Motion 15i is a 2-way Passive Bass Reflex Bookshelf speaker by MartinLogan. It features a 1.0 x 1.4" Folded Motion Tweeter and 1 5.25" Aluminum Woofer.
MartinLogan 15i is a member of MartinLogan's Motion series of speakers. Below you can see the latest models in this series and how their main specs have changed with each new version.
MartinLogan Motion Series History
Motion 15i has a Frequency response range of 60-25k Hz and Power Range of 20-200 watts.
Crossover frequency for Motion 15i is at 2700Hz.
The Bookshelf model with the lowest Low Frequency level in our database is Polk S20, with bass extending down to impressive 39 Hz.
On the other hand, model with the highest Frequency is Revel M126Be with its high frequency limit of 44 kHz.
Impedance and Sensitivity
MartinLogan 15i's impedance level is 5 ohms and has a sensitivity of 92 dB.
Motion 15i features Custom 5-way tool-less binding posts type connectors. Bi-amping and Bi-wiring is not possible.
Cabinet type and Materials
MartinLogan 15i has a Bass Reflex type cabinet and MDF/Lacquer finish. MartinLogan 15i is a back-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 15i is available in Gloss Black.
Weight and Dimensions
MartinLogan 15i has external dimensions of (Height x Width x Depth) 26-28 (290.0mm x 173.0mm x 240.0mm ). Each speaker weighs 12lbs (5.40kg ).
Motion 15i doesn't sport any built-in mounting bracket so you need an external structure to mount on walls.
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.
Recommended Break In
Allow 72 hours of break-in at 90 dB.
Download User Manual for MartinLogan 15i
Official Brochure for MartinLogan 15i
Official Product Page
Official Product Page for MartinLogan 15i