to volume, Bass Boost, Playtime Boost, connected devices and usage conditions. Ensure all port covers are properly closed before exposure to water, and allow the speaker to dry completely before charging.