In this review, we will be comparing Genelec G Three and LSX, two Powered Bookshelf speakers from Genelec 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 Genelec G Three and KEF LSX first before getting into our more
detailed comparison.
In the following sections, we will get into more detail in order to better understand how the Genelec G Three and KEF LSX 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 Genelec G Three and LSX are 2-way speakers.
| Driver |
Genelec G Three |
KEF LSX |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
0.75-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.1-inch
|
1 x 4.5-inch
|
Genelec G Three features a 0.75" Dome Tweeter and 1 x 5.1" Cone Woofer with a Crossover frequency at 3000Hz. On the other hand, the LSX features a 0.75" Aluminum Hard-Dome Tweeter and 1 x 4.5" Magnesium/Aluminium alloy Woofer .
Frequency Response
Genelec G Three has a frequency range of 54-20k Hz whereas LSX has a frequency range of 59-28k Hz. With a minimum frequency of 54Hz, the Genelec G Three can go significantly deeper on the low side and provide stronger bass compared to the LSX's min frequency of 59Hz.
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 Genelec G Three and LSX 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 Genelec G Three's and KEF LSX's external dimensions. Genelec G Three has external dimensions of 299 x 189 x 178 mm ( 11.8 x 7.4 x 7) whereas KEF LSX has external dimensions of 239.7 x 155.6 x 180mm ( 9.4375 x 6.125 x 7.1inch) .
KEF LSX is 33.4mm narrower and 59.3mm shorter than Genelec G Three but it is also 2mm deeper.
Below you can see the front view size comparison of Genelec G Three and KEF LSX in scale.
Comparison image of Genelec G Three and KEF LSX 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 Genelec G Three is approximately 336.4cm2 / 52.1inch2 and base area of the KEF LSX is approximately 365.7cm2 / 56.7inch2. The Genelec G Three requires 8% less surface area than the LSX 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 Genelec G Three and KEF LSX 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 Genelec G Three weighs 5.00kg / 11lbs and the KEF LSX weighs 3.50kg / 7.7lbs. This makes the Genelec G Three 43% heavier than the LSX.
Here is a comparison of how Genelec G Three and LSX's weights compare with the average, max and min weights in Powered Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Genelec G Three?
Here are the items that are included inside the box of Genelec G Three:
Genelec G Three 2-Way Powered Bookshelf Speaker (Polar White, Single)Iso-Pod Stand5.9-feet Power Cable
What's in the Box of KEF LSX?
Here are the items that come with the LSX:
2 Powered wireless audio speakerTwo 6.5-feet AC power cords10-feet Ethernet cableRemote control (CR2032 3V battery pre-installed)Maintenance GuideSpecificationsWarranty InformationImportant Safety Information
 Woofer Size |
5.1 inches
vs
4.5 inches
|
Larger woofer |
| Low Frequency Response |
54 Hz
vs
59 Hz
|
Generates deeper bass |
 Base Surface Area |
336cm2 (189x178mm)
vs
365cm2 (155x180mm)
|
Takes less floor space |
 RCA Connection |
Yes
vs
No
|
Connection via RCA input |
 XLR Connection |
Yes
vs
No
|
Connection via XLR input |
 High Frequency Response |
28k Hz
vs
20k Hz
|
Generates higher frequency |
 Handheld Remote |
Yes
vs
No
|
Control the speaker by the included RC |
 App-Based Control |
Apple iOS, Android
vs
None
|
Control the speaker via an app |
 Height |
239mm
vs
299mm
|
Easier to fit in smaller spaces |
 Price per pair* |
1250USD
vs
1390USD
|
costs less (*prices may change depending on the seller, location and time) |
 Ethernet Connection |
Yes
vs
No
|
High quality streaming over Ethernet |
 USB Port |
Charge only
vs
No
|
USB port adds flexibility |
 3.5mm Connection |
Yes
vs
No
|
Connection via 3.5mm AUX input |
 Digital Input |
Optical
vs
No
|
Connect digital inputs directly |
| General |
Genelec G Three |
KEF LSX |
| Brand |
Genelec |
KEF |
| Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
| Frequency Response |
54-20k Hz |
59-28k Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
100-watt RMS |
200-watt RMS |
| Max Bit Depth |
N/A |
24-bit |
| Max Sample Rate |
N/A |
96 kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.1" |
4.5" |
| Woofer Composition |
Cone |
Magnesium/Aluminium alloy |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
0.75" |
0.75" |
| Tweeter Type |
Dome |
Hard-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
3000Hz |
n/a |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
299.0mm (11.8") |
239.7mm (9.4") |
| Width |
189.0mm (7.4") |
155.6mm (6.1") |
| Depth |
178.0mm (7") |
180.0mm (7.1") |
| Weight |
5.00kg (11lbs) |
3.50kg (7.7lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
Aluminum |
n/a |
| Available Colors |
White,Black,Raw(Aluminum) |
Black, Olive Green, Gloss White |
| Mounting Bracket |
No |
No |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Aux Inputs |
RCA,XLR |
3.5mm |
| USB Port |
No |
Charge only |
| Phone Input |
No |
No |
| Subwoofer Output |
n/a |
Wired |
| Digital Input |
No |
Optical |
| HDMI Input |
No |
No |
| Headphone Jack |
No |
No |
| Ethernet Port |
No |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
1 Year |
| Labor Warranty |
5 Years |
1 Year |