when you buy Sonos products. Plus free shipping.

See the offer ›

MartinLogan - Motion SLM 4" Flat-Panel Speaker (Each) - Gloss Black

This MartinLogan Motion SLM flat-panel speaker features dual 4" fiber-cone woofers, dual 4" high-velocity passive bass radiators and a Folded Motion tweeter to deliver a stunning soundscape. The sleek profile blends seamlessly with your living space.

Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

Free Shipping on Orders $35 and Up

No minimum for My Best Buy® Elite and Elite Plus members. Minimum purchase of $35 on eligible products required. Excludes select digital items, scheduled delivery items and items displaying "In Store Only" message.Learn more

Build a Bundle

    What's Included

    • Owner's manual
    • MartinLogan Motion SLM 4" Flat-Panel Speaker (1 Speaker)
    • Mounting brackets

    Ratings & Reviews

    Overall Customer Rating:
    100% of customers would recommend this product to a friend (4 out of 4)

    (4 Reviews)
    (0 Reviews)
    (0 Reviews)
    (0 Reviews)
    (0 Reviews)

    Product Features

    From our expanded online assortment; not available in all Best Buy stores

    Dual 4" ultraslim woofers

    Deliver powerful sound. Dual 4" high-velocity passive bass radiators offer controlled low-end bass extension.

    1" x 1-3/8" Folded Motion tweeter

    Features an 80° x 80° dispersion pattern, so the speaker provides the same impressive soundscape when placed horizontally or vertically.

    Push-style binding post inputs

    Offer simple, secure connections.

    Ultraslim profile

    Beautifully complements your ultrathin TV.

    Solid, black-anodized brushed-aluminum baffle

    Holds the drivers securely in place discreetly under the grille for a sleek look.

    Magnetic grille

    Features an adjustable logo that can move and rotate depending on speaker orientation.

    Curved black glass base

    Allows easy setup on a shelf or cabinet. Brackets included for easy freestanding or wall-mount installations.

    110Hz - 22kHz frequency response

    Ensures faithful sound reproduction.

    94dB sensitivity

    For powerful sound.

    4 ohms impedance

    Conducts power through the speaker. Compatible with 4-, 6- and 8-ohm-rated amplifiers.

    Product images, including color, may differ from actual product appearance.