In this review, we will be comparing Motion XT CI XTW5-LCR and CP-WT380IDC, two Passive In-wall speakers from MartinLogan and Monitor Audio. Let's have a brief look at the main features
of MartinLogan Motion XT CI XTW5-LCR and Monitor Audio CP-WT380IDC first before getting into our more
detailed comparison.
MartinLogan Motion XT CI XTW5-LCR Key Specs
- 2-way Design
- 1.27 x 2.4" Folded Motion Ribbon Tweeter
- 2 x 5.25" Kevlar Woofer
- 61-25kHz Frequency Response
- 92 dB Sensitivity
- Impedance: 8ohms
- Power Range:50-125watts
- Dimensions (H x W x D): 166.0" x 14.5000" x 3.3125"( 166.0 x 369.0 x 85.0mm )
Monitor Audio CP-WT380IDC Key Specs
- 3-way Design
- 1" Hard-Dome Tweeter
- 4" Midrange
- 8" C-CAM Woofer
- 4" Midrange
- 50-30kHz Frequency Response
- 89 dB Sensitivity
- Impedance: 6ohms
- Power Range:30-120watts
- Dimensions (H x W x D): 437.0" x 10.5625" x 3.8750"( 437.0 x 269.0 x 99.0mm )
What size room are the MartinLogan Motion XT CI XTW5-LCR and Monitor Audio CP-WT380IDC 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 Motion XT CI XTW5-LCR |
Monitor Audio CP-WT380IDC |
| Near-field |
Poor |
Poor |
| Small Room |
Average |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Average |
Average |
| Very Large Room |
Poor |
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 MartinLogan Motion XT CI XTW5-LCR and Monitor Audio CP-WT380IDC 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 XT CI XTW5-LCR is a 2-way design whereas the CP-WT380IDC 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 XT CI XTW5-LCR |
Monitor Audio CP-WT380IDC |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1.27 x 2.4-inch
|
1-inch
|
|
Midrange
|
- |
1 x 4-inch |
|
Woofer
|
2 x 5.25-inch
|
1 x 8-inch
|
Motion XT CI XTW5-LCR features a 1.27 x 2.4" Folded Motion Ribbon Tweeter and 2 x 5.25" Kevlar Woofer . On the other hand, the CP-WT380IDC features a 1" Hard-Dome Tweeter , a 4" Midrange and 1 x 8" C-CAM Woofer .
Frequency Response
Motion XT CI XTW5-LCR has a frequency range of 61-25kHz whereas CP-WT380IDC has a frequency range of 50-30kHz. With a minimum frequency of 50Hz, the CP-WT380IDC can go significantly deeper on the low side and provide stronger bass compared to the Motion XT CI XTW5-LCR's min frequency of 61Hz.
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 In-wall class in our database.
Low Frequency
In-wall Speakers
High Frequency
In-wall Speakers
MartinLogan Motion XT CI XTW5-LCR
Monitor Audio CP-WT380IDC
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 XT CI XTW5-LCR is a 8 ohms speaker compared to the CP-WT380IDC which has a nominal impedance of 6 ohms.
These two speakers also have different sensitivity levels. Motion XT CI XTW5-LCR sensitivity is rated at 92 dB and the CP-WT380IDC's is rated at 89 dB. This 3 dB difference makes the MartinLogan Motion XT CI XTW5-LCR a more sensitive speaker compared to Monitor Audio CP-WT380IDC, hence will play louder with the same amount of watts.
Sensitivity
In-wall 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 XT CI XTW5-LCR can handle a max power of 125 watts RMS from the amp the whereas CP-WT380IDC has a max power handling value of 120 watts RMS, 5 watts less than the Motion XT CI XTW5-LCR.
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 XT CI XTW5-LCR features Spring post type posts and CP-WT380IDC has a Spring post type posts. None of these speakers feature bi-amping/bi-wiring.
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 XT CI XTW5-LCR's and Monitor Audio CP-WT380IDC's external dimensions. MartinLogan Motion XT CI XTW5-LCR has external dimensions of 166.0 x 369.0 x 85.0mm ( 6.5000-inch x 14.5000-inch x 3.3125-inch) whereas Monitor Audio CP-WT380IDC has external dimensions of 437.0 x 269.0 x 99.0mm ( 17.1875-inch x 10.5625-inch x 3.8750-inch) .
MartinLogan Motion XT CI XTW5-LCR is 271mm shorter and 14mm less deeper than Monitor Audio CP-WT380IDC but it is also 100mm wider.
What's in the Box of MartinLogan Motion XT CI XTW5-LCR?
Here are the items that are included inside the box of Motion XT CI XTW5-LCR:
In-wall LCR loudspeakerGrilleT20 torx-bitUser-feets ManualCutout Template
What's in the Box of Monitor Audio CP-WT380IDC?
Here are the items that come with the CP-WT380IDC:
In-Wall speakerMagnetic grillePaint skimInstallation GuideImportant Safety InstructionsLimited Warranty/Registration CardMountingTemplate
Max Input Power 
Sensitivity 
Nominal Impedance 
Number of Woofers 
Height 
Price per pair* 
Driver Setup 
High Frequency Response 
Base Surface Area