MartinLogan Motion 2i vs. Polk Signature Elite ES15

MartinLogan Motion 2i Bookshelf Speakers Polk Audio Signature Elite ES15 Bookshelf Speakers
$200 $300
Dimensions (H × W × D)
10.00” × 4.70” × 4.60”
254mm × 119mm × 117mm
12.00” × 7.50” × 10.20”
305mm × 190mm × 259mm
Power Type
Passive Passive
Frequency Response
110-23,000 Hz 48-40,000 Hz

Key Takeaways

TLDR Summary: In the realm of lush soundscapes, the MartinLogan Motion 2i and Polk Audio Signature Elite ES15 bookshelf speakers offer distinct sonic signatures. The Motion 2i stands out with its Folded Motion tweeter, delivering crisp, articulate highs and a broad soundstage. Meanwhile, the ES15 brings Polk's robust Dynamic Balance drivers into play, ensuring a warm, rich midrange with precise bass extension. The Motion 2i caters to those seeking detail and airiness, whereas the ES15 appeals to listeners desiring full-bodied warmth and punch. Both exceptional in their class, the choice between these speakers ultimately hinges on personal aural predilections.

Speaker Comparison

When it comes to bookshelf speakers, the market is brimming with options that cater to audiophiles and casual listeners alike. Two such contenders in this space are the MartinLogan Motion 2i and Polk Audio Signature Elite ES15 bookshelf speakers. Each of these speakers comes from a brand with a storied history in audio excellence, promising a compelling listening experience. But how do they stack up against each other? It's a classic matchup of innovation versus tradition, high-end refinement against robust versatility.

Design Aesthetics and Build Quality

The MartinLogan Motion 2i speakers exude a sleek, modern design, with their distinct folded motion tweeters and compact, decor-friendly size. This design not only contributes to their aesthetic appeal but also to their unique sound characteristics. The build quality is impressive, with a solid construction that feels premium to the touch. On the other hand, Polk Audio Signature Elite ES15 speakers boast a traditional look that's characteristic of Polk's Signature series. They feature a larger footprint than the Motion 2i, yet their well-crafted MDF cabinets and beautiful finish give them a timeless charm. Both models are skillfully constructed, but MartinLogan takes the lead in the high-tech design department.

MartinLogan Motion 2i Bookshelf Speakers
MartinLogan Motion 2i arrow (at

Sound Signature and Performance

The MartinLogan Motion 2i makes an immediate impression with its folded motion tweeter technology, which delivers an incredibly fast and precise response. This results in a crisp, detailed high-end that audiophiles will appreciate. The bass response, while not earth-shattering, is tight and accurate, suitable for compact bookshelf speakers. In contrast, the Polk Audio Signature Elite ES15 brings warmth and fullness to the sound with its Dynamic Balance acoustic array. The bass is more pronounced without overpowering the mids and highs, which remain clear and vibrant. It's a speaker that's friendly to various music genres and can handle the dynamism of movies too.

Compatibility and Versatility

MartinLogan's Motion 2i, with its sophisticated engineering, pairs well with high-quality amplifiers and preamps that can take advantage of its auditory precision. They're ideal for smaller rooms where their intimate soundstage can be fully appreciated. Conversely, the Polk ES15 is a bit more forgiving and versatile. It's designed to perform exceptionally across a wide range of amplifiers, from entry-level to high-end units. The Polk speakers are also more accommodating to larger spaces, thanks to their power and a more expansive soundstage.

When analyzing the frequency response, the MartinLogan Motion 2i shows its prowess in the high-frequency domain. Its tweeters ensure that the details in the music are presented with utmost clarity, making it a favorite for listeners who crave sonic accuracy. The midrange is also well rendered, facilitating a natural vocal reproduction. The Polk ES15, with its well-rounded sound profile, provides a satisfying low-end that doesn't compromise the details. Its performance is consistently good across the frequency spectrum, offering a more balanced listening experience.

Connectivity is another area where both speakers shine, albeit in their own ways. The MartinLogan Motion 2i provides high-quality, sturdy binding posts that ensure a secure connection with speaker cables. The Polk ES15 also features reliable binding posts, with the added advantage of supporting bi-wiring or bi-amping, which can be a boon for users looking to customize their sound setup further.

In conclusion, the choice between the MartinLogan Motion 2i and Polk Audio Signature Elite ES15 bookshelf speakers will largely depend on the listener's preferences and room characteristics. The MartinLogan offers a more intimate and detailed sonic experience, perfect for the detail-oriented listener, while the Polk provides a more versatile and room-filling sound that is great for all-around use. Whichever you choose, both speakers are a testament to their manufacturers' commitment to audio excellence and consumer satisfaction.

Check Current Prices:

MartinLogan Motion 2i Bookshelf Speakers
MartinLogan Motion 2i Bookshelf Speakers
Polk Audio Signature Elite ES15 Bookshelf Speakers
Polk Audio Signature Elite ES15 Bookshelf Speakers

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Disclaimer: the speaker data listed on this website are correct to the best of our knowledge, but we do not guarantee the accuracy of the data. Please double-check any measurements with the manufacturer before making a final purchasing decision.