In this review, we will be comparing LSX II and Xeo 20, two Powered Bookshelf speakers from KEF and Dynaudio. Being Powered speakers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them. Let's have a brief look at the main features
of KEF LSX II and Dynaudio Xeo 20 first before getting into our more
detailed comparison.
KEF LSX II Key Specs
- 2-way Design
- 200-watt RMS Integrated Amplifier
- 11th Generation Uni-Q Driver
- 0.75" Hard-Dome Tweeter
- 4.5" Magnesium/Aluminium alloy Woofer
- 54-28k Hz Frequency Response
- 24-bit Max Depth / 384 kHz Max Sample Rate
- Built-in 4.2 Bluetooth
- App Control Feature
- Weight:3.60kg
- Dimensions (H x W x D): 240.0" x 6.1" x 7.1"( 240 × 155 × 180 mm )
Dynaudio Xeo 20 Key Specs
- 2-way Design
- 260-watt RMS Integrated Amplifier
- 1.1" Soft-Dome Tweeter
- 5.5" Magnesium Silicate Polymer Woofer
- 40-21k Hz Frequency Response
- 24-bit Max Depth / 96 kHz Max Sample Rate
- Built-in 4.1 Bluetooth
- Dimensions (H x W x D): 320.7" x 7.125" x 10.125"( 320.7 x 181.0 x 257.2mm )
In the following sections, we will get into more detail in order to better understand how the KEF LSX II and Dynaudio Xeo 20 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both LSX II and Xeo 20 are 2-way speakers.
| Driver |
KEF LSX II |
Dynaudio Xeo 20 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
0.75-inch
|
1.1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4.5-inch
|
1 x 5.5-inch
|
LSX II features a 0.75" Aluminum Hard-Dome Tweeter and 1 x 4.5" Magnesium/Aluminium alloy Woofer . On the other hand, the Xeo 20 features a 1.1" Coated Silk Soft-Dome Tweeter and 1 x 5.5" Magnesium Silicate Polymer Woofer .
Frequency Response
LSX II has a frequency range of 54-28k Hz whereas Xeo 20 has a frequency range of 40-21k Hz. With a minimum frequency of 40Hz, the Xeo 20 can go significantly deeper on the low side and provide stronger bass compared to the LSX II's min frequency of 54Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Cabinet Type and Port Position
Both LSX II and Xeo 20 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
KEF LSX II Port
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare KEF LSX II's and Dynaudio Xeo 20's external dimensions. KEF LSX II has external dimensions of 240 × 155 × 180 mm ( 9.5 × 6.1 × 7.1 inch) whereas Dynaudio Xeo 20 has external dimensions of 320.7 x 181.0 x 257.2mm ( 12.625 x 7.125 x 10.125inch) .
Dynaudio Xeo 20 is clearly the larger of the two speakers. Its body is 26mm wider, 80.7mm taller and 77.2mm deeper than KEF LSX II.
Below you can see the front view size comparison of KEF LSX II and Dynaudio Xeo 20 in scale.
Comparison image of KEF LSX II and Dynaudio Xeo 20 Size and External Dimensions
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the KEF LSX II is approximately 279.0cm2 / 43.2inch2 and base area of the Dynaudio Xeo 20 is approximately 465.5cm2 / 72.2inch2. The LSX II requires 40% less surface area than the Xeo 20 which gives it a small advantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of KEF LSX II and Dynaudio Xeo 20 on a Media Console
What's in the Box of KEF LSX II?
Here are the items that are included inside the box of LSX II:
2 Wireless powered speakersTwo 6.5-feet AC power cords10-feet Cat-6 interconnect speaker cableRemote control2 AAA batteries Quick Start Guide Important Safety Information Warranty Information Maintenance Guide
What's in the Box of Dynaudio Xeo 20?
Here are the items that come with the Xeo 20:
2 Powered bookshelf speakers2 GrillesTwo 8-feet AC power cordsRemote control2 AAA batteriesSetup Manual
High Frequency Response 
App-Based Control 
Height 
Base Surface Area 
Price per pair* 
Ethernet Connection 
USB Port 
HDMI Input 
Subwoofer Output 
Woofer Size 
RCA Connection