MartinLogan Motion 20i vs. Polk Audio TSi200

MartinLogan Motion 20i Tower Speaker Polk Audio TSi200 Bookshelf Speakers
$2000 $300
Dimensions (H × W × D)
36.60” × 6.80” × 11.70”
930mm × 173mm × 297mm
15.44” × 8.00” × 11.75”
392mm × 203mm × 298mm
Power Type
Passive Passive
Frequency Response
46-25,000 Hz 50-24,000 Hz

Key Takeaways

TLDR Summary: In the battle of finesse versus muscle, the MartinLogan Motion 20i tower speakers present an elegant, detail-rich performance thanks to their Folded Motion tweeters, delivering a crisp high-end. Their slender form factor belies a robust soundstage that fills the room with a warm and precise audio experience. Meanwhile, the Polk Audio TSi200 bookshelf speakers offer surprising power and depth for their size, with dynamic balance drivers ensuring a punchy midrange suited for smaller spaces. Though these Polks can't match the MartinLogan's airy highs, they compensate with a solid, more affordable entry point into high-quality audio.

Speaker Comparison

The world of high-fidelity audio often presents us with the delightful dilemma of choosing between towering floor-standers and modest yet mighty bookshelves. In this exploration, we pit the MartinLogan Motion 20i, a floor-standing speaker known for its electrostatic lineage, against the Polk Audio TSi200, a compact bookshelf contender that promises to punch above its weight. Both offer unique approaches to sound reproduction and cater to different listening preferences and environmental constraints.

Design and Build Quality

The MartinLogan Motion 20i speakers exude a sleek and modern aesthetic, with a slim profile that reflects their sophisticated engineering. The Motion 20i stands tall with an air of confidence, boasting a high-gloss finish and the distinctive MartinLogan perforated steel grille. In contrast, the Polk Audio TSi200 opts for a more traditional look, with a wood grain finish and a less imposing stature. Although smaller, the TSi200 is solidly built and will blend more seamlessly into a bookshelf or a modestly sized room.

MartinLogan Motion 20i Tower Speaker
MartinLogan Motion 20i arrow (at

Soundstage and Imaging

When it comes to soundstage and imaging, the Motion 20i towers take full advantage of their larger size and dedicated drivers to create an expansive and enveloping experience. The Motion 20i delivers a holographic sound that is both precise and three-dimensional, effortlessly filling the room with music. On the other hand, the Polk Audio TSi200, although smaller, surprises with its ability to project a wide and convincing soundstage. While it may not achieve the same level of spaciousness as its towering rival, it offers remarkable imaging and placement for its class, making it a worthy competitor in this regard.

Performance Across Frequencies

If deep, room-shaking bass is what you crave, the MartinLogan Motion 20i brings it in spades. The towers' dual woofers work in tandem to produce low-end frequencies that are rich and well-defined. Midrange is equally impressive, with clear and natural vocals that exhibit the brand's signature sound. The Motion 20i's Folded Motion tweeter provides crisp and extended highs without any hint of harshness. Meanwhile, the Polk Audio TSi200, with its smaller drivers and cabinet, manages to deliver respectable bass that is tight and punchy, albeit with less depth than the Motion 20i. The TSi200's midrange is warm and inviting, while its silk dome tweeters offer a smooth treble response that complements a variety of music genres.

Polk Audio TSi200 Bookshelf Speakers
Polk Audio TSi200 arrow (at

Beneath the surface, the MartinLogan Motion 20i is characterized by its advanced engineering, including the use of aluminum cone drivers and the Folded Motion tweeter, a technology inspired by the brand's electrostatic speakers. This translates into a high level of detail retrieval and a rapid transient response. Polk Audio's TSi200 employs Dynamic Balance technology in its drivers aimed at minimizing resonance and distortion. The resulting sound is balanced and coherent, with a well-tuned blend of clarity and warmth.

Despite the clear differences in driver configuration and cabinet volume, both the MartinLogan Motion 20i and Polk Audio TSi200 are quite efficient and easy to drive. This makes them compatible with a broad range of amplifiers and receivers. However, the Motion 20i's 4-ohm impedance may demand a bit more from an amplifier than the TSi200's 8-ohm load, potentially influencing a user's choice depending on the existing audio setup.

In conclusion, choosing between the MartinLogan Motion 20i and the Polk Audio TSi200 is a matter of preference and practicality. The Motion 20i is ideal for the audiophile craving a full-range floor-standing speaker that makes a statement both visually and sonically. The TSi200, on the other hand, is perfect for those seeking a high-quality bookshelf speaker that offers great performance in a smaller package. Each speaker shines in its respective domain, ensuring that listeners will be rewarded with an engaging and enjoyable audio experience regardless of their choice.

Check Current Prices:

MartinLogan Motion 20i Tower Speaker
MartinLogan Motion 20i Tower Speaker
Polk Audio TSi200 Bookshelf Speakers
Polk Audio TSi200 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.