TheJBL Boombox 4 completely shatters expectations, pumping out a massive, room-shaking210W RMS of power backed by an advanced7-driver acoustic grid. Equipped with continuousAI Sound Boost processing and a rugged, redesigned chassis that is12% lighter than its predecessor, it balances raw brute force with flawless mobile execution.
Unmatched 210W Power Profile: Features a structural redesign delivering nearly 50% more output on battery power compared to the Boombox 3, resulting in uncompromised volume unplugged.
Evolved 7-Driver Baseline: Packs two massive 5-inch woofers, two high-fidelity tweeters, and a specialized triple-passive radiator layout for jaw-dropping low-end tracking down to 37Hz.
Dual-Mode Customizable Bass Boost: Toggle instantly betweenDeep Bass andPunchy Bass profiles, highlighted by striking orange or white LED-lit horn logos on the passive radiators.
Epic 34-Hour Continuous Battery Grid: Enjoy 28 hours of typical runtime, hitting up to 34 hours with Playtime Boost, all protected by a future-proof, user-replaceable battery slot.
Elite IP68 Weather Protection: Fully dust-tight and completely submersible in water, engineered to fear absolutely nothing from pool falls to coastal sandstorms.
KSh 63,000
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Take absolute command of your music with the most capable, durable, and technologically advanced portable powerhouse ever crafted. TheJBL Boombox 4 wireless speaker marks a massive architectural breakthrough in mobile audio. Unveiling a staggering210 Watts RMS of peak system authority on AC power—and sustaining an identical, uncompressed200 Watts RMS while running wirelessly on battery—this model eliminates the heavy output drops that plagued older portable designs. Tailored perfectly for high-end setups and audiophile gatherings across Nairobi, it offers a beautifully refined, high-output listening experience that rules the block, the backyard, or the beach.
Ditching the older single-subwoofer blueprint, the Boombox 4 leverages a high-tech stereo configuration comprised oftwo 5-inch (123mm) high-excursion woofers working alongside dual 0.75-inch (20mm) tweeters. This array is structurally anchored by an innovative triple-passive radiator layout (two side-mounted circular radiators plus a third rear-firing racetrack radiator), sending real physical bass extension plummeting down to a subterranean37Hz. To keep this intense power clean, an embeddedAI Sound Boost algorithm tracks driver movement and thermal thresholds in real time via continuous machine learning, providing maximum sonic output with practically zero distortion.
Because different musical genres require distinct low-frequency textures, the Boombox 4 features a tactile, top-mountedBass Boost button offering two dedicated custom modes. Standard playback delivers the signature, pristine JBL Pro Sound curve. Tap the selector once to enterDeep Bass mode, forcing the 5-inch woofers and triple radiators to generate a rich, room-filling low-end rumble while the radiator horn marks glow an activeorange. Tap it again to cycle intoPunchy Bass mode, shifting the illumination to a crispwhite and tightening up the response for fast, energetic Amapiano, rock, or electronic rhythms.
Despite pushing far more acoustic energy and structural volume, intelligent material mapping allows the Boombox 4 to weigh in at just5.89 kg (13 lbs)—making it nearly a full kilogram (12%) lighter than the Boombox 3 for drastically improved one-handed portability. Its exterior is wrapped tightly in a heavy-duty recycled fabric and impact-resistant rubberized casing that boasts a certifiedIP68 weather resistance rating. It is completely sealed against fine trail dust or sand and can survive total submersion in up to 1 meter of water for 30 minutes effortlessly.
Never fret over standard hardware degradation or battery longevity. The Boombox 4 is built with auser-replaceable battery slot, letting you swap the internal cell in three simple steps to keep your investment running like new for a decade. The massive 99.02Wh core provides up to28 hours of native runtime, expanding to34 hours with Playtime Boost enabled, while operating as a high-speedUSB-C power bank to charge your mobile gear. For purists, that same USB-C terminal supportswired lossless digital audio decoding straight from your computer or smartphone. When it’s time to scale up the audio footprint, nativeAuracast™ connectivity lets you link multiple compatible systems together into massive wireless stereo grids.
Model System Name: JBL Boombox 4
Acoustic Driver Topology: High-Output 7-Driver Stereo Array with Triple Passive Radiators
Rated Output Power (AC Mode): 210 Watts RMS (2 x 65W Woofers + 2 x 40W Tweeters)
Rated Output Power (Battery Mode): 200 Watts RMS (2 x 60W Woofers + 2 x 40W Tweeters)
Internal Transducer Sizes: 2 x 5-inch (123mm) Woofers + 2 x 0.75-inch (20mm) Tweeters
System Frequency Response: 37 Hz – 20,000 Hz
Acoustic Signal-to-Noise Ratio (SNR): > 80 dB
Wireless Tech Infrastructure: Bluetooth® Version 5.4
Bluetooth Profiles Supported: A2DP 1.4 | AVRCP 1.6
Multi-Speaker Link Protocol: Auracast™ Network Broadcast & Wireless Stereo Pairing
Equalizer & Smart Control App: JBL One Smartphone Application
Wired Audio Interface Profile: Lossless Digital Audio Input via USB-C Port
Environmental Protection Rating: IP68 Certified Dustproof & Submersible Waterproof
USB Charging Out Interface: Type-C Port Power Bank | High-Speed Output Profile
Internal Storage Battery Pack: Rechargeable Lithium-Ion Polymer 99.02 Wh Core
Battery Charge Duration Window: Approximately 3 Hours from 0 to 100%
Maximum Audio Playtime: Up to 28 Hours Standard (Stretches to 34 Hours via Playtime Boost)
Continuous AC Main Power Input: 100 – 240V AC ~ 50/60Hz Interlocked Transformer
Physical Enclosure Dimensions (W x H x D): 51.0 cm x 26.0 cm x 21.0 cm (20.0″ x 10.0″ x 8.0″)
Net Speaker Component Weight: 5.89 Kilograms (13.0 lbs)
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