Short answer: the Q Acoustics 5040 on measured sound quality, the Polk T50 on price. The Q Acoustics 5040 ranks #97 of 188 floorstanding speakers, rated 4.1/5, at $4,014.96. The Polk T50 ranks #126, rated 3.8/5, at $498, $3,516.96 cheaper.
The Polk T50 is the deeper-bass pick. Pretty deep bass for the price. Its bass reaches about 47Hz before falling 3dB, against 70Hz for the Q Acoustics 5040. Watch for: 5dB peak at 1kHz, 4dB bright top end from 11kHz on up.
What the Q Acoustics 5040 does well: 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 Polk T50 if the price is the priority over sound quality, or the Q Acoustics 5040 if sound quality is the priority over the price.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Polk T50 | Q Acoustics 5040 | |
|---|---|---|
| Price | $498 per pair | $4,014.96 per pair |
| Ranked | #126 of 188 in Large Size Floorstanding Speakers | #97 of 188 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) | 70Hz (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal (4.2 ohms minimum, measured by Audio Science Review) | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) |
| Drivers | 2x 6.5” bi-laminate paper cone woofers, 1x 1” Terylene dome tweeter + 2x 8” passive bass radiators | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers |
| Weight | 75.4 lbs (34.2 kg) | 39.7 lbs (18.0 kg) each |
| Sensitivity | 86.3dB (2.83V/1m, measured by Audio Science Review) | 91.5dB (measured average, Erin’s Audio Corner) |
| Dimensions | 40.4”H x 9.3”W x 12.5”D (1026.2 x 235.0 x 317.5 mm) | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) |
| Woofer Cabinet | passive radiator | ported, rear |
| Spinorama Preference Score | 4.14 | 3.80 |
| Spinorama Preference Score with Perfect Sub | 6.15 | 6.41 |
| DIY Kit | No | No |
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Prices on this page were last checked October 9, 2026 at 8:01 AM 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
Polk T50: $498 per pair Amazon eBay
Same family: the Polk T15 (bookshelf, rated 1.9/5).
Pros: Pretty deep bass for the price. Distortion at 86dB SPL/1m is reasonably controlled outside a narrow spike around 250Hz. The reviewer notes performance is “not too bad for a budget speaker” once the two main tonal issues are addressed with EQ. Measured bass extension of 47Hz (-3dB), with a measured sensitivity of 86.3dB.
Cons: 5dB peak at 1kHz, 4dB bright top end from 11kHz on up. Just okay vertical off axis. Impedance and phase show several resonances between 200Hz-1kHz, with a minimum impedance of 4.2 ohms. Distortion rises substantially at 96dB SPL/1m across the midrange, with repeated peaks between 100Hz-2kHz.
Full Polk T50 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 40.4”H x 9.3”W x 12.5”D (1026.2 x 235.0 x 317.5 mm) |
| Drivers | 2x 6.5” bi-laminate paper cone woofers, 1x 1” Terylene dome tweeter + 2x 8” passive bass radiators |
| Impedance | 4 ohms nominal (4.2 ohms minimum, measured by Audio Science Review) |
| Sensitivity | 86.3dB (2.83V/1m, measured by Audio Science Review) |
| Spinorama Preference Score | 4.14 |
| Spinorama Preference Score with Perfect Sub | 6.15 |
| Weight | 75.4 lbs (34.2 kg) |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Q Acoustics 5040: $4,014.96 per pair Amazon eBay
Same family: the Q Acoustics 5010 (smaller bookshelf, estimated 3.5/5), the Q Acoustics 5020 (larger bookshelf, rated 2.2/5), the Q Acoustics 5050 (larger floorstanding, ranked higher, estimated 4.3/5) and the Q Acoustics 5090 (center, estimated 3.7/5).
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
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- Q Acoustics 5040 vs Dynaudio Emit 30
- Q Acoustics 5040 vs Klipsch RP-6000F II
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