Name: JBL Boombox 4 Black
Brand: JBL
SKU: 964852
Price: 399 EUR
Availability: OutOfStock
Rating: 9.4 (6 reviews)

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Ordered before tomorrow 23:59, delivered monday for free

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Product information
Similar and better products
Reviews
Insurance
Specifications

Product information

Key specs

Maximum battery life

34 hours

Weight

8,16 kg

Very large (more than 40cm)

Waterproof

IP68

Show all specifications

Ask me anything about this product

Our digital expert will help you, but it can sometimes make mistakes, like humans do.

Pros and cons

According to our Bluetooth speaker expert

Choose your bass: you can choose from different bass settings with the Bass Boost button.
Even in the rain: you can use the speaker outdoors without worry thanks to the waterproof design.
Listen for days: you can listen to music for 28 hours without charging the speaker in between.
Connects via Auracast only: you can only pair this speaker with other speakers that also have Auracast.

Description

Choose your favorite bass sound with the JBL Boombox 4 Black. This Bluetooth speaker has a Bass Boost button with 2 bass settings. You can choose Deep Bass or Punchy Bass. This way, you’ll hear every beat clearly or get tight bass. The speaker is waterproof, so rain isn’t a problem. You can also clean it under the faucet. The combination of 28 hours of battery life and 6 hours of Playtime Boost gives you extra-long listening pleasure. That means you can listen to music for multiple days.

Visit one of our stores and see this product in real life.

Tips for using this product

Included by default

Power cord
Quick start guide
Safety Data Sheet
Warranty card

Similar and better products

- Current product
  JBL Boombox 4 Black
- JBL Boombox 4 Squad
- Retail price
  € 499,99
  € 399,-
- Retail price
  € 499,99
  € 399,-

Reviews
Sound reproduction
- Stereo
- Stereo

Maximum battery life
- 34 hours
- 34 hours
Multi-speaker connectivity technology
- Auracast
- Auracast

Show full comparison

Reviews

Rating

5 stars

4 stars

3 stars

2 stars

1 star

Most helpful reviews

Review is 9,7 out of 10.

A top portable speaker with wonderful bass

Good sound
Deep bass
Tough!
Striking design must appeal to you

Sometimes products are simply good, and this one is no exception. A truly impressive device to behold. With a simple press of the Bluetooth button, it pairs with your phone in seconds. Playing Eefje your favorite playlist is a breeze, and then the party can begin. The music is crystal clear, and the birds, in particular, come through beautifully. Of course, with the first banger, you can already hear the bass rumbling through the room. With the double bass boost function, you can hear it go even lower and deeper. Truly amazing. Personally, I thought the lighting behind the exclamation marks on the subwoofers was a nice touch.

This makes this speaker stand out in both sound and appearance. I can highly recommend it. A fantastic piece of technology that you can carry around in your hand.

Review by:
RoyyoR
Date:
9 December 2025
Translation:
Automatically translated from Dutch

Review is 9,7 out of 10.

Powerful speaker with the typical JBL sound

Powerful sound with deep bass
No sound/bass distortion
Long battery life
8 kg is quite heavy

I was able to properly test this speaker at a pool party. The sound carries far in open air. The bass is deep and the battery lasts a long time. However, at full power with bass boost, it doesn't last as long. You do have to plug it into the wall socket to charge it, though it doesn't charge much at maximum volume.

Because then all the energy goes to the sound instead of the battery.

Review by:
Jimmy Aerts
Date:
13 May 2026
Translation:
Automatically translated from Dutch

Review is 10 out of 10.

A real cracker of a speaker

Wonderful speaker with full sound
Good bass
Heavy

Our incredibly beautiful speaker with a matching sound. Even unpacking it, you can tell everything has been thought of and that it's very practical. With a simple button press, you can connect the speaker to your phone and it's ready to go for the best parties. I can highly recommend this product and advise you to get one soon. What I like most is the product and the materials they've used for this speaker. You can clearly see that they've thought of everything and that you're dealing with a high-quality product.

Review by:
Roy
Date:
19 December 2025
Translation:
Automatically translated from Dutch

Insure your Bluetooth speaker

Coolblue takes care of everything, from taking out an insurance to repairs
For almost all accidents
More coverage in case of damage than your standard warranty
No deductible

How do I insure my Bluetooth speaker?

First, add your Bluetooth speaker to your shopping cart. On the next page, choose the Protection Plan below. You always have a 30-day return window and pay no deductible in case of damage.

2-year Protection Plan
€ 14,99
one-time
3-year Protection Plan
€ 30,99
one-time

Specifications

Product

Product
	Product number	964852
	Manufacturer code	JBLBOOMBOX4BLKEP
	Brand	JBL
	Warranty	2 years
	Processing of your defect	Via Coolblue

Physical properties

Physical properties
	Speaker type	Bluetooth speaker
	Width	50,64 cm
	Depth	21,29 cm
	Height	26,29 cm
	Wireless speaker size	Very large (more than 40cm)
	Weight	8,16 kg
	Color	Black

Power supply

Power supply
	Maximum battery life	34 hours
	Average battery life	28 hours

Water resistance

Water resistance
	Water resistance	Waterproof
	Waterproofness certification	IP certification
	IP certification	IP68

Network and streaming

Network and streaming
	Multi-room audio
	Multi-speaker connectivity technology	Auracast
	Sound reproduction	Stereo

This is the one

JBL Boombox 4 Black

Review is 9,4 out of 10, based on 6 reviews.

anything for a smile

Ordered before tomorrow 23:59, delivered monday for free

JBL Boombox 4 Black

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