The JBL Boombox 4 is expected to be released sometime in Q4 2024 or even Q1 of 2025, based on a 2-3 year release cycle for the JBL Boombox speaker. Although Harman Kardon has not made any official announcement on when the JBL Boombox 4 Since the JBL Boombox 3 was released in the summer of 2022, we should expect the JBL Boombox 4 sometime in Q4 of 2024. Here are the release dates for the previous JBL Boombox versions:
| JBL Boombox Speaker | Release Date |
| JBL Boombox 4 | Q4 2024 (expected) |
| JBL Boombox 3 | Q3 2022 |
| JBL Boombox 2 | Q2 2020 |
| JBL Boombox 1 | Q3 2017 |
Expected Improvements
What features would the JBL Boombox 4 bring to the table? The latest JBL Boombox, the JBL Boombox 3, currently has 136W of sound output with a 180W peak power output when connected to AC power. It’s currently the loudest Boombox available from JBL and has a built-in battery that delivers up to 24 hours of playback. Like the previous JBL Boomboxes, the JBL Boombox 3 is waterproof and dustproof (IP67 rating) and features a 3-way speaker system that delivers really nice stereo separation and deeper bass performance. We really liked the dual bass radiators in the JBL Boombox speakers which help to enhance the bass performance. The JBL Boombox 3 is also equipped with the latest Bluetooth 5.3 support with the ability to pair up to two mobile devices at the same time.
Based on the power output and performance of the JBL Boombox 3 and the previous Boomboxes, we anticipate that the JBL Boombox 4 would have roughly 160W RMS with a 200W peak power on its next iteration.
| JBL Boombox Speaker | Wattage |
| JBL Boombox 4 | Expected: 160W (200W peak) |
| JBL Boombox 3 | 136W (180W Peak) |
| JBL Boombox 2 | 80W (160W Peak) |
| JBL Boombox 1 | 40W (60W Peak) |
Possible Improvements over the JBL Boombox 3
The JBL Boombox 3 is one of the most advance speakers built by JBL that comes with a 3-way speaker system (dual tweeters and woofer) and delivers a massive 136W of power output. The battery life is also capable of providing up to 24 hours of playtime at around 50% volume, which is really incredible. The JBL Boombox 3 also comes with a new and improved silicone grip handle to provide better carrying support, and has a much more refined exterior that looks really sleek.
For a detailed review of the JBL Boombox 3, check out our guide here on the current Boombox 3 specs and sound performance.
For the JBL Boombox 4, some possible improvements would be in the sound output wattage which we would expect to be around 160W. We also anticipate that there would be improvements in the woofer for the Boombox 4, bringing it closer to the JBL PartyBox 310 which has a dedicated subwoofer for deeper bass performance. The JBL Boombox 4 would also have a similar frequency range from 40 Hz to 20 kHz as the JBL Boombox 3, as we do not expect the bass response to go any lower than 40 Hz.
With that said, the JBL Boombox 4 should also come with the latest Bluetooth codec (possibly Bluetooth 5.4 by 2024) and we hope to see support for Wi-Fi music streaming as well as SD memory card reading. We also expect that the JBL Boombox 4 to have improvements in its overall battery life (the Boombox 3 comes with a 10,000 mAh battery) and possible design improvements to give the Boombox 4 a more sleek and durable appearance.
Overall, we expect the JBL Boombox 4 to deliver much louder and powerful sound performance with longer battery life, as well as improvements in its overall design and battery capabilities.