In this review, we will be comparing LS50 Wireless 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 and Dynaudio Focus 20 XD first before getting into our more
detailed comparison.
KEF LS50 Wireless Key Specs
- 2-way Design
- 230-watt RMS Integrated Amplifier
- 11th Generation Uni-Q Driver
- 1" Hard-Dome Tweeter
- 5.25" Magnesium/aluminum alloy Woofer
- 79-28k Hz Frequency Response
- 24-bit Max Depth / 192 kHz Max Sample Rate
- Built-in 4.0 Bluetooth
- App Control Feature
- Weight:10.00kg
- Dimensions (H x W x D): 301.6" x 7.875" x 13.25"( 301.6 x 200.0 x 336.5mm )
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 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 and Focus 20 XD are 2-way speakers.
| Driver |
KEF LS50 Wireless |
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 features a 1" Aluminum Hard-Dome Tweeter and 1 x 5.25" Magnesium/aluminum alloy 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 has a frequency range of 79-28k 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's min frequency of 79Hz.
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 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's and Dynaudio Focus 20 XD's external dimensions. KEF LS50 Wireless has external dimensions of 301.6 x 200.0 x 336.5mm ( 11.875 x 7.875 x 13.25inch) 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 28.5mm less deeper than KEF LS50 Wireless but it is also 60.4mm taller.
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 is approximately 673.0cm2 / 104.3inch2 and base area of the Dynaudio Focus 20 XD is approximately 611.1cm2 / 94.7inch2. The LS50 Wireless requires 10% more surface area than the Focus 20 XD which gives it a small disadvantage on placement in tight spaces.
What's in the Box of KEF LS50 Wireless?
Here are the items that are included inside the box of LS50 Wireless:
Wireless powered speaker (Right)Wireless powered speaker (Left)Two 6.5-feet AC power cords10-feet Cat-6 interconnect speaker cable6.5-feet USB-B to USB-A cable42
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 
Ethernet Connection 
USB Port 
RCA Connection 
Subwoofer Output 
Woofer Size 
Base Surface Area