Unbeatable Sound All Day Long
The all-new JBL Boombox 4 is bigger, bolder, and better than ever, delivering powerful JBL Pro Sound that stays loud and clear with deep, thumping bass. AI Sound Boost analyzes music in real time, adjusting the sound for more power with less distortion, even at maximum volume. It features two larger woofers, two tweeters, and three passive radiators for harder-hitting and cleaner-sounding tracks. Users can switch between deep or vibrant punchy Bass Boost settings to match their mood. The classic Boombox design has been upgraded to be larger yet lighter, making it easier to transport to any location. It is IP68 waterproof and dustproof, ensuring durability in various conditions. With up to 34 hours of playtime, it is designed for extended use. The JBL Boombox 4 allows users to carry the mood and energy everywhere.
Key Features
- Unbeatable JBL Pro Sound with AI Sound Boost
- Up to 34 hours of playtime
- Waterproof and dustproof (IP68)
- Multi-speaker connection via Auracast™
- Two Bass Boost settings (Deep Bass, Punchy Bass)
- Larger, louder, yet lighter design
- Lossless audio playback via USB-C
- Constructed with recycled plastic and fabric, plus FSC certified paper packaging
- Replaceable battery** (**Replaceable battery sold separately)
Features and Benefits Detailed
Unbeatable JBL Pro Sound with AI Sound Boost
The JBL Boombox 4 offers massive sound with deep and punchy bass. It is equipped with two larger woofers, two tweeters, and three passive radiators for enhanced audio performance. AI Sound Boost technology analyzes music in real time to optimize sound output, providing more power and less distortion, even at high volumes.
Up to 34 Hours of Playtime
Enjoy extended listening sessions with up to 28 hours of playtime on a single charge. JBL Playtime Boost can add up to 6 extra hours of playback, ensuring the music continues.
Waterproof and Dustproof
The speaker is rated IP68 for waterproof and dustproof capabilities, making it suitable for use in various environments, including beaches and outdoor settings.
Multi-speaker Connection by Auracast™
Users can stereo pair two Boombox 4 speakers for a wider sound stage or connect multiple Auracast™-enabled JBL speakers to play the same playlist across a larger area.
Two Bass Boost Settings
The speaker offers two distinct Bass Boost modes: Deep Bass mode (indicated by an orange JBL Horn mark) for enhanced low frequencies, and Punchy Bass mode (indicated by a white JBL Horn mark) for tighter, more energetic bass.
Bigger and Louder, but Lighter
The JBL Boombox 4 has been redesigned to be lighter than previous models, improving portability without compromising sound output.
Lossless Audio Playback
Connect to a laptop or other audio device via the USB-C port to experience lossless audio playback, ideal for audiophiles. This requires compatible lossless audio content from supported apps or services.
Recycled Materials and Sustainable Packaging
The JBL Boombox 4 utilizes post-consumer recycled plastic and recycled fabric for the speaker grille. Packaging is made from FSC-certified paper printed with soy ink.
Replaceable Battery
The rechargeable battery can be replaced in three simple steps, extending the speaker's lifespan.
Technical Specifications
General Specifications
| Specification | Details |
|---|---|
| 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 |
| Output power (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
| Specification | Details |
|---|---|
| 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
| Specification | Details |
|---|---|
| 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 lbs |
Packaging Dimensions
| Specification | Details |
|---|---|
| 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 lbs |
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
Company Information: HARMAN International Industries, Incorporated, 8500 Balboa Boulevard, Northridge, CA 91329 USA. Visit www.jbl.com.
© 2025 HARMAN International Industries, Incorporated. All rights reserved. JBL is a trademark of HARMAN International Industries, Incorporated, registered in the United States and/or other countries. Features, specifications, and appearance are subject to change without notice.
