The Ultimate Outdoor Soundwave · 34-Hour Extreme Endurance
Key Upgrades Compared to Previous BOOMBOX 3❗
✅ 42% Longer Battery Life (24H → 34H)
✅ 13% Lighter (6.78kg → 5.89kg)
✅ New Dual Bass Modes (Previous Gen Had Single Tuning)
✅ Pioneering Replaceable Battery Design (Unlimited Outdoor Playtime)
✅ Upgraded to 3 Passive Radiators (Previous Gen Had 2)
⭐ JBL PRO SOUND Acoustic Breakthrough
• Six-Driver Explosive Output: Dual 5" Woofers + Dual 0.75" Tweeters + Triple Passive Radiators for precise sound staging and powerful rhythm.• Dual Bass Boost Modes with One-Touch Switching: ✦ Deep Mode (Orange Light): Dual 5" woofers + triple passive radiators deliver full output, diving down to 37Hz. ✦ Dynamic Mode (White Light): Enhanced mid-bass punch with precise rhythmic impact.• AI Sound Boost Real-Time Optimization: Maintains low distortion even at max volume, preserving sonic details.• Lossless Audio Support via USB-C Direct Connect: Decodes high-resolution audio like FLAC/ALAC (requires compatible devices).
⭐ Extreme Durability Design
• IP68 Military-Grade Protection: Fully dustproof and submersible in 1m water for 30 minutes—ideal for beaches, storms, and splashes.
• Lightweight Innovation: Larger than previous gen yet 13% lighter at 5.89kg, making it easier to carry.
⭐ Battery & Expansion Revolution
• 34-Hour Ultra-Long Playback: 28 hours base + 6 hours with Playtime Boost for non-stop multi-day parties.
• Replaceable Battery: Three-step detachable 95.02Wh battery module (sold separately) for instant power renewal.
• Auracast™ Sound Expansion: Wirelessly pair two units for stereo sound or sync multiple JBL speakers.
Features & Highlights
Unmatched JBL Pro Sound with AI Sound Boost
Experience powerful, deep bass with a redesigned JBL Boombox 4, featuring two larger woofers, two tweeters, and three passive radiators.With AI Sound Boost, smart technology automatically analyzes and optimizes audio in real-time, delivering greater power and less distortion even at max volume.
Up to 34 Hours of Playtime
Keep the party going—28 hours on a single charge. Forgot to recharge? No problem. With JBL Playtime Boost, add up to 6 extra hours of playback for endless entertainment.
IP68 Water & Dust Resistance
Built to withstand any weather or accidental spills, the JBL Boombox 4 is fully waterproof and dustproof.
Multi-Speaker Connectivity via Auracast™
Share the vibe effortlessly. Use Auracast™ to pair two Boombox 4 speakers for stereo sound or connect multiple Auracast™-compatible JBL speakers for a wider audio range.
Dual Bass Enhancements to Match the Vibe
Fire up the JBL Boombox 4 and enjoy its iconic bass. Want deeper lows? Press the Bass Boost button—the orange JBL horn indicates Deep Bass Mode, engaging all drivers. Prefer tighter, punchier sound? Double-tap the button to switch to Dynamic Mode (white light). Perfect bass for any mood.
Larger, Louder, Yet Lighter
The JBL Boombox 4 delivers bigger sound with a redesigned, lighter build for ultimate portability.
Distortion-Free Audio Playback
Hear every detail. Use the USB-C port to connect your laptop or audio device for lossless playback—ideal for true audiophiles.
*Requires compatible lossless audio sources.
Eco-Conscious Design
Made with recycled plastics and fabric for the grille, and packaged in FSC-certified paper printed with soy ink.
Replaceable Battery**
Need more juice? Swap the rechargeable battery in three simple steps.
**Battery sold separately.
Specifications
Model: JBL Boombox 4
Drivers: Dual 123mm Woofers, Dual 20mm Tweeters, 2 Round + 1 Arc Passive Radiators
Output Power: (AC Mode) 65W RMS per Woofer + 40W RMS per Tweeter; (Battery Mode) 60W RMS per Woofer, 40W RMS per Tweeter
Power Input: 100-240V AC; 50/60 Hz
Frequency Response: 37Hz - 20kHz
Signal-to-Noise Ratio: >80dB
Battery Type: 99.02Wh Li-ion Pack (21.6V / 4584mAh)
Charging Time: 3 Hours
Playback Time: Up to 28 hours (extendable to 34h with Playtime Boost, varies by volume/content)
Ports: AC Input, USB-C
Bluetooth®: Version 5.4, Profiles A2DP 1.4/AVRCP 1.6
Bluetooth® Frequency: 2.4 - 2.4835 GHz
Dimensions: 506.4 × 262.9 × 212.9 mm
Weight: 5.89 kg / 13 lbs
Package Includes
1× JBL Boombox 4
1× AC Power Cable (varies by region)
1× Quick Start Guide
1× Safety Sheet
1× Warranty Card
