In this review, we will be comparing two different types of speakers by MartinLogan. MartinLogan ElectroMotion ESL C is a Center Channel speaker whereas the ESL X is a Floor-standing speaker.
Let's have a brief look at the main features
of MartinLogan ESL C and MartinLogan ESL X first before getting into our more
detailed comparison.
| Key Specs | MartinLogan ESL C | MartinLogan ESL X |
|---|
| Design | 3-way | 2-way |
|---|
| Tweeter | 1 x 1-7/16" Folded Motion | 8.6 x 40" curved electrostatic transducer |
|---|
| Midrange | 9 x 6.375" | — |
|---|
| Woofer | 2 x 5.25" high-rigidity aluminum woofers | 2 x 8" high-excursion paper cone |
|---|
| Frequency response | 66-23k Hz | 41-22k Hz |
|---|
| Sensitivity | 89 dB | 91 dB |
|---|
| Impedance | 4 ohms | 6 ohms |
|---|
| Power range | 20-300 watts | 20-400 watts |
|---|
| Weight | 14.55kg / 32lbs | 23.64kg / 52lbs |
|---|
| Dimensions (H x W x D) | 7-5/8" x 22-7/8" x 16-1/8"
194.0 x 582.0 x 410.0mm | 59-1/4" x 9-7/16" x 20-3/4"
1505.0 x 240.0 x 528.0mm |
|---|
ElectroMotion ESL C and ESL X are members of MartinLogan's ElectroMotion series of speakers. Below you can find the loudspeakers from this series.
MartinLogan ElectroMotion Series
History
What size room are the MartinLogan ESL C and MartinLogan ESL X 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* |
MartinLogan ESL C |
MartinLogan ESL X |
| Near-field |
Poor |
Are you nuts? |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Good |
Average |
| Large Room |
Good |
Good |
| Very Large Room |
Average |
Good |
(* 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 ElectroMotion ESL C is a 3-way design whereas the ESL X 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.
MartinLogan ESL CMartinLogan ESL X
Woofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
MartinLogan ESL C |
MartinLogan ESL X |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1 x 1-7/16-inch
|
8.6 x 40-inch
|
|
Midrange
|
1 x 9 x 6.375-inch |
- |
|
Woofer
|
2 x 5.25-inch
|
2 x 8-inch
|
ElectroMotion ESL C features a 1 x 1-7/16" Folded Motion Tweeter, a 9 x 6.375" Midrange and 2 x 5.25" high-rigidity aluminum woofers Woofer. On the other hand, the ESL X features a 8.6 x 40" curved electrostatic transducer Tweeter and 2 x 8" high-excursion paper cone Woofer.
Frequency Response
ElectroMotion ESL C has a frequency range of 66-23k Hz whereas ESL X has a frequency range of 41-22k Hz. With a minimum frequency of 41Hz, the ESL X can go significantly deeper on the low side and provide stronger bass compared to the ElectroMotion ESL C's min frequency of 66Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Center Channel class in our database.
Low Frequency
Center Channel Speakers
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
ElectroMotion ESL C is a 4 ohms speaker compared to the ESL X which has a nominal impedance of 6 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the ElectroMotion ESL C can provide this impedance level.
These two speakers also have different sensitivity levels. ElectroMotion ESL C sensitivity is rated at 89 dB and the ESL X's is rated at 91 dB. This 2 dB difference makes the MartinLogan ESL X a more sensitive speaker compared to MartinLogan ESL C, hence will play louder with the same amount of watts.
Sensitivity
Center Channel Speakers
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.
ESL X can handle a max power of 400 watts RMS, whereas ElectroMotion ESL C has a max power handling value of 300 watts RMS, 100 watts less than the ESL X.
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.
Input Type and Bi-Amping / Bi-Wiring
ESL X features Binding post 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 ESL C's Binding post terminals
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 MartinLogan ESL C's and MartinLogan ESL X's external dimensions. 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) whereas MartinLogan ESL X has external dimensions of 1505.0 x 240.0 x 528.0mm (59-1/4 x 9-7/16 x 20-3/4inch).
MartinLogan ESL C is 1311mm shorter and 118mm less deeper than MartinLogan ESL X but it is also 342mm 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 MartinLogan ESL C is approximately 2386.2cm2 / 369.9inch2 and base area of the MartinLogan ESL X is approximately 1267.2cm2 / 196.4inch2. The ElectroMotion ESL C requires 88% more surface area than the ESL X which gives it a small disadvantage on placement in tight spaces.
What's in the Box of MartinLogan ESL C?
Here are the items that are included inside the box of ElectroMotion ESL C:
- Center-channel loudspeaker
- Grille
- AC power supply (attached 10-feet DC cord)
- User-feets Manual (En/Fr)
- Product Registration Card
What's in the Box of MartinLogan ESL X?
Here are the items that come with the ESL X:
- Floor-standing hybrid electrostatic loudspeaker
- AC power adapter (w/ attached 10-feet DC cord)
- Cloth grille (installed)
- 4 Pre-installed feet
- Users Manual (En/Fr)
- Product Registration Card