In this review, we will be comparing two different type of speakers by KEF. KEF R5 is a Floor-standing speaker whereas the LS50 Meta is a Bookshelf speaker.
Let's have a brief look at the main features
of KEF R5 and KEF LS50 Meta first before getting into our more
detailed comparison.
KEF R5 Key Specs
- 3-way Design
- 1" Dome Tweeter
- 5" Midrange
- 2 x 5.25" Hybrid Aluminum Woofer
- 58-28k Hz Frequency Response
- 87 dB Sensitivity
- Impedance: 8ohms
- Power Range:15-200watts
- Weight:27.30kg
- Dimensions (H x W x D): 1077.0" x 10-3/4" x 13-13/16"( 1077.0 x 274.0 x 351.0mm )
KEF LS50 Meta Key Specs
- 2-way Design
- 12th Generation Uni-Q Driver
- 1" Hard-Dome Tweeter
- 5.25" Aluminum Woofer
- 79-28k Hz Frequency Response
- 85 dB Sensitivity
- Impedance: 8ohms
- Power Range:40-100watts
- Weight:7.82kg
- Dimensions (H x W x D): 303.0" x 7.875" x 11-1/16"( 303.0 x 201.0 x 281.0mm )
What size room are the KEF R5 and KEF LS50 Meta speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
| Listening Environment* |
KEF R5 |
KEF LS50 Meta |
| Near-field |
Bad |
Average |
| Small Room |
Poor |
Good |
| Mid-size Room |
Good |
Average |
| Large Room |
Good |
Poor |
| Very Large Room |
Poor |
Bad |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
In the following sections, we will get into more detail in order to better understand how the KEF R5 and KEF LS50 Meta 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
One of the fundamental differences between these two speakers is that R5 is a 3-way design whereas the LS50 Meta is a 2-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
| Driver |
KEF R5 |
KEF LS50 Meta |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 5-inch |
- |
|
Woofer
|
2 x 5.25-inch
|
1 x 5.25-inch
|
R5 features a 1" aluminum Dome Tweeter , a 5" Midrange and 2 x 5.25" Hybrid Aluminum Woofer with a Crossover frequency at 400Hz and 2900Hz. On the other hand, the LS50 Meta features a 1" Aluminum Hard-Dome Tweeter and 1 x 5.25" Aluminum Woofer with a Crossover frequency at 2100Hz.
Frequency Response
R5 has a frequency range of 58-28k Hz whereas LS50 Meta has a frequency range of 79-28k Hz. With a minimum frequency of 58Hz, the R5 can go significantly deeper on the low side and provide stronger bass compared to the LS50 Meta's min frequency of 79Hz.
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 Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing 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.
Impedance and Sensitivity
R5 and LS50 Meta have the same Impedance of 8 ohms but where they differ is the sensitivity levels. R5 sensitivity is rated at 87 dB and the LS50 Meta's is at 85 dB. This 2 dB difference makes the KEF R5 a more sensitive speaker compared to KEF LS50 Meta, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
R5 can handle a max power of 200 watts RMS from the amp the whereas LS50 Meta has a max power handling value of 100 watts RMS, 100 watts less than the R5.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
R5 features Binding post posts which make bi-amping or bi-wiring possible. LS50 Meta has a Post which doesn't feature bi-amping/bi-wiring.
KEF R5's Binding post terminals allows Bi-amping or bi-wiring
KEF LS50 Meta's Post terminals
Cabinet Type and Port Position
Both R5 and LS50 Meta 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.
KEF R5 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 KEF R5's and KEF LS50 Meta's external dimensions. KEF R5 has external dimensions of 1077.0 x 274.0 x 351.0mm ( 42-3/8 x 10-3/4 x 13-13/16inch) whereas KEF LS50 Meta has external dimensions of 303.0 x 201.0 x 281.0mm ( 11-15/16 x 7.875 x 11-1/16inch) .
KEF R5 is clearly the larger of the two speakers. Its body is 73mm wider, 774mm taller and 70mm deeper than KEF LS50 Meta.
Below you can see the front view size comparison of KEF R5 and KEF LS50 Meta in scale.
Comparison image of KEF R5 and KEF LS50 Meta 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 R5 is approximately 961.7cm2 / 149.1inch2 and base area of the KEF LS50 Meta is approximately 564.8cm2 / 87.5inch2. The R5 requires 70% more surface area than the LS50 Meta which gives it a small disadvantage on placement in tight spaces.
What's in the Box of KEF R5?
Here are the items that are included inside the box of R5:
Floorstanding loudspeakerGrille2 Foam port plugs4 Outrigger feet4 Spikes4 Protective discs4 Screws4 WashersWrenchHex-keyUser ManualWarranty Information
What's in the Box of KEF LS50 Meta?
Here are the items that come with the LS50 Meta:
2 Bookshelf loudspeakers2 Foam port plugs8 Self-adhesive rubber feetOwners ManualWarranty Registration Card
Max Input Power 
Driver Setup 
Sensitivity 
Number of Woofers 
Bi-Amping and Bi-Wiring 
Minimum Impedance 
Height 
Base Surface Area 
Price per pair*