In this review, we will be comparing Focus 10 and LSX II, two Powered Bookshelf speakers from Dynaudio and KEF. 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 Dynaudio Focus 10 and KEF LSX II first before getting into our more
detailed comparison.
Dynaudio Focus 10 Key Specs
- 2-way Design
- 390-watt RMS Integrated Amplifier
- 1.1" Soft-Dome Tweeter
- 5.5" MSP Woofer
- 43-22k Hz Frequency Response
- 24-bit Max Depth / 192 kHz Max Sample Rate
- Built-in 4.2 Bluetooth
- App Control Feature
- Weight:7.50kg
- Dimensions (H x W x D): 315.0" x 7-1/8" x 10-1/4"( 315.0 x 180.0 x 261.0mm )
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 )
In the following sections, we will get into more detail in order to better understand how the Dynaudio Focus 10 and KEF LSX II 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 Focus 10 and LSX II are 2-way speakers.
| Driver |
Dynaudio Focus 10 |
KEF LSX II |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1.1-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.5-inch
|
1 x 4.5-inch
|
Focus 10 features a 1.1" Cerotar Soft-Dome Tweeter and 1 x 5.5" MSP Woofer with a Crossover frequency at 2200 Hz. On the other hand, the LSX II features a 0.75" Aluminum Hard-Dome Tweeter and 1 x 4.5" Magnesium/Aluminium alloy Woofer .
Frequency Response
Focus 10 has a frequency range of 43-22k Hz whereas LSX II has a frequency range of 54-28k Hz. With a minimum frequency of 43Hz, the Focus 10 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.
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 Dynaudio Focus 10's and KEF LSX II's external dimensions. Dynaudio Focus 10 has external dimensions of 315.0 x 180.0 x 261.0mm ( 12-3/8-inch x 7-1/8-inch x 10-1/4-inch) whereas KEF LSX II has external dimensions of 240 × 155 × 180 mm ( 9.5 × 6.1 × 7.1 inch) .
Dynaudio Focus 10 is clearly the larger of the two speakers. Its body is 25mm wider, 75mm taller and 81mm deeper than KEF LSX II.
Below you can see the front view size comparison of Dynaudio Focus 10 and KEF LSX II in scale.
Comparison image of Dynaudio Focus 10 and KEF LSX II 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 Dynaudio Focus 10 is approximately 469.8cm2 / 72.8inch2 and base area of the KEF LSX II is approximately 279.0cm2 / 43.2inch2. The Focus 10 requires 68% more surface area than the LSX II 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 Dynaudio Focus 10 and KEF LSX II on a Media Console
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The Dynaudio Focus 10 weighs 7.50kg / 16.5lbs and the KEF LSX II weighs 3.60kg / 7.9lbs. This makes the Focus 10 108% heavier than the LSX II.
Here is a comparison of how Focus 10 and LSX II's weights compare with the average, max and min weights in Powered Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of KEF LSX II?
Here are the items that come with the 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
 Woofer Size |
5.5 inches
vs
4.5 inches
|
Larger woofer |
|
Low Frequency Response |
43 Hz
vs
54 Hz
|
Generates deeper bass |
 RCA Connection |
Yes
vs
No
|
Connection via RCA input |
 High Frequency Response |
28k Hz
vs
22k Hz
|
Generates higher frequency |
 Handheld Remote |
Yes
vs
No
|
Control the speaker by the included RC |
 Height |
240mm
vs
315mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
279cm2
vs
469cm2
|
Takes less floor space |
 Price per pair* |
1299USD
vs
5500USD
|
costs less (*prices may change depending on the seller, location and time) |
 3.5mm Connection |
Yes
vs
No
|
Connection via 3.5mm AUX input |
 HDMI Input |
ARC
vs
No
|
Connect HDMI sources directly |
| General |
Dynaudio Focus 10 |
KEF LSX II |
| Brand |
Dynaudio |
KEF |
| Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
| Frequency Response |
43-22k Hz |
54-28k Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
390-watt RMS |
200-watt RMS |
| Max Bit Depth |
24-bit |
24-bit |
| Max Sample Rate |
192 kHz |
384 kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.5" |
4.5" |
| Woofer Composition |
MSP |
Magnesium/Aluminium alloy |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
1.1" |
0.75" |
| Tweeter Type |
Soft-Dome |
Hard-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2200 Hz |
n/a |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
315.0mm (12.4") |
240.0mm (9.4") |
| Width |
180.0mm (7.1") |
155.0mm (6.1") |
| Depth |
261.0mm (10.3") |
180.0mm (7.1") |
| Weight |
7.50kg (16.5lbs) |
3.60kg (7.9lbs) |
| Enclosure |
Acoustic Suspension |
Bass Reflex |
| Available Colors |
Black High Gloss, White High Gloss, Blonde Wood, Walnut Wood |
Carbon Black, Mineral White, Cobalt Blue, Lava Red, and Soundwave |
| Mounting Bracket |
No |
No |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Aux Inputs |
2x RCA |
3.5mm |
| USB Port |
Service only |
USB-C (connects to your computer) |
| Phone Input |
No |
No |
| Subwoofer Output |
mono-RCA |
Wired |
| Digital Input |
1x Toslink, 1x RCA |
Optical |
| HDMI Input |
No |
ARC |
| Headphone Jack |
No |
No |
| Ethernet Port |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
|
1 Year |
| Labor Warranty |
|
1 Year |