Description
The JBL Boombox 4 is a brand-new portable Bluetooth speaker built for outdoor gatherings, parties and anyone who wants big sound away from a wall socket. It delivers 200 W RMS on battery, close to the 210 W it gives on mains, through two 5-inch woofers, two tweeters and three passive radiators. Battery life runs up to 28 hours, or 34 hours with Playtime Boost, and the battery itself can be swapped when it wears out. An IP68 rating, Auracast linking and wired lossless playback over USB-C round out a capable, durable speaker.
Key features
- Full power on battery. The Boombox 4 produces 200W RMS unplugged and 210W RMS on mains. That is up from 136 W on battery for the Boombox 3, so it keeps its volume and punch away from a socket.
- Long, replaceable battery. A 99.02 Wh lithium-ion pack gives up to 28 hours of play, or up to 34 hours with Playtime Boost. The battery is replaceable, so a worn pack can be swapped rather than the whole speaker, and a spare extends play time.
- Deep, adjustable bass. Two 123 mm woofers and three passive radiators reach down to 37 Hz. Two Bass Boost modes, Deep Bass and Punchy Bass, are selected with a button on the top panel, while AI Sound Boost adjusts the sound in real time.
- IP68 protection. The speaker is rated IP68 waterproof and dustproof, up from IP67 on the Boombox 3. Its build uses post-consumer recycled plastic and a recycled fabric grille, with a built-in carry handle.
- Auracast multi-speaker. Auracast lets you stereo-pair two Boombox 4 speakers or link several Auracast-enabled JBL speakers. It replaces the older PartyBoost system.
- Lossless audio and power bank. Connect a laptop or other device through USB-C for wired lossless playback, where the source supports it. The same speaker can also act as a power bank to charge a phone.
Specifications
| Audio | |
|---|---|
| Drivers | 2 x 5 in (123 mm) woofer, 2 x 0.75 in (20 mm) tweeter, 2 circle + 1 racetrack passive radiator |
| Output power on mains (AC) | 2 x 65 W RMS woofer + 2 x 40 W RMS tweeter (210 W total) |
| Output power on battery | 2 x 60 W RMS woofer + 2 x 40 W RMS tweeter (200 W total) |
| Frequency response | 37 Hz – 20 kHz |
| Signal-to-noise ratio | > 80 dB |
| Sound processing | AI Sound Boost (real-time adjustment) |
| Bass Boost | Deep Bass and Punchy Bass, via top-panel button |
| Lossless playback | Wired via USB-C (source must offer lossless audio) |
| Battery and power | |
| Battery | Rechargeable lithium-ion, 99.02 Wh (21.6 V / 4584 mAh) |
| Playtime | Up to 28 hours; up to 34 hours with Playtime Boost |
| Charging time | 3 hours |
| Power input | 100–240 V AC, 50/60 Hz |
| Power bank | Yes |
| Replaceable battery | Yes (replacement sold separately) |
| Connectivity | |
| Bluetooth | 5.4, A2DP 1.4, AVRCP 1.6 |
| Bluetooth radio | 2.4–2.4835 GHz, GFSK / π/4 DQPSK / 8DPSK, ≤ 14 dBm EIRP |
| Multi-speaker | Auracast |
| Ports | AC-in, USB-C |
| Water resistance | |
| Rating | IP68 waterproof and dustproof |
| Design and build | |
| Dimensions (W x H x D) | 506.4 x 262.9 x 212.9 mm |
| Weight | 5.89 kg |
| Materials | Post-consumer recycled plastic, recycled fabric grille, built-in carry handle |
| Compatibility | |
| App | JBL Portable app |
| Microphone or speakerphone | None |
What’s in the box
- JBL Boombox 4
- AC power cord (2 m)
- Quick start guide
- Safety sheet
- Warranty card
Good to know
- Charging is from the mains only; the 100–240 V supply works on Nigerian 230V mains.
- There is no 3.5 mm aux input; the only ports are AC-in and USB-C.
- Auracast linking works with other Auracast-enabled JBL speakers.
- The replacement battery is sold separately.
- At about 5.9 kg it is heavy, and the 99 Wh battery sits just under the usual 100 Wh airline limit.
Frequently asked questions
Is the JBL Boombox 4 waterproof?
Yes, it is rated IP68 waterproof and dustproof.
How long does the battery last?
Up to 28 hours, or up to 34 hours with Playtime Boost, and a full charge takes 3 hours.
Can I charge it with USB-C?
No, it charges from the mains through its AC-in port. The USB-C port is used for lossless audio and charging other devices.
Does it have an aux input?
No, there is no 3.5 mm aux input; you can play wired audio through USB-C instead.
Can I connect it to other JBL speakers?
Yes, Auracast lets you stereo-pair two Boombox 4 speakers or link several Auracast-enabled JBL speakers.
Does it have a microphone for calls?
No, it has no microphone or speakerphone function.
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