In this review, we will be comparing Ai61 and LS50 Wireless II, two Powered Bookshelf speakers from Fluance 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 Fluance Ai61 and KEF LS50 Wireless II 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 Fluance Ai61 and KEF LS50 Wireless 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 Ai61 and LS50 Wireless II are 2-way speakers.
Driver |
Fluance Ai61 |
KEF LS50 Wireless II |
Driver Setup
|
2-way
|
2-way
|
Tweeter
|
1-inch
|
1-inch
|
Midrange
|
- |
- |
Woofer
|
1 x 6.5-inch
|
1 x 5.25-inch
|
Ai61 features a 1" Silk Neodymium Ferrofluid Cooled Soft Dome Tweeter and 1 x 6.5" Woven, Glass Fiber Composite Woofer . On the other hand, the LS50 Wireless II features a 1" Aluminum Hard-Dome Tweeter and 1 x 5.25" Aluminum Woofer .
Frequency Response
Ai61 has a frequency range of 32-20k Hz whereas LS50 Wireless II has a frequency range of 45-28k Hz. With a minimum frequency of 32Hz, the Ai61 can go significantly deeper on the low side and provide stronger bass compared to the LS50 Wireless II's min frequency of 45Hz.
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 Ai61 and LS50 Wireless II 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 Fluance Ai61's and KEF LS50 Wireless II's external dimensions. Fluance Ai61 has external dimensions of 33.3 x 19.8 x 23.4 cm ( 13.1 x 7.8 x 9.2 inches) whereas KEF LS50 Wireless II has external dimensions of 277.8 x 200.0 x 322.3mm ( 10.9375 x 7.875 x 12.6875inch) .
Fluance Ai61 is 2mm narrower and 88.3mm less deeper than KEF LS50 Wireless II but it is also 55.2mm 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 Fluance Ai61 is approximately 463.0cm2 / 71.8inch2 and base area of the KEF LS50 Wireless II is approximately 644.6cm2 / 99.9inch2. The Ai61 requires 28% less surface area than the LS50 Wireless II 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 Fluance Ai61 weighs 5.96kg / 13.1lbs and the KEF LS50 Wireless II weighs 10.00kg / 22lbs. This makes the LS50 Wireless II 68% heavier than the Ai61.
Here is a comparison of how Ai61 and LS50 Wireless 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 Fluance Ai61?
Here are the items that are included inside the box of Ai61:
Ai61 Powered Bookshelf Speakers (pair)Remote Control1x CR2032 Battery6ft Power Cable8ft 18 Gauge Speaker WireQuick Start GuideFluance CatalogLifetime Customer Support2 Year Manufacturer’s Warranty
What's in the Box of KEF LS50 Wireless II?
Here are the items that come with the LS50 Wireless 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
Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
Low Frequency Response |
32 Hz
vs
45 Hz
|
Generates deeper bass |
Base Surface Area |
463cm2 (198x234mm)
vs
644cm2 (200x322mm)
|
Takes less floor space |
Price per pair* |
299USD
vs
2499USD
|
costs less (*prices may change depending on the seller, location and time) |
RCA Connection |
Yes
vs
No
|
Connection via RCA input |
High Frequency Response |
28k Hz
vs
20k Hz
|
Generates higher frequency |
App-Based Control |
Apple iOS, Android
vs
None
|
Control the speaker via an app |
Height |
277mm
vs
333mm
|
Easier to fit in smaller spaces |
Ethernet Connection |
Yes
vs
No
|
High quality streaming over Ethernet |
USB Port |
Service only
vs
No
|
USB port adds flexibility |
3.5mm Connection |
Yes
vs
No
|
Connection via 3.5mm AUX input |
HDMI Input |
eARC
vs
No
|
Connect HDMI sources directly |
General |
Fluance Ai61 |
KEF LS50 Wireless II |
Brand |
Fluance |
KEF |
Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
Frequency Response |
32-20k Hz |
45-28k Hz |
Amplifier |
|
|
Watts RMS (Continuous) |
120-watt RMS |
380-watt RMS |
Watts Peak (Max) |
n/a |
760-watt RMS |
Max Bit Depth |
16-bit |
32-bit |
Max Sample Rate |
48 kHz |
384 kHz |
Drivers |
|
|
Woofer Quantity |
1 |
1 |
Woofer Size |
6.5" |
5.25" |
Woofer Composition |
Woven, Glass Fiber Composite |
Aluminum |
Woofer Surround Material |
Butyl Rubber |
Rubber |
Tweeter Size |
1" |
1" |
Tweeter Type |
Soft Dome |
Hard-Dome |
Aimable Tweeter |
No |
No |
Midrange Driver |
No |
No |
Firing Direction |
rear |
rear |
Physical Specs |
|
|
Height |
333.0mm (13.1") |
277.8mm (10.9") |
Width |
198.0mm (7.8") |
200.0mm (7.9") |
Depth |
234.0mm (9.2") |
322.3mm (12.7") |
Weight |
5.96kg (13.1lbs) |
10.00kg (22lbs) |
Enclosure |
Bass Reflex |
Bass Reflex |
Finish |
MDF wood |
n/a |
Available Colors |
Black Ash,Lucky Bamboo,White Walnut, Natural Walnut |
n/a |
Mounting Bracket |
No |
No |
Moisture Resistancy |
No |
No |
Connections |
|
|
Aux Inputs |
RCA |
3.5mm |
USB Port |
USB-C |
Service only |
Phone Input |
No |
No |
Subwoofer Output |
Wired |
Wired |
Digital Input |
Optical |
Optical, Coax |
HDMI Input |
No |
eARC |
Headphone Jack |
No |
No |
Ethernet Port |
No |
Yes |
Other |
|
|
Parts Warranty |
|
1 Year |
Labor Warranty |
|
1 Year |