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  1. Home
  2. Focal Speakers
  3. Focal Aria Evo X No4 vs Focal Aria Evo X C

Focal Aria Evo X No4 vs Focal Aria Evo X C Comparison

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Focal Aria Evo X No4

Passive Floor-standing | 37-30kHz

Focal Aria Evo X No4
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Focal Aria Evo X C

Passive Center Channel | 57-30kHz

Focal Aria Evo X Center
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Focal Aria Evo X No4 Focal Aria Evo X No4
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Focal Aria Evo X C Focal Aria Evo X C
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Focal Aria Evo X No4
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Focal Aria Evo X C
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Focal Aria Evo X No4 vs Focal Aria Evo X C Speaker Comparison

In this review, we will be comparing two different types of speakers by Focal. Focal Aria Evo X No4 is a Floor-standing speaker whereas the Aria Evo X Center is a Center Channel speaker.

Let's have a brief look at the main features of Focal Aria Evo X No4 and Focal Aria Evo X C first before getting into our more detailed comparison.

Key SpecsFocal Aria Evo X No4Focal Aria Evo X C
BrandFocal
France · founded 1979
Focal
France · founded 1979
Design3-way2-way
Tweeter1" inverted dome1" inverted dome
Midrange6.5"—
Woofer2 x 6.5" Flax2 x 6.5" Flax
Frequency response37-30kHz57-30kHz
Sensitivity92.5 dB91 dB
Impedance8 ohms8 ohms
Power range40-350 watts40-120 watts
Weight35.00kg / 77lbs10.50kg / 23.1lbs
Dimensions (H x W x D)45-1/4" x 14-5/8" x 16.5"
115 x 37.1 x 42 cm
7-7/8" x 21" x 10"
20 x 53.3 x 24.5 cm

Aria Evo X No4 and Aria Evo X Center are members of Focal's Aria Evo X series of speakers. Below you can find the loudspeakers from this series.

Focal Aria Evo X Series History
Model Body Frequency SensitivityImpedance Woofer
Focal Aria Evo X No1
  
Bookshelf 55-30kHz 89.5 dB8Ω 1 x 6.5"
Focal Aria Evo X No2
  
Floor-standing 45-30kHz 91.5 dB8Ω 2 x 6.5"
Focal Aria Evo X No4
Floor-standing 37-30kHz 92.5 dB8Ω 2 x 6.5"
Focal Aria Evo X No3
  
Floor-standing 39-30kHz 92 dB8Ω 3 x 6.5"
Focal Aria Evo X C
Center Channel 57-30kHz 91 dB8Ω 2 x 6.5"

What size room are the Focal Aria Evo X No4 and Focal Aria Evo X C 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* Focal Aria Evo X No4 Focal Aria Evo X C
Near-field Are you nuts? Poor
Small Room Poor Average
Mid-size Room Average Good
Large Room Good Average
Very Large Room Good Poor

(* 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.)

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

One of the fundamental differences between these two speakers is that Aria Evo X No4 is a 3-way design whereas the Aria Evo X Center 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.

Tweeter - 1 inchMidrange - 6.5 inchWoofer - 6.5 inchWoofer - 6.5 inch
Focal Aria Evo X No4
Woofer - 6.5 inchTweeter - 1 inchWoofer - 6.5 inch
Focal Aria Evo X C

TweeterMidrangeWoofer

Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.

Driver Focal Aria Evo X No4 Focal Aria Evo X C
Driver Setup 3-way 2-way
Tweeter 1-inch 1-inch
Midrange 1 x 6.5-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 Aria Evo X Center features a 1" Al/Mg inverted dome Tweeter and 2 x 6.5" Flax Woofer with a Crossover frequency at 2800 Hz.

Focal Aria Evo X No4 driver frequency bandsFocal Aria Evo X No4Focal Aria Evo X C37-28057-2.8kWoofer280-2.6kMidrange2.6k-30k2.8k-30kTweeter20501002005001k2k5k10k20k40kHz, log scale

Frequency Response

Aria Evo X No4 has a frequency range of 37-30kHz whereas Aria Evo X Center has a frequency range of 57-30kHz. 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 Aria Evo X Center's min frequency of 57Hz.

The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Floor-standing class in our database.

Low Frequency

Floor-standing Speakers

Aria Evo X No4
Aria Evo X Center
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.

Impedance and Sensitivity

Aria Evo X No4 and Aria Evo X Center 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 Aria Evo X Center's is at 91 dB. This 2 dB difference makes the Focal Aria Evo X No4 a more sensitive speaker compared to Focal Aria Evo X C, hence will play louder with the same amount of watts.

Sensitivity

Floor-standing Speakers

Aria Evo X No4
Aria Evo X Center
Min
Average
Median

Power Range

Power range is the range of input power in watts RMS that a loudspeaker is designed to handle. Staying within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.

