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MartinLogan - Motion FX 5-1/4" 2-Way Bookshelf Speaker (Each) - Black

Product Features | Product Description | Product Details | Customer Reviews | Included Items | Similar Products
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Product Features

  • From our expanded online assortment; not available in all Best Buy stores
  • Handles up to 160 watts peak power For robust and controlled audio that is crisp and clear.
  • 5-1/4" paper cone woofers Doped for stability and damping with a rigid dust cap for powerful sound.
  • Dual Folded Motion tweeters Each featuring a 1" x 1-1/2" transducer and a lightweight diaphragm for stunning dynamic range and clarity.
  • Precision Vojtko crossover With air core coil and low DCR steel laminate inductors, polyester film and low DF electrolytic capacitors.
  • Push-style binding posts For a simple connection.
  • Bookshelf or wall-mountable For optimal placement.
  • 74Hz - 25kHz frequency response For faithful sound reproduction.
  • 4 ohms impedance Conducts power through the speakers. Compatible with 4-, 6- and 8-ohm amplifiers.
  • 2-way speaker system Sounds like 1 source rather than several separate sources.

Product Description

This bookshelf speaker features dual Folded Motion tweeters and a 5-1/4" paper cone woofer for enhanced dynamic range. The Precision Vojtko crossover ensures customized sound.

Product Details

Manufacturer MartinLogan Model Number MOFXBL
SKU 1684202 UPC 877929005764
Color Black Number Of Speakers 1
Product Depth 11.25 inches Number Of Tweeters Included 1
Color Black Number Of Woofers Included 1
Sensitivity 91 decibels Series Motion Series
Tweeter Size 1 inches Wireless Multi-Room Audio No
Enclosure Type Sealed Headphone Jack No
Speaker Type Bookshelf Manufacturer's Warranty - Labor 5 years
Woofer Size 5.25 inches Maximum Frequency Response 25 kilohertz
Manufacturer's Warranty - Parts 5 years Impedance 4 ohms
Input(s) Binding post Product Weight 8 pounds
Number of Drivers Included 3 Model Number MOFXBL
Tweeter Material Other App Compatible No
Number Of Midranges Included 0 Minimum Frequency Response 70 hertz
Driver Size 1 inches Speaker Wire Included No
Driver Material Other Cable(s) Included None
Woofer Material Paper Product Height 5.75 inches
RMS Power 80 watts Indoor Or Outdoor Use Indoor
Wireless No ENERGY STAR Certified No
Product Name Motion FX 5-1/4" 2-Way Bookshelf Speaker (Each) Peak Power Handling 160 watts
Brand MartinLogan Color Category Black
Product Width 12 inches Digital False
Pre-Owned False Height 5.75 inches
Width 12 inches Depth 11.25 inches
Weight 8 pounds Shipping Weight 12
Warranty Labor 5 years Warranty Parts 5 years
Type HardGood Sub Class PREM SURROUND SPKR

Customer Reviews

Customer Top Rated: True


4/21/2023 2:55:02 PM


Great addition to my Martin Logan speakers. Excellent surround sound speaker!


1/15/2023 11:43:38 PM

Doesn’t accept banana plugs

Phenomenal sound, but huge. Definitely not a speaker that you can hide away, but sound stage is amazing. Unfortunately the design does not allow for use of banana plugs.


12/9/2022 5:23:50 PM

Large sound

Excellent sound to compliment front speakers, worth the money.


5/20/2022 4:03:23 PM

High marks!

The perfect surround speaker, with fantastic quality. A little larger than I expected for a surround, but the quality is great.


1/22/2022 7:53:44 PM

Solid surround upgrade

I purchased the FX pair to replace the Motion 4 speakers i was using for surround channels. The difference is amazing. Night and day change. The detail and punch from the FX model brought solid surround effects to my home theater.


1/4/2022 12:28:16 AM

Love these Motion FXs!

These speakers are awesome! I have B&W 606s as my back L and R, but after hooking up the MLs as my back L and R surround, my sound bubble is complete! I definitely hear a difference and the clarity is amazing. This year, my wife and I changed out our front stage with MLs and these Motion FX's have really completed the package. I have to admit I've been a B&W fan but MLs have won me over. My front stage are the motion 40Is and and the 50XT center. I'm using an outlaw audio 5K amp paired with the Denon 3600x to power everything. The motions replaced B&W 683s2s and the 50XT replaced the HTM6. I couldn't be happier!


12/22/2021 12:29:18 AM

Ugly and adequet

Ducking one star because these are ugly and the grill cannt be removed. Ducking another star because 1) the connectors are poorly designed and 2) they sound adequete. I bought these to supplement my Motion 60XTis and Motion 50. They sound pretty flat. I ended up returning them and getting Electro Motion FX2s. Those are awesome and sound very rich.


11/2/2021 10:45:30 AM

Martin Logan Motion FX Surround Speakers

Bought these to replace a pair of Definitive Tech BP2X surrounds. I recently purchased a pair of Martin Logan 60xti front channel speakers, and these surrounds complement the 60xti perfectly. The Best Buy web site has an incorrect description for these, so be sure to talk to a Best Buy salesperson.


9/10/2021 3:48:27 PM

Great speaker

Great speakers. Wish the cones were made out of aluminum instead of paper.


6/9/2021 7:13:42 PM

Great rear speakers

Bought these speakers as my rears and they do not dissapoint. They rounded off my surround sound speakers nicely. I would highly recommend this speaker.

Included Items

  • Wall-mount bracket, installation hardware, template
  • Owner's manual
  • MartinLogan Motion FX 5-1/4" 2-Way Bookshelf Speaker (1 speaker)