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KEF R400b White

KEF R400b White
alaScore 87

6 reviews

Mar, 2017

alaTest has collected and analyzed 6 reviews of KEF R400b White. The average rating for this product is 4.7/5, compared to an average rating of 4.2/5 for other Speakers for all reviews.

We analyzed user and expert ratings, product age and more factors. Compared to other Speakers the KEF R400b White is awarded an overall alaScore™ of 87/100 = Very good quality.

Review analysis

(Based on 6 reviews)

Expert Reviews  

User Reviews  


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Expert review by: Greg Borrowman (

KEF R400B Subwoofer Review and Test


My opinion is that this is a brilliantly designed -- and brilliantly executed -- subwoofer.

Product Specifications


Subwoofer driver diameter:8.86
Subwoofer driver diameter (imperial):9