Short answer: the MoFi SourcePoint 888. It ranks #8 of 228 floorstanding speakers by sound quality, rated 4.7/5, at $5,495. The Q Acoustics 5040 ranks #113, rated 4.1/5, at $3,998, $1,497 cheaper, which does not close the gap in sound quality.
The MoFi SourcePoint 888 is the more accurate, deeper-bass pick. Excellent floorstanding speakers for the money, with near full range bass and effortless dynamics. Its measured preference score, a predictor of how neutral it sounds, is 6.09 against 3.80 for the Q Acoustics 5040. Its bass reaches about 34Hz before falling 3dB, against 70Hz for the Q Acoustics 5040. The catch: A significant investment, best ordered from a dealer with a good return policy.
What the Q Acoustics 5040 does well: Well-built floorstanding speakers that are easy to drive, playing loud on modest amplifiers with a smooth, well-integrated midrange. The catch: Free-field frequency response exhibits a noticeable mid-bass scoop around 200Hz (~6dB lower than mean SPL), causing an F3 of 70Hz (F10 of 39Hz) in open space and requiring boundary placement (11-22 inches from front wall) to reinforce upper bass output.
Buy the MoFi SourcePoint 888. It is rated higher for sound quality, and the $1,497 you would save on the Q Acoustics 5040 does not close the gap.
Looking for alternatives? See the complete Passive Home rankings.
Excellent floorstanding speakers for the money, with near full range bass and effortless dynamics.
Well-built floorstanding speakers that are easy to drive, playing loud on modest amplifiers with a smooth, well-integrated midrange.
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Specifications Side By Side
| MoFi SourcePoint 888 | Q Acoustics 5040 | |
|---|---|---|
| Price | $5495 per pair | $3,998 per pair |
| Ranked | #8 of 228 in Large Size Floorstanding Speakers | #113 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 26Hz (measured, Erin’s Audio Corner) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 34Hz (measured, Erin’s Audio Corner) | 70Hz (measured, Erin’s Audio Corner) |
| Dimensions | 41.2”H x 12.6”W x 16.1”D (1046.5 x 320 x 408.9 mm) | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) |
| Impedance | 6 ohms nominal, 5 ohms minimum (measured, Erin’s Audio Corner) | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) |
| Drivers | Dual 8” paper cone woofers, 8” Paper Cone midrange, 1.25” wide roll soft dome tweeter | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers |
| Sensitivity | 85.6dB (measured, Erin’s Audio Corner) | 91.5dB (measured average, Erin’s Audio Corner) |
| Weight | 94.8 lbs (43 kg) each | 39.7 lbs (18.0 kg) each |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 6.09 | 3.80 |
| Spinorama Preference Score with Perfect Sub | 7.21 | 6.41 |
| DIY Kit | No | No |
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