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Monitor Audio CP-WT380IDC vs MartinLogan Motion XT CI XTW6 Comparison

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Monitor Audio CP-WT380IDC

Passive In-wall | 50-30kHz

Monitor Audio CP-WT380IDC
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MartinLogan Motion XT CI XTW6

Passive In-wall | 56-25kHz

MartinLogan Motion XT CI XTW6
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Monitor Audio CP-WT380IDC Monitor Audio CP-WT3...
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MartinLogan Motion XT CI XTW6 MartinLogan Motion X...
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MartinLogan Motion X...
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Monitor Audio CP-WT380IDC vs MartinLogan Motion XT CI XTW6 Speaker Comparison

In this review, we will be comparing CP-WT380IDC and Motion XT CI XTW6, 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 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 Key Specs

  • 2-way Design
  • 1.27 x 2.4" Folded Motion Ribbon Tweeter
  • 6.5" Kevlar Woofer
  • 56-25kHz Frequency Response
  • 91 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:50-100watts
  • Dimensions (H x W x D): 258.0" x 7.0000" x 3.4375"( 258.0 x 178.0 x 88.0mm )

What size room are the Monitor Audio CP-WT380IDC and MartinLogan Motion XT CI XTW6 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
Near-field Poor Average
Small Room Average Good
Mid-size Room Good Average
Large Room Average Poor
Very Large Room Poor Bad

(* 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 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Drivers

One of the fundamental differences between these two speakers is that CP-WT380IDC is a 3-way design whereas the Motion XT CI XTW6 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.

Driver Monitor Audio CP-WT380IDC MartinLogan Motion XT CI XTW6
Driver Setup 3-way 2-way
Tweeter 1-inch 1.27 x 2.4-inch
Midrange 1 x 4-inch -
Woofer 1 x 8-inch 1 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 features a 1.27 x 2.4" Folded Motion Ribbon Tweeter and 1 x 6.5" Kevlar Woofer .

Frequency Response

CP-WT380IDC has a frequency range of 50-30kHz whereas Motion XT CI XTW6 has a frequency range of 56-25kHz. 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 XTW6's min frequency of 56Hz.

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

CP-WT380IDC
Motion XT CI XTW6
Min
Average
Max
High Frequency

In-wall Speakers

Monitor Audio CP-WT380IDC
MartinLogan Motion XT CI XTW6
Min
Average
Max

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 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's is rated at 91 dB. This 2 dB difference makes the MartinLogan Motion XT CI XTW6 a more sensitive speaker compared to Monitor Audio CP-WT380IDC, hence will play louder with the same amount of watts.

Sensitivity

In-wall Speakers

CP-WT380IDC
Motion XT CI XTW6
Min
Average
Max

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 120 watts RMS from the amp the whereas Motion XT CI XTW6 has a max power handling value of 100 watts RMS, 20 watts less than the CP-WT380IDC.

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 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'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 has external dimensions of 258.0 x 178.0 x 88.0mm ( 10.1250-inch x 7.0000-inch x 3.4375-inch) .

Monitor Audio CP-WT380IDC is clearly the larger of the two speakers. Its body is 91mm wider, 179mm taller and 11mm deeper than MartinLogan Motion XT CI XTW6.

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 speaker
  • Magnetic grille
  • Paint skim
  • Installation Guide
  • Important Safety Instructions
  • Limited Warranty/Registration Card
  • MountingTemplate
  • What's in the Box of MartinLogan Motion XT CI XTW6?

    Here are the items that come with the Motion XT CI XTW6:
  • In-wall loudspeaker
  • Grille
  • T20 torx-bit
  • User-feets Manual
  • Cutout Template

  • Reasons to choose Monitor Audio CP-WT380IDC over MartinLogan Motion XT CI XTW6
    Max Input Power 120 watts vs 100 watts Handle more power from your amplifier
    Driver Setup 3-way vs 2-way Have a dedicated mid-range driver
    Woofer Size 8 inches vs 6.5 inches Larger woofer
    Low Frequency Response 50 Hz vs 56 Hz Generates deeper bass
    High Frequency Response 30k Hz vs 25k Hz Generates higher frequency

    Reasons to choose MartinLogan Motion XT CI XTW6 over Monitor Audio CP-WT380IDC

    Sensitivity 91 dB vs 89 dB Play louder with same amount of amplification power
    Nominal Impedance 8 ohms vs 6 ohms Less selective with amplifiers
    Height 258mm vs 437mm Easier to fit in smaller spaces
    Base Surface Area 156cm2 vs 266cm2 Takes less floor space
    Price per pair* 1600USD vs 2350USD costs less (*prices may change depending on the seller, location and time)
    Monitor Audio CP-WT380IDC vs MartinLogan Motion XT CI XTW6 Specs Table
    Detailed comparison of specifications
    General Monitor Audio CP-WT380IDC MartinLogan Motion XT CI XTW6
    Brand Monitor Audio MartinLogan
    Speaker Type Passive In-wall Speaker Passive In-wall Speaker
    Power Range 30-120 watts 50-100 watts
    Sensitivity 89 dB 91 dB
    Impedance 6 ohms 8 ohms
    Frequency Response 50-30kHz 56-25kHz
    Drivers
    Woofer Quantity 1 1
    Woofer Size 8" 6.5"
    Woofer Composition C-CAM Kevlar
    Woofer Surround Material Rubber Rubber
    Tweeter Size 1" 1.27 x 2.4"
    Tweeter Type Hard-Dome Folded Motion Ribbon
    Aimable Tweeter No No
    Midrange Driver 4" N/A"
    Physical Specs
    Height 437.0mm (17.2") 258.0mm (10.2")
    Width 269.0mm (10.6") 178.0mm (7")
    Depth 99.0mm (3.9") 88.0mm (3.5")
    Enclosure In-wall In-wall
    Moisture Resistancy No No
    Connections
    Biamp Inputs No No
    Other
    Parts Warranty Lifetime 5 Years
    Labor Warranty Lifetime 5 Years

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