Short answer: the MartinLogan Motion B10 for better sound quality, the Q Acoustics 3010c for the lower price. The MartinLogan Motion B10 ranks #60 of 168 bookshelf speakers, rated 3.6/5, at $1,039.98. The Q Acoustics 3010c ranks #76, rated 3.4/5, at $479, $560.98 cheaper.
What the MartinLogan Motion B10 does well: MartinLogan’s folded-motion tweeter technology (a 9.2 sq in diaphragm, larger than a typical dome) reaches this price point, with an excellent sound-power smoothness score of 0.111, meaning its off-axis output tracks its on-axis response unusually well. The catch: On-axis deviation of 0.669dB is rough for the price, with a pronounced +0.32dB per octave upward tilt giving it a notably bright balance, and predicted in-room smoothness of just 0.16, the roughest of any speaker measured here.
What the Q Acoustics 3010c does well: Ultra-compact bookshelf speaker utilizing the C3 Continuous Curved Cone 4-inch mid/bass driver and a hermetically sealed 0.9-inch decoupled high-frequency unit. The tradeoff: Rating estimated based on 3000c series sibling testing.
Buy the MartinLogan Motion B10 if sound quality matters more than the price. Buy the Q Acoustics 3010c if the price matters more than sound quality.
Worth knowing: the Q Acoustics 3010c has not been measured yet. Its rating is estimated from related models, with a likely range of 3.2 to 3.6, so treat this verdict as provisional.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| MartinLogan Motion B10 | Q Acoustics 3010c | |
|---|---|---|
| Price | $1,039.98 per pair | $479.00 per pair |
| Ranked | #60 of 168 in Medium Size Bookshelf Speakers | #76 of 168 in Medium Size Bookshelf Speakers Estimated |
| Enclosure | Rear-ported, 2-way | - |
| Drivers | 1” x 1.4” Gen2 Obsidian Folded Motion tweeter, 5.5” woven fiberglass midrange | 0.9” (22mm) decoupled tweeter, 4.0” (100mm) C3 Continuous Curved Cone mid/bass |
| Dimensions | 12.5H x 7W x 9.75D in | 10”H x 6.1”W x 9”D (254 x 155 x 228 mm) |
| Weight | 14.6 lbs (6.6 kg) each | 9 lbs (4.1 kg) each |
| Sensitivity | 92dB | 85.0dB (2.83V/1m, manufacturer specified) |
| Impedance | 5 ohms nominal | 6 ohms nominal, 4.0 ohms minimum (manufacturer specified) |
| Country | United States (design) | - |
| Spinorama Preference Score | 4.01 | - |
| Spinorama Preference Score with Perfect Sub | 6.76 | - |
| Bass Extension (-3dB) | 74.7Hz (measured, Erin’s Audio Corner via spinorama.org) | - |
| Bass Extension (-10dB) | 56.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | - |
| DIY Kit | No | No |
| Frequency Response | - | 65Hz - 30kHz (-6dB, manufacturer specified) |
| Bass Extension (-6dB) | - | 65Hz (manufacturer specified) |
Related Speaker Comparisons
How MartinLogan Motion B10 compares with other leading options:
- KEF LS50 Meta vs MartinLogan Motion B10
- KEF Q150 vs MartinLogan Motion B10
- KEF Q1 Meta vs MartinLogan Motion B10
- KEF Q4 Meta vs Q Acoustics 3010c
- MartinLogan Motion B10 vs MartinLogan Motion XT B100
Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Speakers In Full
MartinLogan Motion B10: $1,039.98 per pair Crutchfield eBay
Same family: the MartinLogan Motion F10 (smaller floorstanding, estimated 3.8/5), the MartinLogan Motion F20 (larger floorstanding, estimated 3.9/5), the MartinLogan Motion C10 (center, estimated 3.7/5) and the MartinLogan Motion MP10 (surround, estimated 3.5/5).
Pros: MartinLogan’s folded-motion tweeter technology (a 9.2 sq in diaphragm, larger than a typical dome) reaches this price point, with an excellent sound-power smoothness score of 0.111, meaning its off-axis output tracks its on-axis response unusually well. Sensitivity of 92dB makes it easy to drive. Measured bass extension of 74.7Hz (-3dB).
Cons: On-axis deviation of 0.669dB is rough for the price, with a pronounced +0.32dB per octave upward tilt giving it a notably bright balance, and predicted in-room smoothness of just 0.16, the roughest of any speaker measured here. Bass extension is shallow too, a Harman in-room estimate of just 62Hz.
Full MartinLogan Motion B10 review and specifications →
| Released | Feb 2023 (3 years ago) |
|---|---|
| Bass Extension (-10dB) | 56.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 74.7Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Country | United States (design) |
| DIY Kit | No |
| Dimensions | 12.5H x 7W x 9.75D in |
| Drivers | 1” x 1.4” Gen2 Obsidian Folded Motion tweeter, 5.5” woven fiberglass midrange |
| Enclosure | Rear-ported, 2-way |
| Impedance | 5 ohms nominal |
| Sensitivity | 92dB |
| Spinorama Preference Score | 4.01 |
| Spinorama Preference Score with Perfect Sub | 6.76 |
| Weight | 14.6 lbs (6.6 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Q Acoustics 3010c: $479.00 per pair Estimated Amazon eBay
Same family: the Q Acoustics 3020c (larger bookshelf, ranked lower, estimated 2.6/5), the Q Acoustics 3030c (larger bookshelf, ranked higher, estimated 3.8/5), the Q Acoustics 3050c (floorstanding, estimated 4.2/5) and the Q Acoustics 3090c (center, estimated 3.5/5). See every Q Acoustics 3000 Series generation.
Pros: Ultra-compact bookshelf speaker utilizing the C3 Continuous Curved Cone 4-inch mid/bass driver and a hermetically sealed 0.9-inch decoupled high-frequency unit. Offers smooth midrange linearity, wide dispersion, and Point-2-Point internal cabinet bracing.
Cons: Rating estimated based on 3000c series sibling testing. Compact 4-inch driver limits low bass below 65Hz (-3dB); requires pairing with a subwoofer for full-range musical reproduction.
Full Q Acoustics 3010c review and specifications →
| Released | Oct 2025 (1 year ago) |
|---|---|
| Bass Extension (-6dB) | 65Hz (manufacturer specified) |
| DIY Kit | No |
| Dimensions | 10”H x 6.1”W x 9”D (254 x 155 x 228 mm) |
| Drivers | 0.9” (22mm) decoupled tweeter, 4.0” (100mm) C3 Continuous Curved Cone mid/bass |
| Frequency Response | 65Hz - 30kHz (-6dB, manufacturer specified) |
| Impedance | 6 ohms nominal, 4.0 ohms minimum (manufacturer specified) |
| Sensitivity | 85.0dB (2.83V/1m, manufacturer specified) |
| Weight | 9 lbs (4.1 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons