MartinLogan Motion 40i is a 3-way Passive Bass Reflex Floor-standing speaker by MartinLogan. It was released in 2018. It features a 1.0 x 1.4" Folded Motion Tweeter, 1 x 5.5" Midrange and 2 x 6.5" Aluminum Woofer. The speaker has a frequency range of 40-25k Hz and a sensitivity of 92 dB. MartinLogan 40i has an MSRP of 2600$ per pair but can often be found around 2080$ per pair.
Room Size Suitability
The size of the room where you plan to use the MartinLogan 40i 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 | Bad |
| Small Room | Poor |
| Mid-size Room | Average |
| 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 40i Lifestyle
MartinLogan's Motion Series of Loudspeakers
Motion 40i is a member of MartinLogan's Motion series of Passive speakers. The Motion range are MartinLogan's popular speakers using the brand's Folded Motion tweeter in conventional cabinets. Below you can see the main specs of these speakers.
See all 10 MartinLogan Motion models compared »
MartinLogan Motion Series Speakers
MartinLogan Motion Series Speakers
Frequency Response of the MartinLogan 40i Speaker
MartinLogan 40i has a Frequency response range of 40-25k Hz and Power Range of 20-300 watts. With a minimum frequency of 40 Hz, Motion 40i delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.
Here we have a comparison of how Motion 40i's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
Thinking about a subwoofer for the MartinLogan 40i?
Among the speakers in our database with a max MSRP price of 3000$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the MartinLogan 40i's 40Hz:
MartinLogan 40i's Folded Motion Tweeter
Crossover frequency of the MartinLogan 40i?
Motion 40i is a 3-way speaker and its crossover frequency between the woofer and the midrange is set to 500 Hz and the crossover frequency between the midrange and the tweeter is set to 2600 Hz.
MartinLogan 40i Crossover is set to 500Hz and 2600Hz
Impedance and Sensitivity
MartinLogan 40i's nominal impedance level is
4 ohms and has a sensitivity of
92 dB.
Sensitivity
Floor-standing Speakers
Nominal Impedance of the 4 Ohms means that the MartinLogan Motion 40i 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 40i with an AVR but use an Integrated Amplifier instead.
Sensitivity
92dB of the MartinLogan Motion 40i is considered a high sensitivity compared to average stereo speaker which makes Motion 40i 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 40i will be a good choice. Work out how loud the MartinLogan 40i plays in your room →
Running more than one pair from a single amplifier? Check the load it would present →
What amplifier does the MartinLogan 40i need?
At normal listening levels in a medium room, about
9.5–150 W
per channel into 4 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $3,000, or every amplifier we cover.
Input Type
Motion 40i 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.
Work out what gauge speaker cable this run needs →
MartinLogan 40i Back View
MartinLogan 40i's Custom 5-way bi-wire tool-less binding posts terminals allows Bi-amping or bi-wiring
Recommended Break In
Allow 72 hours of break-in at 90 dB.
MartinLogan 40i External Dimensions and Weight
MartinLogan 40i has external dimensions of (Height x Width x Depth) 41-1/2 x 7-9/16 x 13-1/16inch (1055.0 x 193.0 x 332.0mm ).
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 40i is approximately 640.8cm2 / 99.3inch2.
To get a better perspective on the real life size of MartinLogan 40i, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
MartinLogan 40i Speaker Size Compared to a Compact Disc
Here we place the MartinLogan 40i virtually next to a standard width amplifier and turntable on a media center to get a better idea about the size.
MartinLogan 40i Floor-standing Speaker next to a Media Stand
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe MartinLogan 40i weighs 20.40kg / 44.9lbs per piece. Here is a comparison of how Motion 40i's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $3000
Cabinet type and Materials
MartinLogan 40i has a
Bass Reflex type cabinet and a MDF/Lacquer 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 40i - Side View
Speaker Feet
MartinLogan 40i comes with the parts below which you can use to secure your loudspeaker on the surface that you are putting on:
- 4 Rubber feet (pre-installed)
- 4 Spike feet (w/ nuts attached)
It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.
Port Position
MartinLogan 40i 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.
MartinLogan 40i Port
Available colors
MartinLogan 40i is available in Gloss Black, Matt White and Red Walnut.
MartinLogan 40i Colors
Does the MartinLogan 40i come with a Grille?
Motion 40i comes with magnetic 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. Since the included grille of the Motion 40i is magnetic type, it is very easy to put it on and off.
MartinLogan 40i with Grille
What's in the Box of MartinLogan 40i?
Here are the items that are included inside the box of Motion 40i:
- Floorstanding loudspeaker
- 2 Grilles
- 4 Rubber feet (pre-installed)
- 4 Spike feet (w/ nuts attached)
- Users Manual
- Warranty/Registration Information
Recommended Accessories
Here is a list of accessories that we think you may need for the MartinLogan Motion 40i.
User's Manual
For more information about how to setup, use and maintain the MartinLogan Motion 40i, use the direct link below to download the official manual document:
Download User Manual for MartinLogan 40i
Official Brochure
Here is a link to download the official brochure for the MartinLogan Motion 40i speaker:
Official Brochure for MartinLogan 40i
Official Product Page
Official manufacturer's product page for the MartinLogan Motion 40i speaker can be found below:
Official Product Page for MartinLogan 40i
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.