JBL Boombox 4 – Ultimate Portable Bluetooth Speaker with AI Sound Boost, Waterproof & Long Playtime

Unbeatable sound all day long

We turn it up our way—anywhere. The all-new JBL Boombox 4 is bigger, bolder, and better than ever, with powerful JBL Pro Sound that stays loud and clear, with deep thumping bass. AI Sound Boost analyzes our music in real time and adjusts the sound to give us more power with less distortion, even when we turn it all the way up. It packs two bigger woofers, two tweeters and three passive radiators, so every track hits harder and sounds cleaner. When we want to fine-tune the vibe, we just switch between deep or vibrant punchy Bass Boost settings to match our mood. We gave the classic Boombox design a fresh upgrade—it’s larger but lighter, so we can take it wherever the party goes: the beach, the block, or the backyard. It’s IP68 waterproof and dustproof, so weather’s never a dealbreaker. And, with up to 34 hours of playtime (thanks, Playtime Boost), we’re set for the long haul. With the JBL Boombox 4, we carry the mood and the energy, everywhere we go.

General Specifications

Output power (W)

(AC mode) - 2 x 65W RMS Woofer, 2 x 40W RMS Tweeter (Battery mode) - 2 60W RMS Woofer, 2 x 40W RMS Tweeter

Power Input

100 - 240 Vac; 50/60 Hz

Signal-to-Noise Ratio

> 80 Db

Audio Specifications

Frequency Response

37Hz - 20 kHz

Transducer

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

Dimensions

Dimensions (Width x Height x Depth) (cm)

51 x 26 x 21

Dimensions (Width x Height x Depth) (in)

20 x 10 x 8

Weight (kgs)

5.89

Weight (lbs)

13

Control and Connection Specifications

Connection

AC-in, USB-C

Bluetooth profiles

A2DP 1.4, AVRCP 1.6

Bluetooth frequency

2.4 GHz - 2.4835 GHz

Bluetooth transmitted modulation

GFSK, π/4 DQPSK, 8DPSK

Bluetooth transmitter power

≤ 14dBm (EIRP)

Bluetooth Profile

A2DP 1.4, AVRCP 1.6

Bluetooth Transmitter Frequency Range (GHz)

2.4 - 2.4835

Bluetooth Transmitter Modulation

GFSK, π/4 DQPSK, 8DPSK

Bluetooth Transmitter Power

≤ 14dBm (EIRP)

Bluetooth version

5.4

Connection Ports

AC-in, USB-C

Battery

Battery Charge Time (hours)

3

Battery Type

Rechargeable Li-ion Battery Pack 99.02Wh

Cable Length (ft)

6.6

Cable Length (m)

2

Cabel Type

AC Power Cable

Maximum music playing time (hrs)

28

Features

AC power cable (type varies by regions)

Yes

AI Sound Boost

Yes

Bluetooth

Yes

JBL PartyBoost

Yes

Powerbank

Yes

Supports Auracast

Yes

Waterproof

Yes

Wireless

Yes

Dustproof

Yes

IP Code

IP68

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