In this review, we will be comparing R2 Meta and Airmotiv C3+, two Passive Center Channel speakers from KEF and Emotiva.
Let's have a brief look at the main features
of KEF R2 Meta and Emotiva Airmotiv C3+ first before getting into our more
detailed comparison.
KEF R2 Meta Key Specs
- 3-way Design
- 12th Generation Uni-Q Driver
- 1" Hard-Dome Tweeter
- 5" Midrange
- 2 x 5.25" Hybrid Aluminum Woofer
- 67-28k Hz Frequency Response
- 87 dB Sensitivity
- Impedance: 4ohms
- Power Range:15-200watts
- Weight:15.45kg
- Dimensions (H x W x D): 177.0" x 21-3/4" x 12-1/4"( 177.0 x 553.0 x 312.0mm )
Emotiva Airmotiv C3+ Key Specs
- 3-way Design
- 25×32 mm" folded ribbon Tweeter
- 5.25" Midrange
- 4 x 6.5" woven fiber cone Woofer
- 5.25" Midrange
- 40 Hz – 28 kHz Frequency Response
- 92 dB Sensitivity
- Impedance: 4ohms
- Power Range:Up to 200watts
- Weight:26.80kg
- Dimensions (H x W x D): 220.0" x 54-3/4" x 12-1/4"( 220.0 x 1391.0 x 312.0mm )
What size room are the KEF R2 Meta and Emotiva Airmotiv C3+ 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 R2 Meta |
Emotiva Airmotiv C3+ |
| Near-field |
Poor |
Poor |
| Small Room |
Poor |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Good |
Average |
| Very Large Room |
Average |
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.)
In the following sections, we will get into more detail in order to better understand how the KEF R2 Meta and Emotiva Airmotiv C3+ 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 R2 Meta and Airmotiv C3+ are 3-way speakers.
| Driver |
KEF R2 Meta |
Emotiva Airmotiv C3+ |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
25×32 mm-inch
|
|
Midrange
|
1 x 5-inch |
2 x 5.25-inch |
|
Woofer
|
2 x 5.25-inch
|
4 x 6.5-inch
|
R2 Meta features a 1" Aluminum with MAT absorber Hard-Dome Tweeter , a 5" Midrange and 2 x 5.25" Hybrid Aluminum Woofer with a Crossover frequency at 560Hz and 2500Hz. On the other hand, the Airmotiv C3+ features a 25×32 mm" folded ribbon Tweeter , a 5.25" Midrange and 4 x 6.5" woven fiber cone Woofer with a Crossover frequency at 350 Hz and 2800Hz.
Frequency Response
R2 Meta has a frequency range of 67-28k Hz whereas Airmotiv C3+ has a frequency range of 40 Hz – 28 kHz. With a minimum frequency of 40Hz, the Airmotiv C3+ can go significantly deeper on the low side and provide stronger bass compared to the R2 Meta's min frequency of 67Hz.
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 Center Channel class in our database.
Low Frequency
Center Channel Speakers
High Frequency
Center Channel 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
R2 Meta and Airmotiv C3+ have the same Impedance of 4 ohms but where they differ is the sensitivity levels. R2 Meta sensitivity is rated at 87 dB and the Airmotiv C3+'s is at 92 dB. This 5 dB difference makes the Emotiva Airmotiv C3+ a more sensitive speaker compared to KEF R2 Meta, hence will play louder with the same amount of watts.
One thing to keep in mind that the lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit comared to higher impedance speakers especially at high volume levels, so make sure the amp you pair with the R2 Meta and the R2 Meta can provide this impedance level.
Sensitivity
Center Channel 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.
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
Both R2 Meta and Airmotiv C3+ features dual binding post speaker terminals for bi-amping or bi-wiring.
KEF R2 Meta's Custom 5-way bi-wire tool-less binding posts terminals allows Bi-amping or bi-wiring
Emotiva Airmotiv C3+'s Binding post terminals allows Bi-amping or bi-wiring
Emotiva Airmotiv C3+ double 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 R2 Meta's and Emotiva Airmotiv C3+'s external dimensions. KEF R2 Meta has external dimensions of 177.0 x 553.0 x 312.0mm ( 6-15/16-inch x 21-3/4-inch x 12-1/4-inch) whereas Emotiva Airmotiv C3+ has external dimensions of 220.0 x 1391.0 x 312.0mm ( 8-5/8-inch x 54-3/4-inch x 12-1/4-inch) .
Below you can see the front view size comparison of KEF R2 Meta and Emotiva Airmotiv C3+ in scale.
Comparison image of KEF R2 Meta and Emotiva Airmotiv C3+ 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 R2 Meta is approximately 1725.4cm2 / 267.4inch2 and base area of the Emotiva Airmotiv C3+ is approximately 4339.9cm2 / 672.7inch2. The R2 Meta requires 60% less surface area than the Airmotiv C3+ 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 KEF R2 Meta weighs 15.45kg / 34lbs and the Emotiva Airmotiv C3+ weighs 26.80kg / 59lbs. This makes the Airmotiv C3+ 73% heavier than the R2 Meta.
Here is a comparison of how R2 Meta and Airmotiv C3+'s weights compare with the average, max and min weights in Passive Center Channel class.
Weight
All Center Channel Speakers
What's in the Box of KEF R2 Meta?
Here are the items that are included inside the box of R2 Meta:
1 R2 Meta 1 microfiber grille Rubber feet User manual and warranty information
 Base Surface Area |
1725cm2
vs
4339cm2
|
Takes less floor space |
 Sensitivity |
92 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
|
Number of Woofers |
4
vs
2
|
More woofers |
|
Low Frequency Response |
40 Hz
vs
67 Hz
|
Generates deeper bass |
 Price per pair* |
899USD
vs
1399USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
KEF R2 Meta |
Emotiva Airmotiv C3+ |
| Brand |
KEF |
Emotiva |
| Speaker Type |
Center channel speaker |
Center channel speaker |
| Power Range |
15-200 watts |
Up to 200 watts |
| Sensitivity |
87 dB |
92 dB |
| Impedance |
4 ohms |
4 ohms |
| Impedance |
3.2 ohms |
n/a |
| Frequency Response |
67-28k Hz |
40 Hz – 28 kHz |
Drivers |
|
|
| Woofer Quantity |
2 |
4 |
| Woofer Size |
5.25" |
6.5" |
| Woofer Composition |
Hybrid Aluminum |
woven fiber cone |
| Woofer Surround Material |
Rubber |
n/a |
| Tweeter Size |
1" |
25×32 mm" |
| Tweeter Type |
Hard-Dome |
folded ribbon |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
5" |
5.25" |
| Crossover Frequency |
560Hz and 2500Hz |
350 Hz and 2800Hz |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
220.0mm (8.7") |
220.0mm (8.7") |
| Width |
553.0mm (21.8") |
1391.0mm (54.8") |
| Depth |
312.0mm (12.3") |
312.0mm (12.3") |
| Weight |
15.45kg (34lbs) |
26.80kg (59lbs) |
| Enclosure |
Sealed |
Bass reflex |
| Finish |
n/a |
HDF |
| Available Colors |
Black Gloss, White Gloss, Walnut |
Black |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
5 years |
5 Years |
| Labor Warranty |
5 years |
5 Years |