MartinLogan Motion SLM is a 2-way Passive Bookshelf speaker by MartinLogan. It was released in 2014. It features a 1x1.4" Folded Motion Ribbon Tweeter and 2 x 4" Woofer. The speaker has a frequency range of 110-25k Hz and a sensitivity of 94 dB.
MartinLogan's Motion Series of Loudspeakers
Motion SLM 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 Motion SLM Speaker
MartinLogan Motion SLM has a Frequency response range of 110-25k Hz. With a minimum frequency of 110 Hz, it is hard to expect a strong bass response from Motion SLM so depending on your use case, using a subwoofer will significantly help to widen the response range.
Here we have a comparison of how Motion SLM's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Bookshelf Speakers
Thinking about a subwoofer for the MartinLogan Motion SLM?
Impedance and Sensitivity
MartinLogan Motion SLM's nominal impedance level is
4 ohms and has a sensitivity of
94 dB.
Sensitivity
Bookshelf Speakers
Nominal Impedance of the 4 Ohms means that the MartinLogan Motion SLM 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 SLM with an AVR but use an Integrated Amplifier instead.
Sensitivity
94dB of the MartinLogan Motion SLM is considered a high sensitivity compared to average stereo speaker which makes Motion SLM 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 SLM will be a good choice. Work out how loud the MartinLogan Motion SLM plays in your room →
Running more than one pair from a single amplifier? Check the load it would present →
What amplifier does the MartinLogan Motion SLM need?
At normal listening levels in a medium room, about
6.0–95 W
per channel into 4 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $750, or every amplifier we cover.
Input Type
Motion SLM features Spring post type connectors.
Work out what gauge speaker cable this run needs →
MartinLogan Motion SLM External Dimensions and Weight
MartinLogan Motion SLM has external dimensions of (Height x Width x Depth) (642.9 x 163.5 x 47.6mm ).
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 SLM is approximately 77.8cm2 / 12.1inch2.
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe MartinLogan Motion SLM weighs 2.95kg / 6.5lbs per piece. Here is a comparison of how Motion SLM's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Available colors
MartinLogan Motion SLM is available in Gloss Black.
Wall Mounting
Motion SLM doesn't sport any built-in mounting bracket, so you need an external structure to mount it on walls.
Recommended Accessories
Here is a list of accessories that we think you may need for the MartinLogan Motion SLM.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find 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.
Warranty
5 Yrs w/ Registration of parts warranty and 5 Yrs w/ Registration of labor warranty is generally provided by the manufacturer.