In this review, we will be comparing Aria Evo X No4 and R7, two Passive Floor-standing speakers from Focal and KEF. Let's have a brief look at the main features
of Focal Aria Evo X No4 and KEF R7 first before getting into our more
detailed comparison.
What size room are the Focal Aria Evo X No4 and KEF R7 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:
In the following sections, we will get into more detail in order to better understand how the Focal Aria Evo X No4 and KEF R7 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 Aria Evo X No4 and R7 are 3-way speakers.
| Driver |
Focal Aria Evo X No4 |
KEF R7 |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 6.5-inch |
1 x 5-inch |
|
Woofer
|
2 x 6.5-inch
|
2 x 6.5-inch
|
Aria Evo X No4 features a 1" Al/Mg inverted dome Tweeter , a 6.5" Midrange and 2 x 6.5" Flax Woofer with a Crossover frequency at 280 Hz - 2600 Hz. On the other hand, the R7 features a 1" aluminum Dome Tweeter , a 5" Midrange and 2 x 6.5" Hybrid Aluminum Woofer with a Crossover frequency at 400Hz and 2900Hz.
Frequency Response
Aria Evo X No4 has a frequency range of 37-30kHz whereas R7 has a frequency range of 48-28k Hz. With a minimum frequency of 37Hz, the Aria Evo X No4 can go significantly deeper on the low side and provide stronger bass compared to the R7's min frequency of 48Hz.
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
Aria Evo X No4 and R7 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Aria Evo X No4 sensitivity is rated at 92.5 dB and the R7's is at 88 dB. This 5 dB difference makes the Focal Aria Evo X No4 a more sensitive speaker compared to KEF R7, 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.
Aria Evo X No4 can handle a max power of 350 watts RMS from the amp the whereas R7 has a max power handling value of 250 watts RMS, 100 watts less than the Aria Evo X No4.
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
R7 features Binding post posts which make bi-amping or bi-wiring possible. Aria Evo X No4 has a Binding post which doesn't feature bi-amping/bi-wiring.
Focal Aria Evo X No4's Binding post terminals
KEF R7's Binding post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Aria Evo X No4 has a front firing port whereas R7 has a rear firing ports. Focal Aria Evo X No4's front-firing port gives more flexibility in placement in regards to proximity to walls compared to KEF R7 with its rear-firing 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 Focal Aria Evo X No4's and KEF R7's external dimensions. Focal Aria Evo X No4 has external dimensions of 115 x 37.1 x 42 cm ( 45-¼ x 14-⅝ x 16-½) whereas KEF R7 has external dimensions of 1113.0 x 200.0 x 389.0mm ( 43-13/16 x 8 x 15-5/16inch) .
Focal Aria Evo X No4 is clearly the larger of the two speakers. Its body is 171mm wider, 37mm taller and 31mm deeper than KEF R7.
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 Focal Aria Evo X No4 is approximately 1558.2cm2 / 241.5inch2 and base area of the KEF R7 is approximately 778.0cm2 / 120.6inch2. The Aria Evo X No4 requires 100% more surface area than the R7 which gives it a small disadvantage 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 Focal Aria Evo X No4 weighs 35.00kg / 77lbs and the KEF R7 weighs 31.40kg / 69.1lbs. This makes the Aria Evo X No4 11% heavier than the R7.
Here is a comparison of how Aria Evo X No4 and R7's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of KEF R7?
Here are the items that come with the R7:
Floorstanding loudspeakerGrille2 Foam port plugs4 Outrigger feet4 Spikes4 Protective discs4 Screws4 WashersWrenchHex-keyUser ManualWarranty Information
 Max Input Power |
350 watts
vs
250 watts
|
Handle more power from your amplifier |
 Sensitivity |
93 dB
vs
88 dB
|
Play louder with same amount of amplification power |
 Low Frequency Response |
37 Hz
vs
48 Hz
|
Generates deeper bass |
 High Frequency Response |
30k Hz
vs
28k Hz
|
Generates higher frequency |
 Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
 Minimum Impedance |
3.2 ohms
vs
2.5 ohms
|
Very low impedance levels puts more pressure on amplifier |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Height |
1113mm
vs
1150mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
778cm2 (200x389mm)
vs
1558cm2 (371x420mm)
|
Takes less floor space |
 Price per pair* |
4500USD
vs
5998USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Focal Aria Evo X No4 |
KEF R7 |
| Brand |
Focal |
KEF |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
40-350 watts |
15-250 watts |
| Sensitivity |
92.5 dB |
88 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
2.5 ohms |
3.2 ohms |
| Frequency Response |
37-30kHz |
48-28k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Flax |
Hybrid Aluminum |
| Woofer Surround Material |
TMD |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
inverted dome |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
6.5" |
5" |
| Crossover Frequency |
280 Hz - 2600 Hz |
400Hz and 2900Hz |
| Firing Direction |
front |
rear |
Physical Specs |
|
|
| Height |
1150.0mm (45.3") |
1113.0mm (43.8") |
| Width |
371.0mm (14.6") |
200.0mm (7.9") |
| Depth |
420.0mm (16.5") |
389.0mm (15.3") |
| Weight |
35.00kg (77lbs) |
31.40kg (69.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
n/a |
MDF/Lacquer |
| Available Colors |
Black High Gloss, Prime Walnut, Moss Green High Gloss |
Black Gloss, White Gloss, Walnut |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |