These are not really the same size class, and that is the honest framing here. The Q Acoustics 5040 ranks #50 of 89 floorstanding speakers by sound quality at $2,472.98; the Q Acoustics 5020 ranks #84 of 101 bookshelf speakers by sound quality at $1,199.
The Q Acoustics 5040 is the deeper-bass pick. C3 (Continuous Curved Cone) driver profile technology provides smooth midrange integration, controlled cone breakup, and improved bass damping. Its bass reaches about 70Hz before falling 3dB, against 103Hz for the Q Acoustics 5020. Watch for: 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.
Why pick the Q Acoustics 5020: Attractively finished compact standmount with a 5-inch Continuous Curved Cone woofer and carefully engineered cabinet details. The catch: Erin found the tonal balance distinctly too crisp, forward and treble-heavy: the top end is roughly 3-5dB elevated while the 1-3kHz region is recessed, so vocals change level unnaturally as they move through their range.
Buy the Q Acoustics 5040 at $2,472.98 if you want a floorstanding speaker. Buy the Q Acoustics 5020 at $1,199 if you want a bookshelf speaker instead.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Q Acoustics 5040 | Q Acoustics 5020 | |
|---|---|---|
| Price | $2,472.98 per pair | $1,199.00 per pair |
| Ranked | #50 of 89 in Large Size Floorstanding Speakers | #84 of 101 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 48Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) | 103Hz (measured, Erin’s Audio Corner) |
| Dimensions | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) | 11.2”H x 7.1”W x 11.5”D |
| Impedance | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) | 6 ohms nominal, 3.3 ohms minimum (manufacturer specified) |
| Sensitivity | 91.5dB (measured average, Erin’s Audio Corner) | 87.1dB (2.83V/1m, measured, Erin’s Audio Corner; 87.9dB manufacturer specified) |
| Drivers | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers | 5” (125mm) C3 mid/bass driver, 1” (25mm) tweeter |
| Weight | 39.7 lbs (18.0 kg) each | 15.4 lbs (7.0 kg) each |
| Woofer Cabinet | ported, rear | rear-ported |
| Spinorama Preference Score | 3.80 | 3.63 |
| Spinorama Preference Score with Perfect Sub | 6.41 | 6.55 |
| DIY Kit | No | No |
| Crossover Frequency | - | 2.5kHz (manufacturer specified) |
| Frequency Response | - | 53Hz - 30kHz (-6dB, manufacturer specified) |
| Recommended Power | - | 25W - 100W (manufacturer specified) |
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How Q Acoustics 5040 compares with other leading options:
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Prices on this page were last checked October 4, 2026 at 9:58 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 5040: $2,472.98 per pair Amazon eBay
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 |
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Q Acoustics 5020: $1,199.00 per pair Amazon eBay
Pros: Attractively finished compact standmount with a 5-inch Continuous Curved Cone woofer and carefully engineered cabinet details. Erin found distortion well controlled at normal levels: below 1% down to about 50Hz at 86dB/1m. Its 87dB measured sensitivity is unremarkable rather than hard to drive, and it maintains acceptable output for typical 80-85dB listening. The rear port can be plugged for placement flexibility. Measured bass extension of 103Hz (-3dB), with a measured sensitivity of 87.1dB.
Cons: Erin found the tonal balance distinctly too crisp, forward and treble-heavy: the top end is roughly 3-5dB elevated while the 1-3kHz region is recessed, so vocals change level unnaturally as they move through their range. The shallow woofer crossover and steeper tweeter slope contribute to the off-axis discontinuity, while the port has a strong 1kHz resonance. Bass is limited: Erin measured F3 103Hz and F10 48Hz; at 96dB distortion reaches about 3% by 100Hz, and he bottomed the woofer when pushed hard. He preferred the less-expensive 3020i’s linearity and did not recommend the 5020 for neutral listening without EQ.
Full Q Acoustics 5020 review and specifications →
| Bass Extension (-10dB) | 48Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 103Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 2.5kHz (manufacturer specified) |
| DIY Kit | No |
| Dimensions | 11.2”H x 7.1”W x 11.5”D |
| Drivers | 5” (125mm) C3 mid/bass driver, 1” (25mm) tweeter |
| Frequency Response | 53Hz - 30kHz (-6dB, manufacturer specified) |
| Impedance | 6 ohms nominal, 3.3 ohms minimum (manufacturer specified) |
| Recommended Power | 25W - 100W (manufacturer specified) |
| Sensitivity | 87.1dB (2.83V/1m, measured, Erin’s Audio Corner; 87.9dB manufacturer specified) |
| Spinorama Preference Score | 3.63 |
| Spinorama Preference Score with Perfect Sub | 6.55 |
| Weight | 15.4 lbs (7.0 kg) each |
| Woofer Cabinet | rear-ported |
- Links
- Reviews, Comparisons and Sound Samples
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