MartinLogan Motion F20 is a 3-way Passive Bass Reflex Floor-standing speaker by MartinLogan. It features a 1.0 x 1.4" Folded Motion Ribbon Tweeter, 1 x 5.5" Midrange and 2 x 5.5" Aluminum Woofer. The speaker has a frequency range of 35-25k Hz and a sensitivity of 92 dB. MartinLogan Motion F20 has an MSRP of 3498$ per pair.
Room Size Suitability
The size of the room where you plan to use the MartinLogan Motion F20 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 Motion F20 Lifestyle
MartinLogan's Motion(4th Gen) Series of Loudspeakers
Motion F20 is a member of MartinLogan's Motion(4th Gen) series of Passive speakers. Below you can see the main specs of these speakers.
MartinLogan Motion(4th Gen) Series Speakers
MartinLogan Motion(4th Gen) Series Speakers
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Frequency Response of the MartinLogan Motion F20 Speaker
MartinLogan Motion F20 has a Frequency response range of 35-25k Hz at ±3dB and Power Range of 20-300 watts. With a minimum frequency of 35 Hz, Motion F20 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.
To focus on the subwoofers that are in a similar price range with MartinLogan Motion F20, check out the Powered Subwoofers under $5000. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how Motion F20's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing Speakers
MartinLogan Motion F20's Aluminum Woofer
Among the speakers in our database with a max MSRP price of 5000$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the MartinLogan Motion F20's 35Hz:
MartinLogan Motion F20's Folded Motion Ribbon Tweeter
Crossover frequency of the MartinLogan Motion F20?
Motion F20 is a 3-way speaker and its crossover frequency between the woofer and the midrange set to 230Hz and the Crossover frequency between the midrange and the tweeter is set to 2600Hz.
Impedance and Sensitivity
MartinLogan Motion F20'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 F20 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 F20 with an AVR but use an Integrated Amplifier instead.
Sensitivity
92dB of the MartinLogan Motion F20 is considered a high sensitivity compared to average stereo speaker which makes Motion F20 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 F20 will be a good choice.
Check the amplifiers that are in a similar price range to the MartinLogan Motion F20:
Input Type
Motion F20 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 F20 Back View
Recommended Break In
Allow 72 hours of break-in.
MartinLogan Motion F20 External Dimensions and Weight
MartinLogan Motion F20 has external dimensions of (Height x Width x Depth) 44-3/4inch x 11-3/4inch x 14-1/4inch (1127 x 298 x 362mm ).
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 F20 is approximately 1078.8cm2 / 167.2inch2.
WeightThe MartinLogan Motion F20 weighs 27.20kg / 59.8lbs per piece. Here is a comparison of how Motion F20's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $5000
Cabinet type and Materials
MartinLogan Motion F20 has a
Bass Reflex type cabinet. 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 F20 - Side View
MartinLogan Motion F20 Feet
Port Position
MartinLogan Motion F20 is a bottom-firing port speaker
Available colors
MartinLogan Motion F20 is available in Gloss Black, Walnut and and Satin White.
MartinLogan Motion F20 Colors
Does the MartinLogan Motion F20 come with a Grille?
Motion F20 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 F20 with Grille
Recommended Accessories
Here is a list of accessories that we think you may need for the MartinLogan Motion F20.
Official Brochure
Here is a link to download the official brochure for the MartinLogan Motion F20 speaker:
Official Brochure for MartinLogan Motion F20
Official Product Page
Official manufacturer's product page for the MartinLogan Motion F20 speaker can be found below:
Official Product Page for MartinLogan Motion F20
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.