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TechSphere KE
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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.
Power Input
100 - 240 Vac; 50/60 Hz
Signal-to-Noise Ratio
> 80 Db
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
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 (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
Bluetooth frequency
2.4 GHz - 2.4835 GHz
Connection
AC-in, USB-C
Connection Ports
AC-in, USB-C
Bluetooth Profile
A2DP 1.4, AVRCP 1.6
Bluetooth profiles
A2DP 1.4, AVRCP 1.6
Bluetooth Transmitter Frequency Range (GHz)
2.4 - 2.4835
Bluetooth Transmitter Modulation
GFSK, π/4 DQPSK, 8DPSK
Bluetooth transmitted modulation
GFSK, π/4 DQPSK, 8DPSK
Bluetooth Transmitter Power
≤ 14dBm (EIRP)
Bluetooth transmitter power
≤ 14dBm (EIRP)
Bluetooth version
5.4
Cabel Type
AC Power Cable
Cable Length (ft)
6.6
Cable Length (m)
2
Battery Type
Rechargeable Li-ion Battery Pack 99.02Wh
Battery Charge Time (hours)
3
Maximum music playing time (hrs)
28
Dustproof
Yes
AC power cable (type varies by regions)
Yes
IP Code
IP68
Powerbank
Yes
Wireless
Yes
Waterproof
Yes
Supports Auracast
Yes
Bluetooth
Yes
AI Sound Boost
Yes
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
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