MartinLogan Motion® XT B100 is a 2-way Passive Bass Reflex Bookshelf speaker by MartinLogan. It features a 1.25 x 2.4" Folded Motion XT Tweeter and 1 x 6.5" Kevlar Woofer. The speaker has a frequency range of 45-25k Hz and a sensitivity of 93 dB. MartinLogan Motion XT B100 has an MSRP of 1598$ per pair.
Room Size Suitability
The size of the room where you plan to use the MartinLogan Motion XT B100 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Poor |
| Small Room | Poor |
| Mid-size Room | Good |
| Large Room | Good |
| Very Large Room | Average |
(* 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.)
MartinLogan Motion XT B100 Lifestyle
MartinLogan's Motion XT Series of Loudspeakers
Motion XT B100 is a member of MartinLogan's Motion XT series of Passive speakers. Below you can see the main specs of these speakers.
MartinLogan Motion XT Series Speakers
MartinLogan Motion XT Series Speakers
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Frequency Response of the MartinLogan Motion XT B100 Speaker
MartinLogan Motion XT B100 has a Frequency response range of 45-25k Hz at ±3dB and Power Range of 20-250 watts. With a minimum frequency of 45 Hz, Motion XT B100 delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
To focus on the subwoofers that are in a similar price range with MartinLogan Motion XT B100, check out the Powered Subwoofers under $3000. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how Motion XT B100's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Bookshelf Speakers
MartinLogan Motion XT B100
High Frequency
Bookshelf Speakers
MartinLogan Motion XT B100
MartinLogan Motion XT B100's Kevlar Woofer
MartinLogan Motion XT B100's Folded Motion XT Tweeter
Crossover frequency of the MartinLogan Motion XT B100?
The Crossover frequency of the Motion XT B100 is set to 2600Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.
Impedance and Sensitivity
MartinLogan Motion XT B100's nominal impedance level is
4 ohms and has a sensitivity of
93 dB.
Sensitivity
Bookshelf Speakers
MartinLogan Motion XT B100
Nominal Impedance of the 4 Ohms means that the MartinLogan Motion® XT B100 is a difficult to drive speaker from nominal Impedance perspective, make sure that you choose an amplifier than can provide 4 Ohms for this speaker.
Many AVRs (audio/video receiver) in the market may have difficulty when the speakers dip below the 4 Ohms levels (this may cause clipping or even physical damage), so we recommend to not pair the MartinLogan Motion® XT B100 with an AVR but use an Integrated Amplifier instead.
Sensitivity
93dB of the MartinLogan Motion® XT B100 is considered a high sensitivity compared to average stereo speaker which makes Motion XT B100 an easy to drive from Sensitivity perspective. If you are planning to power your speaker with a Tube amp which are generally very low power, the MartinLogan Motion XT B100 will be a good choice.
Check the amplifiers that are in a similar price range to the MartinLogan Motion XT B100:
Input Type
Motion XT B100 has Custom 5-way bi-wire tool-less binding posts type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.
MartinLogan Motion XT B100 Back View
Recommended Break In
Allow 72 hours of break-in.
MartinLogan Motion XT B100 External Dimensions and Weight
MartinLogan Motion XT B100 has external dimensions of (Height x Width x Depth) 14-1/2-inch x 8inch x 12-1/2inch (368 x 203 x 318mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of MartinLogan Motion XT B100 is approximately 645.5cm2 / 100.1inch2.
To get a better perspective on the real life size of MartinLogan Motion XT B100, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
MartinLogan Motion XT B100 Speaker Size Compared to a Compact Disc
Here we place the MartinLogan Motion XT B100 virtually next to a standard width amplifier and turntable on a BDI Octave Media Cabinet to get a better idea about the size.
MartinLogan Motion XT B100 Speaker next to an amplifier and turntable
WeightThe MartinLogan Motion XT B100 weighs 9.30kg / 20.5lbs per piece. Here is a comparison of how Motion XT B100's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
MartinLogan Motion XT B100
Weight
Bookshelf Speakers under $3000
MartinLogan Motion XT B100
Cabinet type and Materials
MartinLogan Motion XT B100 has a
Bass Reflex type cabinet and a MDF/Wood veneer finish. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
MartinLogan Motion XT B100 - Side View
Port Position
MartinLogan Motion XT B100 is a rear-firing port speaker so you have to make sure you leave enough space between the back of the speaker and wall or bookshelf so that it has room to breathe.
Available colors
MartinLogan Motion XT B100 is available in Gloss Black, Walnut and and Satin White.
MartinLogan Motion XT B100 Colors
Wall Mounting
Motion XT B100 doesn't sport any built-in mounting bracket, so you need an external structure to mount it on walls.
Speaker Stands
MartinLogan sells a dedicated speaker stand for the Motion XT B100 with a model name
MartinLogan STAND25. You can check the latest price and availability of these stands at
B&H PHOTO and
Amazon.
MartinLogan STAND25 Speaker Stands for MartinLogan Motion XT B100
Does the MartinLogan Motion XT B100 come with a Grille?
Motion XT B100 comes with Secure-Lock grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.
MartinLogan Motion XT B100 with Grille
Recommended Accessories
Here is a list of accessories that we think you may need for the MartinLogan Motion® XT B100.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators more affordable options too.
- Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.
- Speaker Stands: Stands bring your bookshelf speakers to ideal height (rule of thumb is to have the tweeter level with your ear in your listening position), helps stability and acoustical isolation.
Official Brochure
Here is a link to download the official brochure for the MartinLogan Motion® XT B100 speaker:
Official Brochure for MartinLogan Motion XT B100
Official Product Page
Official manufacturer's product page for the MartinLogan Motion® XT B100 speaker can be found below:
Official Product Page for MartinLogan Motion XT B100
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.