JBL Partybox 520 Splashproof Bluetooth Wireless Party Speaker BLACK - Open Box

JBL Partybox 520

The JBL PartyBox 520 delivers a powerful, full-range sound experience designed for large gatherings, events, and outdoor parties. Featuring dual 208 mm woofers and dual 25 mm dome tweeters powered by 400 W of output, it produces deep bass and crisp highs. AI Sound Boost technology analyzes your audio in real time to deliver maximum output with minimal distortion, while a dynamic lightshow adds a visual element that transforms any setting into a party atmosphere. With its integrated wheels, grippy handle, and splash-resistant build, the PartyBox 520 is easy to move and built to handle any venue. Up to 15 hours of playtime, quick charging, and a replaceable battery keep the music going longer. It also supports JBL Auracast™ for multi-speaker linking and customization via the JBL PartyBox app.

Features

400 W of room-filling JBL Pro Sound with AI Sound Boost

Dual 7.5 in (208 mm) woofers and dual 1 in (25 mm) dome tweeters for balanced audio

Futuristic lightshow with dynamic glow and strobe effects

Up to 15 hours of continuous playtime per charge

10-minute quick charge provides up to 2 additional hours of playback

Replaceable battery (sold separately) for extended runtime

Durable splash-resistant design for indoor and outdoor use

Integrated wheels and handle for easy transport

Supports JBL Auracast™ for multi-speaker connection

Customizable EQ, lighting, and effects through the JBL PartyBox app

Specifications

Audio

Output power: 400 W

Frequency response: 40 Hz – 20 kHz

Signal-to-noise ratio: > 80 dB

Transducers: 2 × 208 mm (7.5 in) woofers, 2 × 25 mm (1 in) dome tweeters

AI Sound Boost: Yes

Battery & Power

Battery type: JBL Battery 600, Li-ion 99.02 Wh

Charging time: 3 hours

Playback time: up to 15 hours

Power input: 100 – 240 V ~ 50–60 Hz

Quick charge: 10 minutes for ≈ 2 hours of playtime

Connectivity & Control

Supports Auracast™ for linking multiple JBL speakers

App control via JBL PartyBox app

Cable length: 2 m (6.6 ft)

Physical

Dimensions (W × H × D): 420 × 770 × 370 mm

Weight: 26 kg

Color: Black

Additional Features

Integrated lightshow with multiple patterns and strobe modes

Portable design with handle and wheels

Durable, splash-resistant housing

In the Box

JBL PartyBox 520 speaker

AC power cord (type varies by region)

Quick-start guide

Safety instructions and warranty card