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JBL Boombox 4  Speaker Review

Notice: Below are the preliminary measurements for the JBL Boombox 4. Insiders have early access to the test results, and some measurements may be updated before publication.

The full review will be published in a few days.

Tested using Methodology v0.8 
JBL Boombox 4
 6

Changelog

  1.  Updated Oct 16, 2025: Early access published.
  2.  Updated Oct 10, 2025: Our testers have started testing this product.
  3.  Updated Oct 01, 2025: The product has arrived in our lab, and our testers will start evaluating it soon.
  4.  Updated Sep 18, 2025: We've purchased the product and are waiting for it to arrive in our lab.

Test Results

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RATINGS
Category:
All
Design
Style
RGB LightsLockedLocked
0.0
Portability
Volume
LockedLock in³ (Lock cm³)
Weight
LockedLock lbs (Lock kg)
Power Source
LockedLocked
One-Hand Carry
LockedLocked
0.0
Build Quality
Material Quality
LockedLocked
Water Resistance
LockedLocked
Dust Resistance
LockedLocked
Impact Resistance
LockedLocked
Floats In Water
LockedLocked
0.0
Controls
Ease Of Use
LockedLocked
Feedback
LockedLocked
Music Play/Pause
LockedLocked
Call Answer/End
LockedLocked
Volume Up/Down
LockedLocked
Track Next/Previous
LockedLocked
Microphone On/Off
LockedLocked
Additional Controls
LockedLocked
In The Box
Sound
0.0
Frequency Response Accuracy
- SAMPLE -
Get Insider Accessfor graphs & test results
See details on graph tool
Slope
LockedLock
Std. Err.
LockedLock dB
Low-Frequency Extension
LockedLock Hz
High-Frequency Extension
LockedLock kHz
Raw Frequency Response
- SAMPLE -
Get Insider Accessfor graphs & test results
See details on graph tool
Binaural Recording @ 1m
GET INSIDER ACCESSto hear audio samples
Binaural Recording @ 2m
GET INSIDER ACCESSto hear audio samples
0.0
Soundstage
- SAMPLE -
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See details on graph tool
Directivity Index
LockedLock dB
Stereo
LockedLocked
0.0
Dynamics
- SAMPLE -
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See details on graph tool
SPL @ Max Volume
LockedLock dB SPL
DRC @ Max Volume
LockedLock dB
Active Features
0.0
Battery
Battery Life
LockedLock hrs
Charge Time
LockedLock hrs
Power Saving
LockedLocked
Charging Port
LockedLocked
Battery Powered
LockedLocked
0.0
Voice Assistant
Alexa
LockedLocked
Google Assistant
LockedLocked
Speakerphone
LockedLocked
Siri
LockedLocked
Voice Assistant
LockedLocked
Voice Activation
LockedLocked
Microphone Mute
LockedLocked
Far-Field Performance
LockedLocked
Ambient Noise Performance
LockedLocked
0.0
App
App Name
LockedLocked
iOS
LockedLocked
Android
LockedLocked
EQ
LockedLocked
Stereo Pair Mode
LockedLocked
Party Mode
LockedLocked
Multi-Room
LockedLocked
Connectivity
Wired
Aux Input
LockedLocked
USB Audio
LockedLocked
Other Ports
LockedLocked
0.0
Bluetooth
Bluetooth
LockedLocked
Bluetooth Version
LockedLocked
Bluetooth iOS Latency
LockedLock ms
Bluetooth Android Latency
LockedLock ms
Bluetooth Range
LockedLock ft (Lock m)
Multi-Device Pairing
LockedLocked
0.0
Wi-Fi
Wi-Fi Version
LockedLocked
Wi-Fi Frequency Band
LockedLocked
Wi-Fi
LockedLocked
Apple AirPlay
LockedLocked
AirPlay Latency
LockedN/A
Google Chromecast
LockedLocked
Chromecast Latency
LockedN/A
Retailers
Retailers' pricesAmazon.co.jp
Black  Boombox 4
SEE PRICE
Blue  Boombox 4
SEE PRICE
Squad  Boombox 4
SEE PRICE

Comments

  1. Product

JBL Boombox 4: Main Discussion

Let us know why you want us to review the product here, or encourage others to vote for this product.

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  1. 2
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    Wow only 49hz that is rather disappointing. Everyone on YouTube was saying it plays much deeper than the boombox 3 but that went down to 46hz according to its review here. Although we don’t know if that 49hz measurement was with the speaker in its deep eq or just the standard setting. that could make a difference. Also, if you look at the graph of the bass it’s a very sculpted bass. One note bass wonder.

  2. Early access to our full test results is now available for Insiders! Become an insider to check it out here.

  3. 2
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    I’m definitely curious to see the frequency response and dynamics performance, given that the boombox 3 is a 3-way design, and the boombox 4 is now 2-way as far as I can tell…

  4. Our testers have started testing this product; is there anything specific you’re looking to see? Let us know in this thread.

  5. 2
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    please also test partybox 720

    we’ll be buying it ASAP!

  6. 2
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    please also test partybox 720

  7. 2
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    Can you test for distortion? There are a lot of videos on youtube saying the boombox 4 can distort pretty heavy in the low bass even at moderate levels?

  8. The product has arrived in our lab, and our testers will start evaluating it soon.