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MartinLogan - Motion 4" 75-Watt Passive 2-Way Bookshelf Speaker (Each) - Gloss Black

Model: MO4IBL
SKU: 5870708
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$219.99
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Specifications
  • Speaker Type
    Bookshelf
    RMS Power
    75 watts
  • Key Specs
    • Speaker Type: Bookshelf
    • RMS Power: 75 watts (The maximum amount of continuous power the device is able to handle.)
  • General
    • Brand: MartinLogan
    • Model Number: MO4IBL
    • Product Name: Motion 4" 75-Watt Passive 2-Way Bookshelf Speaker (Each)
    • Color: Gloss Black
  • Audio
    • Speaker Type: Bookshelf
    • Enclosure Type: Ported
    • RMS Power: 75 watts (The maximum amount of continuous power the device is able to handle.)
    • Peak Power Handling: 150 watts (The maximum amount of power an electronic device, like a speaker, can handle without damage. This refers to short bursts of power, while root mean square (RMS) power handling indicates the amount of continuous power a device can sustain. Higher levels of distortion can also occur at peak power levels when the device is powered beyond its recommended usage.)
    • Impedance: 4 ohms (Describes the resistance of an electric signal throughout the system. Devices with low impedance require less power to deliver optimal signals but are more at risk for damage from overloading. Higher impedance requires more power but is more protected from overload damage.)
    • Minimum Frequency Response: 70 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
    • Maximum Frequency Response: 23 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
    • Sensitivity: 90 decibels
    • Number of Speakers: 1
    • Number of Tweeters: 1
    • Tweeter Size: 1 inches
    • Number of Midranges: 0
    • Number of Drivers: 2
    • Driver Size: 1 inches
    • Number of Woofers: 1
    • Woofer Size: 4 inches
  • Connectivity
    • Speaker Connectivity: Wired
    • Wireless Multi-Room Audio: false (Technology that allows multiple speakers and/or soundbars to be connected wirelessly and play audio in separate rooms.)
    • Audio Only Inputs: 1 x 3.5mm audio
    • Network Connector(s): No network connectors
    • Speaker Wire Connection Type: Binding posts
  • Features
    • App Compatible: false (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
    • Indoor Or Outdoor Use: Indoor (Indicates the appropriate environment product was designed to be used in.)
  • Dimensions
    • Product Height: 12.6 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 5.6 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth: 5.7 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
    • Product Weight: 6 pounds (The out of box weight of the item.)
  • Included
    • Cable(s) Included: None
    • Speaker Wire Included: false
  • Certifications Listings & Approvals
    • ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
  • Warranty
    • Warranty - Parts: 5 years
    • Warranty - Labor: 5 years
  • Other
    • UPC: 810123023097

Listen to quality audio and smooth, refined sound with this MartinLogan Motion bookshelf speaker. The powerful bass technology delivers rich low tones, and the lightning-fast, lightweight tweeter diaphragm ensures clarity and good dynamic range. The flexible installation of this MartinLogan Motion bookshelf speaker gives you tabletop, wall-mounting and upside-down placement options.

Speaker Buying Guide

  • 75W peak power handling: Helps ensure rich, dynamic sound.
  • 4" paper woofer: Along with 1" x 1.4" tweeter for a complete range of sounds.
  • 2-way speaker system: Sounds like 1 source rather than several separate sources.
  • Bass reflex enclosure: With a rear-firing port promotes optimal performance.
  • Bookshelf- or wall-mountable: For optimal placement.
  • 70Hz - 23kHz frequency response: Ensures a wide range of accurately reproduced sound.
  • 90dB sensitivity: Ensures crisp, robust audio.
  • 4 ohms nominal impedance: Ensures efficient conduction of power through the speaker.
Whats Included
  • MartinLogan Motion 4" 75-Watt Passive 2-Way Bookshelf Speaker (Each)
  • Wall mounting brackets

Q: What kind of woofer does this speaker have?

A: This speaker has a 4-inch paper woofer, along with a 1-inch x 1.4-inch tweeter for a complete range of sounds.

Q: Can I mount these speakers on the wall?

A: Yes, these speakers are bookshelf or wall-mountable for optimal placement.

Q: Does this MartinLogan speaker system have a bass reflex enclosure?

A: Yes, it has a bass reflex enclosure with a rear-firing port that promotes optimal performance.

Q: How much peak power can this speaker handle?

A: This speaker has a peak power handling of 75W, which helps ensure a rich and dynamic sound.

Q: What is the frequency response for this MartinLogan speaker?

A: The frequency response is 70Hz - 23kHz, ensuring a wide range of accurately reproduced sound.

Q: Is there anyway to order new mounting brackets for these?

A: Support at Martin Logan's website.

Q: Could this speaker be used with a receiver and turntable?

A: Yes, that's how I use mine. It's a fantastic entry-level "audiophile" speaker, but keep in mind the bass is limited because it's so small. I use a subwoofer as well.

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Pros for MartinLogan - Motion 4" 75-Watt Passive 2-Way Bookshelf Speaker (Each) - Gloss Black
Sound Quality, Size, Appearance, Volume, Wall MountSound Quality, SizeSound Quality, Size, DesignSound Quality, Size, Appearance, Bass, Price
Cons for MartinLogan - Motion 4" 75-Watt Passive 2-Way Bookshelf Speaker (Each) - Gloss Black
BassThere were no cons for this productThere were no cons for this productThere were no cons for this product

Specs

Reviews

Customers are sayingCustomers frequently mention the excellent sound quality and compact size of the Motion 4" 75-Watt Passive 2-Way Bookshelf Speaker. Many customers find the speakers aesthetically pleasing and appreciate the clean, sturdy wall mounts. The speaker is suitable for medium volume listening, and the mids and lows are great. However, some customers noted that the bass may not be ideal for music genres with explosive bass energy.
This summary was generated by AI based on customer reviews.
  • Sound Quality (91)
  • Size (7)
  • Appearance (4)
  • Volume (4)
  • Wall Mount (4)
  • Bass (7)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

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