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  5. Boombox 4
  6. Review

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
Battery Powered
Yes
Speakerphone
No
Voice Assistant
No
Bluetooth
Yes
Wi-Fi
No
 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.

Check Price

Black
SEE PRICE
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Blue
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Squad
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Test Results

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Design
Style
- SAMPLE -
Get Insider Access for pictures & test results
JBL Boombox 4 Style Photo Sample
RGB LightsLockedLocked
0.0
Portability
- SAMPLE -
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JBL Boombox 4 Dimensions Photo Sample
Volume
LockedLock in³ (Lock cm³)
Weight
LockedLock lbs (Lock kg)
Power Source
LockedLocked
One-Hand Carry
LockedLocked
0.0
Build Quality
- SAMPLE -
Get Insider Access for pictures & test results
JBL Boombox 4 Build Quality Photo Sample
Material Quality
LockedLocked
Water Resistance
LockedLocked
Dust Resistance
LockedLocked
Impact Resistance
LockedLocked
Floats In Water
LockedLocked
0.0
Controls
- SAMPLE -
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JBL Boombox 4 Controls Photo Sample
- SAMPLE -
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JBL Boombox 4 Controls Photo 2 Sample
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
- SAMPLE -
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JBL Boombox 4 In The Box Photo Sample
Sound
0.0
Frequency Response Accuracy
- SAMPLE -
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See details on graph tool
Slope
LockedLock
Std. Err.
LockedLock dB
Low-Frequency Extension
LockedLock Hz
High-Frequency Extension
LockedLock kHz
LEARN ABOUT FREQUENCY RESPONSE ACCURACY 
Raw Frequency Response
- SAMPLE -
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See details on graph tool
Binaural Recording @ 1m
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Binaural Recording @ 2m
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0.0
Soundstage
- SAMPLE -
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See details on graph tool
Directivity Index
LockedLock dB
Stereo
LockedLocked
LEARN ABOUT SOUNDSTAGE 
0.0
Dynamics
- SAMPLE -
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See details on graph tool
SPL @ Max Volume
LockedLock dB SPL
DRC @ Max Volume
LockedLock dB
LEARN ABOUT DYNAMICS 
Active Features
0.0
Battery
Battery Life
LockedLock hrs
Charge Time
LockedLock hrs
Power Saving
LockedLocked
Charging Port
LockedLocked
Battery Powered
LockedLocked
LEARN ABOUT BATTERY 
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
LEARN ABOUT VOICE ASSISTANT 
0.0
App
- SAMPLE -
Get Insider Access for pictures & test results
JBL Boombox 4 App Picture Sample
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
LEARN ABOUT BLUETOOTH 
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
LEARN ABOUT WI-FI 
Retailers
Retailers' pricesAmazon.co.jp
Black  Boombox 4
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Blue  Boombox 4
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Squad  Boombox 4
SEE PRICE

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Comments

  1. Product
Active 5 days ago
 ·  • Posted 1 month ago

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
    1
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    Alex2893
     6
     • Posted 5 days ago

    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.

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  2.  • Posted 5 days ago

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

  3. 2
    1
    0
    1
    0
     
    eiglow_
     160
     • Posted 5 days ago

    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…

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  4.  • Posted 11 days ago

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

  5. 2
    1
    0
    1
    0
     Dylan Crete • Posted 13 days ago
    Oct 07, 2025 05:41 PM By ashkank
    19

    please also test partybox 720

    we’ll be buying it ASAP!

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  6. 2
    1
    0
    1
    0
    ashkank
     19
     • Posted 13 days ago

    please also test partybox 720

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  7. 2
    1
    0
    1
    0
     
    Alex2893
     6
     • Posted 14 days ago

    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?

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  8.  • Posted 19 days ago

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

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