Coluna estéreo portátil JBL BOOMBOX 3 preta

The JBL BOOMBOX 3 Black is a stereo portable speaker designed to deliver powerful, room-filling sound from a compact cylindrical enclosure. It features a 2 cm tweeter and a stated frequency response spanning 40–20,000 Hz, providing coverage from deep low frequencies through clear highs. The speaker supports both wired and wireless connectivity, including Bluetooth with A2DP and AVRCP profiles, operating in the 2.4–2.48 GHz band. With a signal-to-noise ratio of 80 dB and a portable form factor weighing 6.7 kg, the unit is intended for versatile use in indoor and outdoor environments.

Advantages

The design combines stereo output with a single compact cabinet, enabling strong acoustic output while keeping the unit transportable. Wireless Bluetooth connectivity allows playback from smartphones, tablets and other compatible devices without a cable connection, while wired input ensures compatibility with legacy audio sources. A wide frequency range and a dedicated tweeter contribute to clearer high frequencies and fuller low-end reproduction compared with typical small speakers. The cylindrical shape and black finish offer a neutral aesthetic that integrates into varied settings.

Suitable for

• Portable music playback outdoors and at gatherings
• Home listening in living rooms and common areas
• Bluetooth streaming from smartphones, tablets and laptops
• Use with wired audio sources when wireless is not available

Key specifications

• Speaker configuration: stereo in a single cylindrical enclosure
• Tweeter diameter: 2 cm
• Frequency response: 40–20,000 Hz
• Signal-to-noise ratio: 80 dB
• Wireless connectivity: Bluetooth (A2DP, AVRCP), 2.4–2.48 GHz
• Connectivity options: wired and wireless audio input
• Weight: 6.7 kg
• Colour: black

How to use

Place the JBL BOOMBOX 3 on a stable surface or carry it by any built-in handle if available, keeping it oriented for optimal stereo dispersion. For wireless playback, enable Bluetooth on the source device, select the speaker from the list of discoverable devices and connect using standard pairing procedures. For wired sources, use the appropriate audio cable to connect the source to the speaker’s input. Adjust playback volume on both the source device and the speaker to an appropriate level. When moving between environments, power the speaker off before disconnecting cables or packing it for transport.

Recommendations

For balanced sound and longevity, avoid placing the speaker in direct exposure to water or excessive dust. Position the speaker away from obstructions that could block the drivers, and allow moderate ventilation during extended high-volume use. Use Bluetooth within the recommended 2.4 GHz band and keep the source device within a reasonable line-of-sight distance to reduce interference.