In this review, we will be comparing Motion C10 and Airmotiv C2+, two Passive Center Channel speakers from MartinLogan and Emotiva. Let's have a brief look at the main features
of MartinLogan Motion C10 and Emotiva Airmotiv C2+ first before getting into our more
detailed comparison.
What size room are the MartinLogan Motion C10 and Emotiva Airmotiv C2+ 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 MartinLogan Motion C10 and Emotiva Airmotiv C2+ 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 Motion C10 is a 2-way design whereas the Airmotiv C2+ is a 3-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 |
MartinLogan Motion C10 |
Emotiva Airmotiv C2+ |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1.0 x 1.4-inch
|
25×32 mm-inch
|
|
Midrange
|
- |
2 x 3-inch |
|
Woofer
|
2 x 5.5-inch
|
2 x 6.5-inch
|
Motion C10 features a 1.0 x 1.4" Folded Motion Ribbon Tweeter and 2 x 5.5" Woven Fiberglass Woofer with a Crossover frequency at 1000Hz and 2000Hz. On the other hand, the Airmotiv C2+ features a 25×32 mm" folded ribbon Tweeter , a 3" Midrange and 2 x 6.5" woven fiber cone Woofer with a Crossover frequency at 350 Hz and 3200Hz.
Frequency Response
Motion C10 has a frequency range of 63-25k Hz whereas Airmotiv C2+ has a frequency range of 45 Hz – 28 kHz. With a minimum frequency of 45Hz, the Airmotiv C2+ can go significantly deeper on the low side and provide stronger bass compared to the Motion C10's min frequency of 63Hz.
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
Motion C10 and Airmotiv C2+ have the same Impedance of 4 ohms but where they differ is the sensitivity levels. Motion C10 sensitivity is rated at 93 dB and the Airmotiv C2+'s is at 92 dB. This 1 dB difference makes the MartinLogan Motion C10 a more sensitive speaker compared to Emotiva Airmotiv C2+, 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 Motion C10 and the Motion C10 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.
Motion C10 can handle a max power of 200 watts RMS from the amp the whereas Airmotiv C2+ has a max power handling value of 150 watts RMS, 50 watts less than the Motion C10.
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
Airmotiv C2+ features Binding post posts which make bi-amping or bi-wiring possible. Motion C10 has a Custom 5-way binding posts which doesn't feature bi-amping/bi-wiring.
MartinLogan Motion C10's Custom 5-way binding posts terminals
Emotiva Airmotiv C2+'s Binding post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Both Motion C10 and Airmotiv C2+ 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.
Emotiva Airmotiv C2+ 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 MartinLogan Motion C10's and Emotiva Airmotiv C2+'s external dimensions. MartinLogan Motion C10 has external dimensions of 184 x 483 x 293mm ( 7-1/4inch x 19inch x 11-1/2inch ) whereas Emotiva Airmotiv C2+ has external dimensions of 220.0 x 812.0 x 267.0mm ( 8-5/8 x 31-15/16 x 10-1/2inch) .
MartinLogan Motion C10 is 329mm narrower and 36mm shorter than Emotiva Airmotiv C2+ but it is also 26mm deeper.
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 MartinLogan Motion C10 is approximately 1415.2cm2 / 219.4inch2 and base area of the Emotiva Airmotiv C2+ is approximately 2168.0cm2 / 336.0inch2. The Motion C10 requires 35% less surface area than the Airmotiv C2+ 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 MartinLogan Motion C10 weighs 10.70kg / 23.5lbs and the Emotiva Airmotiv C2+ weighs 16.40kg / 36.1lbs. This makes the Airmotiv C2+ 53% heavier than the Motion C10.
Here is a comparison of how Motion C10 and Airmotiv C2+'s weights compare with the average, max and min weights in Passive Center Channel class.
Weight
All Center Channel Speakers
 Max Input Power |
200 watts
vs
150 watts
|
Handle more power from your amplifier |
 Sensitivity |
93 dB
vs
92 dB
|
Play louder with same amount of amplification power |
 Height |
184mm
vs
220mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1415cm2 (483x293mm)
vs
2168cm2 (812x267mm)
|
Takes less floor space |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Woofer Size |
6.5 inches
vs
5.5 inches
|
Larger woofer |
| Low Frequency Response |
45 Hz
vs
63 Hz
|
Generates deeper bass |
 High Frequency Response |
28k Hz
vs
25k Hz
|
Generates higher frequency |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Price per pair* |
499USD
vs
1998USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
MartinLogan Motion® C10 |
Emotiva Airmotiv C2+ |
| Brand |
MartinLogan |
Emotiva |
| Speaker Type |
Center channel speaker |
Center channel speaker |
| Power Range |
20-200 watts |
Up to 150 watts |
| Sensitivity |
93 dB |
92 dB |
| Impedance |
4 ohms |
4 ohms |
| Frequency Response |
63-25k Hz |
45 Hz – 28 kHz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
5.5" |
6.5" |
| Woofer Composition |
Woven Fiberglass |
woven fiber cone |
| Woofer Surround Material |
Rubber |
n/a |
| Tweeter Size |
1.0 x 1.4" |
25×32 mm" |
| Tweeter Type |
Folded Motion Ribbon |
folded ribbon |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
3" |
| Crossover Frequency |
1000Hz and 2000Hz |
350 Hz and 3200Hz |
| Firing Direction |
rear |
rear |
| Suggested Break-in Period |
Allow 72 hours of break-in |
n/a |
Physical Specs |
|
|
| Height |
184.0mm (7.2") |
220.0mm (8.7") |
| Width |
483.0mm (19") |
812.0mm (32") |
| Depth |
293.0mm (11.5") |
267.0mm (10.5") |
| Weight |
10.70kg (23.5lbs) |
16.40kg (36.1lbs) |
| Enclosure |
Bass Reflex |
Bass reflex |
| Finish |
n/a |
HDF |
| Available Colors |
Gloss Black, Walnut, and Satin White |
Black |
| 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 |