In this review, we will be comparing LS50 Wireless II and Focus 20 XD, 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 LS50 Wireless II and Dynaudio Focus 20 XD first before getting into our more
detailed comparison.
KEF LS50 Wireless II Key Specs
- 2-way Design
- 380-watt RMS( 760-watt Peak) Integrated Amplifier
- 12th Generation Uni-Q Driver
- 1" Hard-Dome Tweeter
- 5.25" Aluminum Woofer
- 45-28k Hz Frequency Response
- 32-bit Max Depth / 384 kHz Max Sample Rate
- Built-in 4.2 Bluetooth
- App Control Feature
- Weight:10.00kg
- Dimensions (H x W x D): 277.8" x 7.875" x 12.6875"( 277.8 x 200.0 x 322.3mm )
Dynaudio Focus 20 XD Key Specs
- 2-way Design
- 300-watt RMS Integrated Amplifier
- 1.1" Soft-Dome Tweeter
- 6.7" Magnesium Silicate Polymer Woofer
- 39-24k Hz Frequency Response
- 24-bit Max Depth / 192 kHz Max Sample Rate
- Optional Bluetooth
- Dimensions (H x W x D): 362.0" x 7.8125" x 12.125"( 362.0 x 198.4 x 308.0mm )
In the following sections, we will get into more detail in order to better understand how the KEF LS50 Wireless II and Dynaudio Focus 20 XD 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 LS50 Wireless II and Focus 20 XD are 2-way speakers.
| Driver |
KEF LS50 Wireless II |
Dynaudio Focus 20 XD |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1.1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 6.7-inch
|
LS50 Wireless II features a 1" Aluminum Hard-Dome Tweeter and 1 x 5.25" Aluminum Woofer . On the other hand, the Focus 20 XD features a 1.1" Coated-Silk Soft-Dome Tweeter and 1 x 6.7" Magnesium Silicate Polymer Woofer .
Frequency Response
LS50 Wireless II has a frequency range of 45-28k Hz whereas Focus 20 XD has a frequency range of 39-24k Hz. With a minimum frequency of 39Hz, the Focus 20 XD can go significantly deeper on the low side and provide stronger bass compared to the LS50 Wireless II's min frequency of 45Hz.
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 LS50 Wireless II and Focus 20 XD 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.
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 LS50 Wireless II's and Dynaudio Focus 20 XD's external dimensions. KEF LS50 Wireless II has external dimensions of 277.8 x 200.0 x 322.3mm ( 10.9375 x 7.875 x 12.6875inch) whereas Dynaudio Focus 20 XD has external dimensions of 362.0 x 198.4 x 308.0mm ( 14.25 x 7.8125 x 12.125inch) .
Dynaudio Focus 20 XD is 1.6mm narrower and 14.3mm less deeper than KEF LS50 Wireless II but it is also 84.2mm taller.
Below you can see the front view size comparison of KEF LS50 Wireless II and Dynaudio Focus 20 XD in scale.
Comparison image of KEF LS50 Wireless II and Dynaudio Focus 20 XD 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 LS50 Wireless II is approximately 644.6cm2 / 99.9inch2 and base area of the Dynaudio Focus 20 XD is approximately 611.1cm2 / 94.7inch2. The LS50 Wireless II requires 5% more surface area than the Focus 20 XD which gives it a small disadvantage 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 LS50 Wireless II and Dynaudio Focus 20 XD on a Media Console
What's in the Box of KEF LS50 Wireless II?
Here are the items that are included inside the box of LS50 Wireless 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
What's in the Box of Dynaudio Focus 20 XD?
Here are the items that come with the Focus 20 XD:
2 Powered loudspeakers2 AC power cordsRemote controlSetup Manual
High Frequency Response 
App-Based Control 
Height 
Price per pair* 
Ethernet Connection 
USB Port 
3.5mm Connection 
HDMI Input 
Subwoofer Output 
Woofer Size 
Base Surface Area 
RCA Connection