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.
| Key Specs | KEF LSX II | Dynaudio Xeo 20 |
|---|
| Design | 2-way | 2-way |
|---|
| Built-in amplifier | 200-watt RMS | 260-watt RMS |
|---|
| Uni-Q driver | 11th Generation Uni-Q | — |
|---|
| Tweeter | 0.75" Hard-Dome | 1.1" Soft-Dome |
|---|
| Woofer | 4.5" Magnesium/Aluminium alloy | 5.5" Magnesium Silicate Polymer |
|---|
| Frequency response | 54-28k Hz | 40-21k Hz |
|---|
| Max depth / sample rate | 24-bit / 384 kHz | 24-bit / 96 kHz |
|---|
| Bluetooth | Built-in 4.2 | Built-in 4.1 |
|---|
| App control | Yes | — |
|---|
| Weight | 3.60kg / 7.9lbs | — |
|---|
| Dimensions (H x W x D) | 9.5" x 6.1" x 7.1"
240 × 155 × 180 mm | 12.625" x 7.125" x 10.125"
320.7 x 181.0 x 257.2mm |
|---|
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
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Drivers
Both LSX II and Xeo 20 are 2-way speakers.
KEF LSX IIDynaudio Xeo 20
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| 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.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. 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
The size of a speaker can sometimes be 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 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 speakers
- Two 6.5-feet AC power cords
- 10-feet Cat-6 interconnect speaker cable
- Remote control
- 2 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 speakers
- 2 Grilles
- Two 8-feet AC power cords
- Remote control
- 2 AAA batteries
- Setup Manual