The Micca MB42X Mark III ranks #89 out of 160 total Medium Size Bookshelf Speakers for sound quality. See all Passive Home rankings for every top pick.
Brand: Micca
Prices on this page were last checked October 7, 2026 at 9:25 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#89 Micca MB42X Mark III: $99.99 per pair Amazon eBay
Newer model: the Micca MB42X G2, ranked higher, rated 3.6/5.
Pros: A very inexpensive, compact 4-inch passive pair with a real crossover and removable grilles. Erin’s data predicts a respectable 6.27 preference score when crossed to a subwoofer, low 0.099 on-axis roughness and broad horizontal coverage. Measured bass extension of 101.6Hz (-3dB).
Cons: Bass extension is limited to about 81Hz in-room and the response rises steeply at +0.81dB per octave, so it can sound bright without EQ. The measurement’s provenance is not fully documented, sensitivity is low, and output is limited by the small woofer.
| Bass Extension (-10dB) | 61.7Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
|---|---|
| Bass Extension (-3dB) | 101.6Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Country | United States (design) |
| DIY Kit | No |
| Dimensions | 9.5H x 5.8W x 6.5D in |
| Drivers | 0.75” silk-dome tweeter, 4” carbon-fiber woofer |
| Enclosure | 2-way, rear-ported |
| Impedance | 4-8 ohms |
| Sensitivity | 85dB |
| Spinorama Preference Score | 3.04 |
| Spinorama Preference Score with Perfect Sub | 6.27 |
| Weight | approx. 4 lbs (1.8 kg) each |
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