Aria Evo X No4 can handle a max power of 350 watts RMS, whereas Aria Evo X Center has a max power handling value of 120 watts RMS, 230 watts less than the Aria Evo X No4.

Note that higher power handling does not make a speaker louder: that depends mainly on sensitivity and impedance. The calculator below shows how loud each of these actually plays on a real amplifier.

Which plays louder on your amplifier?

Starting with a popular amplifier — change it to the one you own, or any you are considering, and watch both numbers move.

Focal Aria Evo X No4
 
Focal Aria Evo X C
 

Input Type and Bi-Amping / Bi-Wiring

Aria Evo X Center 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 Terminals
Focal Aria Evo X No4's Binding post terminals

Focal Aria Evo X CBinding post Terminals
Focal Aria Evo X C'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 Aria Evo X Center 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 Focal Aria Evo X C with its rear-firing 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 Focal Aria Evo X No4's and Focal Aria Evo X C'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 Focal Aria Evo X C has external dimensions of 20 x 53.3 x 24.5 cm (7-7/8 x 21 x 9-5/8).

Focal Aria Evo X C is 950mm shorter and 175mm less deeper than Focal Aria Evo X No4 but it is also 162mm wider.

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 Focal Aria Evo X C is approximately 1305.9cm2 / 202.4inch2. The Aria Evo X No4 requires 19% more surface area than the Aria Evo X Center which gives it a small disadvantage on placement in tight spaces.


Reasons to choose Focal Aria Evo X No4 over Focal Aria Evo X Center

Max Input Power 350 watts vs 120 watts Handle more power from your amplifier
Driver Setup 3-way vs 2-way Have a dedicated mid-range driver
Sensitivity 93 dB vs 91 dB Play louder with same amount of amplification power
Low Frequency Response 37 Hz vs 57 Hz Generates deeper bass
Port Position Front vs Rear Gives more flexibility placing close to walls

Reasons to choose Focal Aria Evo X Center over Focal Aria Evo X No4

Minimum Impedance 4.3 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 200mm vs 1150mm Easier to fit in smaller spaces
Base Surface Area 1305cm2 vs 1558cm2 Takes less floor space
Price per pair* 999USD vs 5998USD costs less (*prices may change depending on the seller, location and time)

Focal Aria Evo X No4 vs Focal Aria Evo X C Specs Table

Detailed comparison of specifications
General Focal Aria Evo X No4 Focal Aria Evo X Center
Brand Focal Focal
Speaker Type Floor-standing speaker Center channel speaker
Power Range 40-350 watts 40-120 watts
Sensitivity 92.5 dB 91 dB
Impedance 8 ohms 8 ohms
Impedance 2.5 ohms 4.3 ohms
Frequency Response 37-30kHz 57-30kHz
Drivers
Woofer Quantity 2 2
Woofer Size 6.5" 6.5"
Woofer Composition Flax Flax
Woofer Surround Material TMD TMD
Tweeter Size 1" 1"
Tweeter Type inverted dome inverted dome
Aimable Tweeter No No
Midrange Driver 6.5" No
Crossover Frequency 280 Hz - 2600 Hz 2800 Hz
Firing Direction front rear
Physical Specs
Height 1150.0mm (45.3") 200.0mm (7.9")
Width 371.0mm (14.6") 533.0mm (21")
Depth 420.0mm (16.5") 245.0mm (9.6")
Weight 35.00kg (77lbs) 10.50kg (23.1lbs)
Enclosure Bass Reflex Bass Reflex
Available Colors Black High Gloss, Prime Walnut, Moss Green High Gloss Black High Gloss, Prime Walnut, Moss Green High Gloss
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

Verdict

Siblings in Focal's Aria Evo X series, so they share a family sound. It comes down to size, output and price.

AreaBetterWhy
BassAFocal Aria Evo X No4 digs deeper - 37Hz against 57Hz.
Amplifier needsAFocal Aria Evo X No4 is more sensitive (93dB vs 91dB), so it goes louder on the same amplifier.
HeadroomAFocal Aria Evo X No4 takes more power (350W vs 120W) - more in hand in a big room.
SizedependsFocal Aria Evo X C is easier to place; Focal Aria Evo X No4 is bigger, which usually goes with fuller bass. Your room decides.
TypedependsA Passive Floor-standing against a Passive Center Channel - a different job rather than a better one.
ExpandabilityBFocal Aria Evo X C: bi-amping.
PriceBFocal Aria Evo X C is cheaper - $999 against $5,998, about 83% less; arguably a different class.

A Focal Aria Evo X No4  B Focal Aria Evo X C
depends neither is better in the abstract - it turns on your room, your system 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?

The usual trade-off: Focal Aria Evo X No4 measures better, Focal Aria Evo X C costs about about 6x the price% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 57Hz anyway, which makes the cheaper Focal Aria Evo X C much easier to justify. Match it to your room: we rate Focal Aria Evo X No4 the better fit for a large room and a very large room, and Focal Aria Evo X C for a small room and a mid-size room.

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.


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