MartinLogan Motion Foundation F1 Floorstanding Speaker - Satin White - Each

MartinLogan's Most Compact Floorstanding Tower

The MartinLogan Motion Foundation F1 is a 3-way floorstanding speaker with a Gen2 Obsidian Folded Motion tweeter over a 5.5-inch aluminum midrange and three 5.5-inch aluminum woofers, all in a rear-ported cabinet sized for smaller rooms.

MartinLogan rates sensitivity at 92 dB into a nominal 4 ohms, and recommends 15 to 200 watts of amplifier power — an easy speaker to drive well with a quality integrated amplifier, without needing separates or a high-current amp to sound its best.

The cabinet is available in Black, Walnut, or Satin White, and sold each, so a stereo pair is two — order one to match an existing speaker, or a matching pair to start a system from scratch.

Where the Compact Cabinet Earns Its Keep

A Full Folded Motion Tweeter in a Small Cabinet

The Gen2 Obsidian Folded Motion tweeter, MartinLogan's signature thin-film design, crosses over at 3,700 Hz to a 5.5-inch aluminum midrange that handles vocals and instruments in its own chamber.

Three 5.5-inch aluminum woofers, crossing over at 240 Hz, share the bass load below the midrange — MartinLogan's way of fitting real floorstanding bass into a cabinet just over 41 inches tall.

The Numbers, and What They Ask of Your Amplifier

MartinLogan quotes a frequency range of 41 Hz to 23 kHz within 3 dB. Sensitivity is 92 dB, nominal impedance is 4 ohms, and MartinLogan recommends 15 to 200 watts of amplifier power.

A single pair of 5-way binding posts accepts banana plugs, spades, or bare wire, wired straight through to each driver without a separate bi-wire path. A rear-firing port completes the cabinet, so leave a few inches of clearance behind it.

What Reviewers Are Saying

Ketan Bharadia, What Hi-Fi?, rated the Motion Foundation F1 4 out of 5 for sound, build, and compatibility, writing that it produces "a strong bass with good extension" while prioritizing "articulation and control."

His one reservation: a slightly clinical character next to some class rivals — a fair trade, in his view, for a speaker that stays "pleasingly even... with no part of the frequency range gaining undue prominence."

Who Is This Floorstanding Speaker Best For?

• You want MartinLogan's Folded Motion tweeter in the most compact tower they build — the same thin-film design used across the pricier Motion line
• You have a smaller room to fill — at just over 41 inches tall, the F1 fits where a larger tower wouldn't
• Your amplifier is modest — 92 dB sensitivity and a 15 to 200 watt window mean a quality integrated amplifier is all it needs
• You want one speaker per cabinet, priced and shipped that way — the F1 is sold each, so order two for a stereo pair
• You want real floorstanding bass without stepping up in size — the F1 reaches to 41 Hz within 3 dB on its own. For the deepest home-theater effects, add one of our subwoofers and let the towers do what they do best

How Does It Connect to Your System?

Leave a few inches of clearance behind the cabinet for its rear port to breathe. Each cabinet has a single pair of 5-way binding posts for banana plugs, spades, or bare wire.

Give the drivers time to settle; aluminum cones can take some hours of playback before they loosen up fully.

Two cables, two speakers, and you are listening.

Pairs Well With

What finishes the system around a pair of Motion Foundation F1 towers:

• Integrated amplifiers — 15 to 200 watts into 4 ohms is the window MartinLogan gives
• Stereo amplifiers — a separate power amp if you want more headroom
• Speaker cables — single-wire runs, since this model has no bi-wire terminal
• Speaker isolation feet — a firm footing on a wood or tile floor

Frequently Asked Questions

Is the price for one speaker or a pair?

One. The F1 is sold each, so order two for a stereo pair, or one to match an existing speaker.

What comes in the box?

The speaker with its magnetic grille attached, and the owner's manual.

What amplifier do I need?

MartinLogan recommends 15 to 200 watts into 4 ohms. At 92 dB sensitivity, a quality integrated amplifier is enough to drive it well.

Can I bi-wire the F1?

Each cabinet has a single pair of 5-way binding posts; MartinLogan does not offer a bi-wire terminal on this model.

What's the difference between the F1 and the F2?

The F2 steps up to three 6.5-inch woofers instead of 5.5-inch, in a taller cabinet with deeper bass extension, at a higher price.

What finishes are available?

Black, Walnut, and Satin White.

See It in Action

Shane Lee reviews the Motion Foundation line, including the F1:

Home Cinema King compares the F1 and F2 side by side:

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Learn More

Want to learn more about speaker placement, bi-wiring, or matching an amplifier to your speakers? Visit our Learning Center for guides, tips, and expert advice.