In this review, we will be comparing Motion 50XTi and ElectroMotion ESL C, two Passive Center Channel speakers by MartinLogan Let's have a brief look at the main features
of MartinLogan 50XTi and MartinLogan ESL C first before getting into our more
detailed comparison.
What size room are the MartinLogan 50XTi and MartinLogan ESL 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:
In the following sections, we will get into more detail in order to better understand how the MartinLogan 50XTi and MartinLogan ESL C 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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through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both Motion 50XTi and ElectroMotion ESL C are 3-way speakers.
| Driver |
MartinLogan 50XTi |
MartinLogan ESL C |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1.25 x 2.4-inch
|
1 x 1-7/16-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 6.5-inch
|
2 x 5.25-inch
|
Motion 50XTi features a 1.25 x 2.4" Folded Motion XT Tweeter and 2 x 6.5" Aluminum Woofer with a Crossover frequency at 900Hz and 2200Hz. On the other hand, the ElectroMotion ESL C features a 1 x 1-7/16" Folded Motion Tweeter and 2 x 5.25" high-rigidity aluminum woofers Woofer .
Frequency Response
Motion 50XTi has a frequency range of 50-25k Hz whereas ElectroMotion ESL C has a frequency range of 66-23k Hz. With a minimum frequency of 50Hz, the Motion 50XTi can go significantly deeper on the low side and provide stronger bass compared to the ElectroMotion ESL C's min frequency of 66Hz.
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 50XTi and ElectroMotion ESL C have the same Impedance of 4 ohms but where they differ is the sensitivity levels. Motion 50XTi sensitivity is rated at 94 dB and the ElectroMotion ESL C's is at 89 dB. This 5 dB difference makes the MartinLogan 50XTi a more sensitive speaker compared to MartinLogan ESL C, 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 50XTi and the Motion 50XTi 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 50XTi and ElectroMotion ESL C has the same power range of 20-300 watts.
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
Motion 50XTi features Custom 5-way bi-wire tool-less binding posts posts which make bi-amping or bi-wiring possible. ElectroMotion ESL C has a Binding post which doesn't feature bi-amping/bi-wiring.
MartinLogan 50XTi's Custom 5-way bi-wire tool-less binding posts terminals allows Bi-amping or bi-wiring
MartinLogan ESL C's Binding post terminals
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 50XTi's and MartinLogan ESL C's external dimensions. MartinLogan 50XTi has external dimensions of 196.0 x 585.0 x 347.0mm ( 7-11/16 x 23 x 13-5/8inch) whereas MartinLogan ESL C has external dimensions of 194.0 x 582.0 x 410.0mm ( 7-5/8 x 22-7/8 x 16-1/8inch) .
MartinLogan ESL C is 3mm narrower and 2mm shorter than MartinLogan 50XTi but it is also 63mm 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 50XTi is approximately 2030.0cm2 / 314.7inch2 and base area of the MartinLogan ESL C is approximately 2386.2cm2 / 369.9inch2. The Motion 50XTi requires 15% less surface area than the ElectroMotion ESL C 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 50XTi weighs 13.86kg / 30.5lbs and the MartinLogan ESL C weighs 14.55kg / 32lbs. This makes the ElectroMotion ESL C 5% heavier than the Motion 50XTi.
Here is a comparison of how Motion 50XTi and ElectroMotion ESL C'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 MartinLogan 50XTi?
Here are the items that are included inside the box of Motion 50XTi:
Center-channel loudspeaker Grille 4 Rubber feet Users Manual Warranty/Registration Information
What's in the Box of MartinLogan ESL C?
Here are the items that come with the ElectroMotion ESL C:
Center-channel loudspeakerGrilleAC power supply (attached 10-feet DC cord)User-feets Manual (En/Fr)Product Registration Card
 Sensitivity |
94 dB
vs
89 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
| Low Frequency Response |
50 Hz
vs
66 Hz
|
Generates deeper bass |
 High Frequency Response |
25k Hz
vs
23k Hz
|
Generates higher frequency |
 Base Surface Area |
2030cm2 (585x347mm)
vs
2386cm2 (582x410mm)
|
Takes less floor space |
 Price per pair* |
1200USD
vs
1700USD
|
costs less (*prices may change depending on the seller, location and time) |
 Height |
194mm
vs
196mm
|
Easier to fit in smaller spaces |
| General |
MartinLogan Motion 50XTi |
MartinLogan ElectroMotion ESL C |
| Brand |
MartinLogan |
MartinLogan |
| Speaker Type |
Center channel speaker |
Center channel speaker |
| Power Range |
20-300 watts |
20-300 watts |
| Sensitivity |
94 dB |
89 dB |
| Impedance |
4 ohms |
4 ohms |
| Frequency Response |
50-25k Hz |
66-23k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
5.25" |
| Woofer Composition |
Aluminum |
high-rigidity aluminum woofers |
| Woofer Surround Material |
Rubber |
n/a |
| Tweeter Size |
1.25 x 2.4" |
1 x 1-7/16" |
| Tweeter Type |
Folded Motion XT |
Folded Motion |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
9 x 6.375" |
| Crossover Frequency |
900Hz and 2200Hz |
n/a |
| Firing Direction |
rear |
n/a |
| Suggested Break-in Period |
Allow 72 hours of break-in at 90 dB |
Allow 72 hours of break-in at 90 dB |
Physical Specs |
|
|
| Height |
196.0mm (7.7") |
194.0mm (7.6") |
| Width |
585.0mm (23") |
582.0mm (22.9") |
| Depth |
347.0mm (13.7") |
410.0mm (16.1") |
| Weight |
13.86kg (30.5lbs) |
14.55kg (32lbs) |
| Enclosure |
Bass Reflex |
Passive Radiator |
| Finish |
MDF/Lacquer |
n/a |
| Available Colors |
Walnut |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
n/a |
Other |
|
|
| Parts Warranty |
5 Years |
5 Yrs w/ Registration |
| Labor Warranty |
5 Years |
5 Yrs w/ Registration |