JBL Boombox 4 - Powerful Waterproof Bluetooth Speaker
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JBL Boombox 4 - Powerful Waterproof Bluetooth Speaker
Overview
The JBL Boombox 4 is a portable Bluetooth speaker that JBL calls its most powerful portable waterproof speaker, built for backyards, beaches and big gatherings that need real volume and deep, punchy bass. Two 5-inch woofers, two 0.75-inch tweeters and three passive radiators deliver up to 210 watts on AC power, and JBL redesigned it to be lighter than before. It's for anyone who wants party-sized sound they can carry and leave outside all day.
AI Sound Boost analyses your music in real time and adjusts the sound for more power with less distortion, even at full volume. A Bass Boost button on the top panel switches between Deep Bass, where the woofers and passive radiators go all in, and Punchy Bass, for a tighter, more energetic sound. The JBL Horn mark glows orange or white so you can see which mode you're in.
Battery life runs up to 28 hours on a charge, and Playtime Boost adds up to 6 more for up to 34 hours. The battery is replaceable in three simple steps (sold separately), the IP68 rating makes it waterproof and dustproof, and the USB-C port supports lossless playback from a laptop or other device with lossless content. Auracast lets you stereo pair two Boombox 4 speakers or link other Auracast-enabled JBL speakers.
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For the biggest sound, run the Boombox 4 on AC power when an outlet is nearby: JBL rates it at 210 W on AC versus 200 W on battery. Switch between Deep Bass and Punchy Bass to suit the space and the music. If you're adding a second speaker, keep in mind the Boombox 4 links over Auracast, so choose another Boombox 4 or an Auracast-enabled JBL speaker.
More Info
Why the JBL Boombox 4 Stands Out
AI Sound Boost
More power, less distortion at full volume.
Two Bass Boost Modes
Deep Bass or Punchy Bass.
Up to 34 Hours
28 hours, plus up to 6 with Playtime Boost.
Replaceable Battery
Swap in three steps (sold separately).
IP68 Rated
Waterproof and dustproof.
Lossless USB-C Playback
From a laptop or compatible device.
Buyer's Guide
Who It's For
- The All-Day Outdoor Host: Wants long playtime and IP68 protection.
- The Bass-First Listener: Wants Deep or Punchy bass on demand.
- The Lossless Listener: Wants wired lossless playback over USB-C.
How It Compares
Compared with the JBL Boombox 3, the Boombox 4 raises output on AC power from 180 W to 210 W, moves from IP67 to IP68, steps up from Bluetooth 5.3 to 5.4 and extends playtime from 24 hours to up to 34 with Playtime Boost. It also switches from PartyBoost to Auracast and replaces the 3.5 mm aux input with a USB-C port for lossless playback.
JBL Boombox 4 - Powerful Waterproof Bluetooth Speaker Specifications
| General Information | |
|---|---|
| Model | Boombox 4 |
| Brand | JBL |
| Product Type | Portable Bluetooth speaker |
| Colours Available | Black, Blue |
| Audio | |
| Transducers | 2 x 5 in (123 mm) woofer, 2 x 0.75 in (20 mm) tweeter, 3 passive radiators (2 circular, 1 racetrack) |
| Output Power (AC) | 2 x 65 W RMS woofer + 2 x 40 W RMS tweeter |
| Output Power (Battery) | 2 x 60 W RMS woofer + 2 x 40 W RMS tweeter |
| Frequency Response | 37 Hz - 20 kHz |
| Signal-to-Noise Ratio | Greater than 80 dB |
| Sound Features | AI Sound Boost, Bass Boost (Deep Bass, Punchy Bass) |
| Connectivity | |
| Bluetooth Version | 5.4 |
| Bluetooth Profiles | A2DP 1.4, AVRCP 1.6 |
| Connection Ports | AC-in, USB-C (lossless audio playback) |
| Multi-Speaker | Auracast |
| Battery and Physical | |
| Battery | Rechargeable Li-ion pack, 99.02 Wh, replaceable (sold separately) |
| Playtime | Up to 28 hours; up to 34 hours with Playtime Boost |
| Charge Time | 3 hours |
| Water and Dust Rating | IP68 |
| Dimensions (W x H x D) | 51 x 26 x 21 cm (20 x 10 x 8 in) |
| Weight | 5.89 kg (13 lb) |
| In the Box | |
| Included | JBL Boombox 4, AC power cord, quick start guide, safety sheet |
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