Short answer: the Q Acoustics 5050. It ranks #55 of 139 floorstanding speakers by sound quality, rated 4.3/5, at $2,499. The Q Acoustics 5040 ranks #77, rated 4.1/5, at $2,472.98, $26.02 cheaper, which does not close the gap in sound quality.
Why pick the Q Acoustics 5050: Flagship floorstanding tower in the 5000 Series with dual 6.0-inch C3 Continuous Curved Cone woofers, internal HPE tubes, and P2P bracing. Watch for: Rating estimated based on 5000 series sibling testing.
Why pick the Q Acoustics 5040: C3 (Continuous Curved Cone) driver profile technology provides smooth midrange integration, controlled cone breakup, and improved bass damping. The tradeoff: 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 Q Acoustics 5050. It is rated higher for sound quality, and the $26.02 saving on the Q Acoustics 5040 is not enough to make up the difference.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Q Acoustics 5050 | Q Acoustics 5040 | |
|---|---|---|
| Price | $2,499.00 per pair | $2,472.98 per pair |
| Ranked | #55 of 139 in Large Size Floorstanding Speakers | #77 of 139 in Large Size Floorstanding Speakers |
| Drivers | 1.0” (25mm) decoupled tweeter, 2 x 6.0” (150mm) C3 Continuous Curved Cone woofers | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers |
| Frequency Response | 37Hz - 30kHz (-6dB, manufacturer specified) | - |
| Sensitivity | 91.8dB (2.83V/1m, manufacturer specified) | 91.5dB (measured average, Erin’s Audio Corner) |
| Impedance | 6 ohms nominal, 3.0 ohms minimum (manufacturer specified) | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) |
| Bass Extension (-6dB) | 37Hz (manufacturer specified) | - |
| Dimensions | 40”H x 11.5”W x 14.8”D (1017 x 293 x 375 mm) | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) |
| Weight | 47.6 lbs (21.6 kg) each | 39.7 lbs (18.0 kg) each |
| DIY Kit | No | No |
| Bass Extension (-10dB) | - | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | - | 70Hz (measured, Erin’s Audio Corner) |
| Woofer Cabinet | - | ported, rear |
| Spinorama Preference Score | - | 3.80 |
| Spinorama Preference Score with Perfect Sub | - | 6.41 |
Related Speaker Comparisons
How Q Acoustics 5050 compares with other leading options:
- Q Acoustics 5040 vs KEF Q11 Meta
- Polk Audio Reserve R700 vs Q Acoustics 5040
- Q Acoustics 5040 vs PSB Imagine T65
- Ascend Acoustics Sierra Titan Tower vs Q Acoustics 5040
- Q Acoustics 5040 vs KEF R5
Prices on this page were last checked October 5, 2026 at 10:21 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
Q Acoustics 5050: $2,499.00 per pair Estimated Amazon eBay
Smaller models: the Q Acoustics 5040 (ranked lower, rated 4.1/5), the Q Acoustics 5020 (rated 2.2/5) and the Q Acoustics 5010 (estimated 3.5/5).
Pros: Flagship floorstanding tower in the 5000 Series with dual 6.0-inch C3 Continuous Curved Cone woofers, internal HPE tubes, and P2P bracing. Delivers commanding dynamic headroom, reduced cabinet resonance, and bass response reaching 37Hz (-6dB) with minimal distortion.
Cons: Rating estimated based on 5000 series sibling testing. Minimum impedance dips to 3.0 ohms, requiring an amplifier capable of high peak current.
Full Q Acoustics 5050 review and specifications →
| Bass Extension (-6dB) | 37Hz (manufacturer specified) |
|---|---|
| DIY Kit | No |
| Dimensions | 40”H x 11.5”W x 14.8”D (1017 x 293 x 375 mm) |
| Drivers | 1.0” (25mm) decoupled tweeter, 2 x 6.0” (150mm) C3 Continuous Curved Cone woofers |
| Frequency Response | 37Hz - 30kHz (-6dB, manufacturer specified) |
| Impedance | 6 ohms nominal, 3.0 ohms minimum (manufacturer specified) |
| Sensitivity | 91.8dB (2.83V/1m, manufacturer specified) |
| Weight | 47.6 lbs (21.6 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
Q Acoustics 5040: $2,472.98 per pair Amazon eBay
Smaller models: the Q Acoustics 5020 (rated 2.2/5) and the Q Acoustics 5010 (estimated 3.5/5).
Larger model: the Q Acoustics 5050 (ranked higher, estimated 4.3/5).
Pros: C3 (Continuous Curved Cone) driver profile technology provides smooth midrange integration, controlled cone breakup, and improved bass damping. High voltage sensitivity (91.5dB SPL at 2.83V/1m) allows loud listening with low-to-moderate amplifier wattage. Cabinet features Point-to-Point (P2P) internal bracing and Helmholtz Pressure Equalizer (HPE) tubes to suppress internal standing waves and panel vibrations. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 91.5dB.
Cons: 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. Measurements indicate an enclosure resonance near 300Hz visible in sound power data. Minimum impedance drops to 3.0 ohms, demanding a stable 4-ohm rated amplifier despite high sensitivity.
Full Q Acoustics 5040 review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) |
| Drivers | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers |
| Impedance | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) |
| Sensitivity | 91.5dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.80 |
| Spinorama Preference Score with Perfect Sub | 6.41 |
| Weight | 39.7 lbs (18.0 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Q Acoustics 5040 vs Klipsch Forte IV
- Q Acoustics 5040 vs KEF Q11 Meta
- Q Acoustics 5040 vs Klipsch RP-5000F II
- Q Acoustics 5040 vs Klipsch RP-8000F II
- Q Acoustics 5040 vs Dynaudio Emit 30
- Q Acoustics 5040 vs Infinity Primus 360
- Q Acoustics 5040 vs Klipsch RP-6000F II
- Q Acoustics 5040 vs Polk Reserve R500
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