KEF LSX II vs KEF LS LUXE Comparison

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KEF LSX II

Powered Bookshelf | 54-28k Hz

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KEF LS LUXE

Powered Bookshelf | 42-28k Hz

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KEF LSX II

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KEF LS LUXE

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KEF LSX II

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KEF LS LUXE

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KEF LSX II vs KEF LS LUXE Speaker Comparison

In this review, we will be comparing LSX II and LS LUXE, two Powered Bookshelf speakers by 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 KEF LSX II and KEF LS LUXE first before getting into our more detailed comparison.

Key Specs	KEF LSX II	KEF LS LUXE
Design	2-way	2-way
Built-in amplifier	200-watt RMS	380-watt RMS
Uni-Q driver	11th Generation Uni-Q	12th Generation Uni-Q
Tweeter	0.75" Hard-Dome	1" Hard-Dome
Woofer	4.5" Magnesium/Aluminium alloy	6.5"
Frequency response	54-28k Hz	42-28k Hz
Max depth / sample rate	24-bit / 384 kHz	—
Bluetooth	Built-in 4.2	—
App control	Yes	—
Weight	3.60kg / 7.9lbs	20.00kg / 44lbs
Dimensions (H x W x D)	9.5" x 6.1" x 7.1" 240 × 155 × 180 mm	13.25" x 8.8125" x 11.75" 336.0 x 223.0 x 298.0mm

LSX II and LS LUXE are members of KEF's LS series of speakers. Below you can find the loudspeakers from this series.

KEF LS Series History

Model	Body	Frequency	Watts RMS	Max Depth / Sample Rate	Woofer
KEF LSX II LT	Bookshelf	54-28k Hz	200-watt	24-bit/384 kHzΩ	1 x 4.5"
KEF LSX II	Bookshelf	54-28k Hz	200-watt	24-bit/384 kHzΩ	1 x 4.5"
KEF LS60 Wireless	Floor-standing	31-24k Hz	1400-watt	24-bit/384 kHzΩ	4 x 5.25"
KEF LS50 Wireless II	Bookshelf	45-28k Hz	380-watt	Yes/384 kHzΩ	1 x 5.25"
KEF LSX	Bookshelf	59-28k Hz	200-watt	24-bit/96 kHzΩ	1 x 4.5"
KEF LS50 Wireless	Bookshelf	79-28k Hz	230-watt	24-bit/192 kHzΩ	1 x 5.25"
KEF LS LUXE	Bookshelf	42-28k Hz	380-watt	/Ω	1 x 6.5"

The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.

**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.

Drivers

Both LSX II and LS LUXE are 2-way speakers.

KEF LSX II

KEF LS LUXE

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	KEF LS LUXE
Driver Setup	2-way	2-way
Tweeter	0.75-inch	1-inch
Midrange	-	-
Woofer	1 x 4.5-inch	1 x 6.5-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 LS LUXE features a 1" Hard-Dome Tweeter and 1 x 6.5" Woofer.

Frequency Response

LSX II has a frequency range of 54-28k Hz whereas LS LUXE has a frequency range of 42-28k Hz. With a minimum frequency of 42Hz, the LS LUXE 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

LSX II

LS LUXE

Min

Average

Median

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.

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 KEF LS LUXE's external dimensions. KEF LSX II has external dimensions of 240 × 155 × 180 mm (9.5 × 6.1 × 7.1 inch) whereas KEF LS LUXE has external dimensions of 336.0 x 223.0 x 298.0mm ().

KEF LS LUXE is clearly the larger of the two speakers. Its body is 68mm wider, 96mm taller and 118mm deeper than KEF LSX II.

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 KEF LS LUXE is approximately 664.5cm² / 103.0inch². The LSX II requires 58% less surface area than the LS LUXE which gives it a small advantage on placement in tight spaces.

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 KEF LSX II weighs 3.60kg / 7.9lbs and the KEF LS LUXE weighs 20.00kg / 44lbs. This makes the LS LUXE 456% heavier than the LSX II.

