In this review, we will be comparing CP-WT380IDC and Motion XT CI XTW6-LCR, two Passive In-wall speakers from Monitor Audio and MartinLogan. Let's have a brief look at the main features
of Monitor Audio CP-WT380IDC and MartinLogan Motion XT CI XTW6-LCR first before getting into our more
detailed comparison.
Monitor Audio CP-WT380IDC Key Specs
- 3-way Design
- 1" Hard-Dome Tweeter
- 4" Midrange
- 8" C-CAM Woofer
- 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 )
MartinLogan Motion XT CI XTW6-LCR Key Specs
- 3-way Design
- 1.27 x 2.4" Folded Motion Ribbon Tweeter
- 6.5" Midrange
- 2 x 6.5" Kevlar Woofer
- 6.5" Midrange
- 44-25kHz Frequency Response
- 93 dB Sensitivity
- Impedance: 8ohms
- Power Range:50-150watts
- Dimensions (H x W x D): 686.0" x 6.6250" x 3.5625"( 686.0 x 169.0 x 91.0mm )
What size room are the Monitor Audio CP-WT380IDC and MartinLogan Motion XT CI XTW6-LCR 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* |
Monitor Audio CP-WT380IDC |
MartinLogan Motion XT CI XTW6-LCR |
| 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 Monitor Audio CP-WT380IDC and MartinLogan Motion XT CI XTW6-LCR 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
Both CP-WT380IDC and Motion XT CI XTW6-LCR are 3-way speakers.
| Driver |
Monitor Audio CP-WT380IDC |
MartinLogan Motion XT CI XTW6-LCR |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1.27 x 2.4-inch
|
|
Midrange
|
1 x 4-inch |
1 x 6.5-inch |
|
Woofer
|
1 x 8-inch
|
2 x 6.5-inch
|
CP-WT380IDC features a 1" Hard-Dome Tweeter , a 4" Midrange and 1 x 8" C-CAM Woofer . On the other hand, the Motion XT CI XTW6-LCR features a 1.27 x 2.4" Folded Motion Ribbon Tweeter , a 6.5" Midrange and 2 x 6.5" Kevlar Woofer .
Frequency Response
CP-WT380IDC has a frequency range of 50-30kHz whereas Motion XT CI XTW6-LCR has a frequency range of 44-25kHz. With a minimum frequency of 44Hz, the Motion XT CI XTW6-LCR can go significantly deeper on the low side and provide stronger bass compared to the CP-WT380IDC's min frequency of 50Hz.
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
Monitor Audio CP-WT380IDC
MartinLogan Motion XT CI XTW6-LCR
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
CP-WT380IDC is a 6 ohms speaker compared to the Motion XT CI XTW6-LCR which has a nominal impedance of 8 ohms.
These two speakers also have different sensitivity levels. CP-WT380IDC sensitivity is rated at 89 dB and the Motion XT CI XTW6-LCR's is rated at 93 dB. This 4 dB difference makes the MartinLogan Motion XT CI XTW6-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.
CP-WT380IDC can handle a max power of 150 watts RMS from the amp the whereas CP-WT380IDC has a max power handling value of 120 watts RMS , 30 watts less than the Motion XT CI XTW6-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
CP-WT380IDC features Spring post type posts and Motion XT CI XTW6-LCR 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 Monitor Audio CP-WT380IDC's and MartinLogan Motion XT CI XTW6-LCR's external dimensions. 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) whereas MartinLogan Motion XT CI XTW6-LCR has external dimensions of 686.0 x 169.0 x 91.0mm ( 27.0000-inch x 6.6250-inch x 3.5625-inch) .
MartinLogan Motion XT CI XTW6-LCR is 100mm narrower and 8mm less deeper than Monitor Audio CP-WT380IDC but it is also 249mm taller.
What's in the Box of Monitor Audio CP-WT380IDC?
Here are the items that are included inside the box of CP-WT380IDC:
In-Wall speakerMagnetic grillePaint skimInstallation GuideImportant Safety InstructionsLimited Warranty/Registration CardMountingTemplate
What's in the Box of MartinLogan Motion XT CI XTW6-LCR?
Here are the items that come with the Motion XT CI XTW6-LCR:
In-wall LCR loudspeakerGrilleT20 torx-bitUser-feets ManualCutout Template
Woofer Size 
High Frequency Response 
Height 
Price per pair* 
Max Input Power 
Sensitivity 
Nominal Impedance 
Base Surface Area