MartinLogan Motion 15i vs. MartinLogan Motion 20i

MartinLogan Motion 15i Bookshelf Speaker vs. MartinLogan Motion 20i Tower Speaker
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MartinLogan Motion 15i Bookshelf Speaker

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Dimensions (H × W × D)

11.40” × 6.80” × 9.50”
290 mm × 173 mm × 241 mm

A midsized rear-ported bookshelf, featuring a 5.25” low-frequency transducer and a folded motion high frequency transducer, which MartinLogan claims replicates much of the performance of their high-end elecrostatic speakers. May need to be paired with a subwoofer if sub-60Hz bass is a priority.

MartinLogan Motion 20i Tower Speaker

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Dimensions (H × W × D)

36.60” × 6.80” × 11.70”
930 mm × 173 mm × 297 mm

This is the smallest floorstanding model in MartinLogan's Motion i lineup. In addition to the folded tweeter, these speakers use two 5.5” drivers, one handling midrange-bass frequencies, and the lower one dedicated to bass alone. Wide, detailed soundstage, but probably best paired with a subwoofer for home theater use.

Comparisons

  • The front face of the MartinLogan Motion 20i is approximately 221.05% larger than that of the MartinLogan Motion 15i.
  • The depth of the MartinLogan Motion 20i is approximately 23.16% deeper than that of the MartinLogan Motion 15i.
  • The spatial volume of the MartinLogan Motion 20i Tower Speaker is approximately 295.40% greater than that of the MartinLogan Motion 15i Bookshelf Speaker.

Please Note: the above comparisons are based on the dimensions of a bounding rectangle that would fit the front face of a speaker. In the case of volume, the comparisons are based on a bounding box that would enclose the speaker entirely. These measurements do not take into account variations in the speaker shape, such as curves, diagonal edges, or cutaways. These measurements cannot be relied upon to measure the internal volume of the speaker.

More Information

Our website will allow you to compare the sizes of bookshelf, satellite, tower, and center channel speakers and subwoofers for audiophile and home theater usage. We will keep adding new speakers in response to user feedback. For your convenience, we have also put together a list of links to speaker review sites and more information for each model. If you know of a speaker you would like to see featured on SpeakerSize.com, let us know.

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Disclaimer: the speaker sizes 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 dimensions with the manufacturer before making a final purchasing decision.