Here is a comparison of how LSX II and LS LUXE's weights compare with the average, max and min weights in Powered Bookshelf class.

Weight
All Bookshelf Speakers

KEF LSX II

KEF LS LUXE

Min

Average

Max

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

Reasons to choose KEF LSX II over KEF LS LUXE

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	240mm vs 336mm	Easier to fit in smaller spaces
Base Surface Area	279cm² vs 664cm²	Takes less floor space
Price per pair*	1299USD vs 4000USD	costs less (*prices may change depending on the seller, location and time)
Ethernet Connection	Yes vs No	High quality streaming over Ethernet
3.5mm Connection	Yes vs No	Connection via 3.5mm AUX input

Reasons to choose KEF LS LUXE over KEF LSX II

Uni-Q Driver	12th Generation vs 11th Generation	Newer generation Driver
Woofer Size	6.5 inches vs 4.5 inches	Larger woofer
Low Frequency Response	42 Hz vs 54 Hz	Generates deeper bass

KEF LSX II vs KEF LS LUXE Specs Table

Detailed comparison of specifications

General	KEF LSX II	KEF LS LUXE
Brand	KEF	KEF
Speaker Type	Powered Stereo Speakers	Powered Stereo Speakers
Frequency Response	54-28k Hz	42-28k Hz
Amplifier
Watts RMS (Continuous)	200-watt RMS	380-watt RMS
Max Bit Depth	24-bit	n/a
Max Sample Rate	384 kHz	n/a
Drivers
Woofer Quantity	1	1
Woofer Size	4.5"	6.5"
Woofer Composition	Magnesium/Aluminium alloy
Woofer Surround Material	Rubber	n/a
Tweeter Size	0.75"	1"
Tweeter Type	Hard-Dome	Hard-Dome
Aimable Tweeter	No	No
Midrange Driver	No	No
Firing Direction	rear	n/a
Physical Specs
Height	240.0mm (9.4")	336.0mm (13.2")
Width	155.0mm (6.1")	223.0mm (8.8")
Depth	180.0mm (7.1")	298.0mm (11.7")
Weight	3.60kg (7.9lbs)	20.00kg (44lbs)
Enclosure	Bass Reflex
Available Colors	Carbon Black, Mineral White, Cobalt Blue, Lava Red, and Soundwave	n/a
Mounting Bracket	No
Moisture Resistancy	No	No
Connections
Aux Inputs	3.5mm	n/a
USB Port	USB-C (connects to your computer)	n/a
Phone Input	No	n/a
Subwoofer Output	Wired	n/a
Digital Input	Optical	n/a
HDMI Input	ARC	n/a
Headphone Jack	No	n/a
Ethernet Port	Yes	n/a
Other
Parts Warranty	1 Year	3 Year w/ registration
Labor Warranty	1 Year	3 Year w/ registration

Verdict

Siblings in KEF's LS series, so they share a family sound. It comes down to size, output and price.

Area	Better	Why
Bass	B	KEF LS LUXE digs deeper - 42Hz against 54Hz.
Built-in power	B	KEF LS LUXE has the bigger amplifier (380W vs 200W RMS).
Connections	A	KEF LSX II adds Bluetooth, Wi-Fi, streaming, HDMI and digital inputs.
Size	depends	KEF LSX II is easier to place; KEF LS LUXE is bigger, which usually goes with fuller bass. Your room decides.
Expandability	A	KEF LSX II: a sub output.
Price	A	KEF LSX II is cheaper - $1,299 against $4,000, about 68% less; arguably a different class.

A KEF LSX II B KEF LS LUXE
depends neither is better in the abstract - it turns on your room, placement or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.

Which should you choose?

Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 54Hz anyway, which makes the cheaper KEF LSX II much easier to justify. In a large or open-plan room, KEF LS LUXE has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, KEF LSX II is the easier speaker to get right.

And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.