MartinLogan Motion 15i vs. ELAC ARB51 Navis

MartinLogan Motion 15i Bookshelf Speaker vs. ELAC ARB51 Navis Powered Bookshelf Speakers
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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.

ELAC ARB51 Navis Powered Bookshelf Speakers

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Dimensions (H × W × D)

13.58” × 7.44” × 9.45”
345 mm × 189 mm × 240 mm

Known as the “audiophile's powered speakers,” the ARB51 Navis set utilizes high-end analog amplification in contrast to the lower-cost Class D amps more common in this form factor. These speakers use premium components while maintaining a minimalist footprint.

Comparisons

  • The front face of the ELAC ARB51 Navis is approximately 30.33% larger than that of the MartinLogan Motion 15i.
  • The depth of the MartinLogan Motion 15i is approximately 0.53% deeper than that of the ELAC ARB51 Navis.
  • The spatial volume of the ELAC ARB51 Navis Powered Bookshelf Speakers is approximately 29.65% greater than that of the MartinLogan Motion 15i Bookshelf Speaker.

Notice: the above comparisons are based on the dimensions of a bounding rectangle that would fit the front face of a speaker, or in the case of volume, the measurements are based on a box that would fit the entire speaker. The measurements will not factor in individual differences such as curves or other variations in the speaker shape. Do not use these measurements as an estimate of the internal speaker volume.

More Information

SpeakerSize.com is a website that lets you compare the relative size of bookshelf, tower, and center channel audiophile and home theater speakers. We are continuously adding new speakers based on user feedback. Also, please check out our list of review links below each speaker. If you have a speaker or subwoofer you want to see added here, please let me 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.