In this review, we will be comparing LSX II LT and The Sevens, two Powered Bookshelf speakers from KEF and Klipsch. 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 LT and Klipsch The Sevens 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 KEF LSX II LT and Klipsch The Sevens compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking
through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both LSX II LT and The Sevens are 2-way speakers.
| Driver |
KEF LSX II LT |
Klipsch The Sevens |
|
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 LT features a 0.75" Aluminum Hard-Dome Tweeter and 1 x 4.5" Magnesium/Aluminium alloy Woofer . On the other hand, the The Sevens features a 1" Titanium Tractrix Horn Tweeter and 1 x 6.5" Fiber-composite Woofer .
Frequency Response
LSX II LT has a frequency range of 54-28k Hz whereas The Sevens has a frequency range of 39-25k Hz. With a minimum frequency of 39Hz, the The Sevens can go significantly deeper on the low side and provide stronger bass compared to the LSX II LT'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.
Cabinet Type and Port Position
Both LSX II LT and The Sevens 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 LSX II LT's and Klipsch The Sevens's external dimensions. KEF LSX II LT has external dimensions of 240 × 155 × 180 mm ( 9.5 × 6.1 × 7.1 inch) whereas Klipsch The Sevens has external dimensions of 416.0 x 207.0 x 335.0mm ( 16.375inch x 8.125inch x 13.1875inch ) .
Klipsch The Sevens is clearly the larger of the two speakers. Its body is 52mm wider, 176mm taller and 155mm deeper than KEF LSX II LT.
Below you can see the front view size comparison of KEF LSX II LT and Klipsch The Sevens in scale.
Comparison image of KEF LSX II LT and Klipsch The Sevens 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 LSX II LT is approximately 279.0cm2 / 43.2inch2 and base area of the Klipsch The Sevens is approximately 693.5cm2 / 107.5inch2. The LSX II LT requires 60% less surface area than the The Sevens 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 KEF LSX II LT and Klipsch The Sevens 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 KEF LSX II LT weighs 3.60kg / 7.9lbs and the Klipsch The Sevens weighs 9.03kg / 19.9lbs. This makes the The Sevens 151% heavier than the LSX II LT.
Here is a comparison of how LSX II LT and The Sevens'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 LT?
Here are the items that are included inside the box of LSX II LT:
2 Wireless powered speakers6.5-feet AC power cords3m - 10ft Interspeaker cableRemote control2 AAA batteries Quick Start Guide Important Safety Information Warranty Information Maintenance Guide
What's in the Box of Klipsch The Sevens?
Here are the items that come with the The Sevens:
Powered speaker (Primary) Passive speaker (Secondary) 2 Grilles (pre-installed) 6.5-feet AC power cord 13-feet Proprietary speaker cable 6.5-feet Proprietary extension cable 58-inch HDMI cable 5-feet USB-B to USB-A cable Remote control 2 AAA batteries Instruction Booklet Need Help? Card
 High Frequency Response |
28k Hz
vs
25k Hz
|
Generates higher frequency |
 Height |
240mm
vs
416mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
279cm2 (155x180mm)
vs
693cm2 (207x335mm)
|
Takes less floor space |
 Price per pair* |
999USD
vs
1299USD
|
costs less (*prices may change depending on the seller, location and time) |
 Ethernet Connection |
Yes
vs
No
|
High quality streaming over Ethernet |
 USB Port |
USB-C (connects to your computer)
vs
No
|
USB port adds flexibility |
 Woofer Size |
6.5 inches
vs
4.5 inches
|
Larger woofer |
| Low Frequency Response |
39 Hz
vs
54 Hz
|
Generates deeper bass |
 3.5mm Connection |
Yes
vs
No
|
Connection via 3.5mm AUX input |
 Phono Input |
Yes
vs
No
|
Connect your turntable directly |
| General |
KEF LSX II LT |
Klipsch The Sevens |
| Brand |
KEF |
Klipsch |
| Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
| Frequency Response |
54-28k Hz |
39-25k Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
200-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
n/a |
400-watt RMS |
| Max Bit Depth |
24-bit |
24-bit |
| Max Sample Rate |
384 kHz |
192 kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
4.5" |
6.5" |
| Woofer Composition |
Magnesium/Aluminium alloy |
Fiber-composite |
| Woofer Surround Material |
Rubber |
n/a |
| Tweeter Size |
0.75" |
1" |
| Tweeter Type |
Hard-Dome |
Tractrix Horn |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
240.0mm (9.4") |
416.0mm (16.4") |
| Width |
155.0mm (6.1") |
207.0mm (8.1") |
| Depth |
180.0mm (7.1") |
335.0mm (13.2") |
| Weight |
3.60kg (7.9lbs) |
9.03kg (19.9lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
n/a |
MDF with genuine wood veneer |
| Available Colors |
Sage Green, Graphite Grey, Stone White |
Black,Walnut |
| Mounting Bracket |
No |
No |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Aux Inputs |
n/a |
3.5mm |
| USB Port |
USB-C (connects to your computer) |
USB-B |
| Phone Input |
No |
Yes |
| Subwoofer Output |
Wired |
mono-RCA |
| Digital Input |
Optical |
Optical, HDMI |
| HDMI Input |
ARC |
ARC |
| Headphone Jack |
No |
No |
| Ethernet Port |
Yes |
No |
Other |
|
|
| Parts Warranty |
1 Year |
1 Year |
| Labor Warranty |
1 Year |
1 Year |