MartinLogan Motion 8i is a 2-way Passive Passive Radiator Center Channel speaker by MartinLogan. Center channel speaker is an important component of a home theater system set-up as it delivers the listener significant part of the on-screen dialogue from your television. It features a 1.0 x 1.4" Folded Motion Tweeter and 2 x 4" poly cone woofers with rigid dust caps Woofer. The speaker has a frequency range of 70-23k Hz and a sensitivity of 89 dB. MartinLogan 8i has an MSRP of 450$.
Room Size Suitability
The size of the room where you plan to use the MartinLogan 8i 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 | Average |
| Mid-size Room | Good |
| Large Room | Average |
| Very Large Room | 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.)
MartinLogan 8i Lifestyle
MartinLogan's Motion Series of Loudspeakers
Motion 8i is a member of MartinLogan's Motion series of Passive speakers. Below you can see the main specs of these speakers.
MartinLogan Motion Series Speakers
MartinLogan Motion Series Speakers
**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.
Frequency Response of the MartinLogan 8i Speaker
MartinLogan 8i has a Frequency response range of 70-23k Hz at ±3dB and Power Range of 20-180 watts.
Here we have a comparison of how Motion 8i's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Center Channel Speakers
High Frequency
Center Channel Speakers
MartinLogan 8i's Folded Motion Tweeter
MartinLogan 8i Crossover
Impedance and Sensitivity
MartinLogan 8i's nominal impedance level is
4 ohms and has a sensitivity of
89 dB.
Sensitivity
Center Channel Speakers
Nominal Impedance of the 4 Ohms means that the MartinLogan Motion 8i 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 8i with an AVR but use an Integrated Amplifier instead.
Sensitivity
89dB of the MartinLogan Motion 8i is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.
Check the amplifiers that are in a similar price range to the MartinLogan 8i:
Input Type
Motion 8i features Spring post type connectors. Bi-amping and Bi-wiring are not possible.
MartinLogan 8i Back View
MartinLogan 8i's Spring post terminals
Recommended Break In
Allow 72 hours of break-in at 90 dB.
MartinLogan 8i External Dimensions and Weight
MartinLogan 8i has external dimensions of (Height x Width x Depth) 5-9/16 x 22-1/8 x 5-1/4inch (142.0 x 562.0 x 134.0mm ).
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 8i is approximately 753.1cm2 / 116.7inch2.
WeightThe MartinLogan 8i weighs 3.86kg / 8.5lbs per piece. Here is a comparison of how Motion 8i's weight compares with the average, max and min weights in its class.
Weight
All Center Channel Speakers
Weight
Center Channel Speakers under $500
Cabinet type and Materials
MartinLogan 8i has a
Passive Radiator type cabinet.
Available colors
MartinLogan 8i is available in Gloss Black, Matt White and Red Walnut.
Does the MartinLogan 8i come with a Grille?
Motion 8i comes with perforated metal 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 8i with Grille
What's in the Box of MartinLogan 8i?
Here are the items that are included inside the box of Motion 8i:
LCR loudspeakerGrille2 Wall-bracket2 Shoulder bolts4 Rubber bumpersCleaning clothUser-feets Manual (En/Fr)Installation templateProduct Registration Card
Recommended Accessories
Here is a list of accessories that we think you may need for the MartinLogan Motion 8i.
User's Manual
For more information about how to setup, use and maintain the MartinLogan Motion 8i, use the direct link below to download the official manual document:
Download User Manual for MartinLogan 8i
Official Brochure
Here is a link to download the official brochure for the MartinLogan Motion 8i speaker:
Official Brochure for MartinLogan 8i
Official Product Page
Official manufacturer's product page for the MartinLogan Motion 8i speaker can be found below:
Official Product Page for MartinLogan 8i
Warranty
5 Yrs w/ Registration of parts warranty and 5 Yrs w/ Registration of labor warranty is generally provided by the manufacturer.