Short answer: the Q Acoustics 5040. It ranks #113 of 226 floorstanding speakers by sound quality (rated 4.1/5) at $4,014.96 and is still sold new; the Sony SS-CS3 ranks #213 (rated 2.8/5) and is discontinued, so it is only an option used. The Sony SS-CS3’s replacement, the Sony SS-CS3 M2, is rated 3.0/5.
The Q Acoustics 5040 is the better-sounding option. 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.
Why pick the Sony SS-CS3: Affordable entry-level floorstanding tower offering solid sensitivity (88.6dB SPL at 2.83V/1m), making it easy to power with standard budget AVRs. The catch: Severe cabinet and driver resonances plague the passband between 100Hz and 600Hz, imparting audible coloration and chesty resonances to male vocals and acoustic instruments.
Buy the Q Acoustics 5040. It is rated higher for sound quality, and the Sony SS-CS3 is discontinued, so it is only available used.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Q Acoustics 5040 | Sony SS-CS3 | |
|---|---|---|
| Price | $4,014.96 per pair | $450 per pair Discontinued |
| Ranked | #113 of 226 in Large Size Floorstanding Speakers | #213 of 226 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) | 72Hz (measured, Erin’s Audio Corner) |
| Dimensions | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) | 36.3”H x 9.1”W x 10.2”D (922 x 230 x 260 mm) |
| Impedance | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) | 6 ohms nominal |
| Sensitivity | 91.5dB (measured average, Erin’s Audio Corner) | 88.6dB (measured average, Erin’s Audio Corner) |
| Drivers | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers | 0.75 in. supertweeter, 0.98 in. polyester main tweeter, dual 5.12 in. MRC woofers |
| Weight | 39.7 lbs (18.0 kg) each | 25.4 lbs (11.5 kg) each |
| Woofer Cabinet | ported, rear | ported, front |
| Spinorama Preference Score | 3.80 | 4.11 |
| Spinorama Preference Score with Perfect Sub | 6.41 | 6.65 |
| 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
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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Sony SS-CS3: $450 per pair Discontinued eBay
Newer model: the Sony SS-CS3 M2, ranked higher, estimated 3/5.
Same family: the Sony SS-CS5 (bookshelf, rated 3.5/5).
Pros: Affordable entry-level floorstanding tower offering solid sensitivity (88.6dB SPL at 2.83V/1m), making it easy to power with standard budget AVRs. Harmonic distortion remains reasonably low at moderate listening levels (86dB SPL) when high-pass filtered above 80-100Hz with a dedicated subwoofer. Front-ported design allows relatively close placement to front boundaries without excessive port occlusion. Measured bass extension of 72Hz (-3dB), with a measured sensitivity of 88.6dB.
Cons: Severe cabinet and driver resonances plague the passband between 100Hz and 600Hz, imparting audible coloration and chesty resonances to male vocals and acoustic instruments. Irregular frequency response peaks and dips make automated receiver room correction difficult to equalize effectively. Poor low-frequency extension (F3 of 72Hz, F10 of 39Hz) for a floorstander, combined with rapid distortion escalation below 80Hz at higher SPLs (96dB+). Supertweeter driver adds crossover complexity without providing audible high-frequency benefit within the human hearing spectrum. Discontinued.
Full Sony SS-CS3 review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 72Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 36.3”H x 9.1”W x 10.2”D (922 x 230 x 260 mm) |
| Drivers | 0.75 in. supertweeter, 0.98 in. polyester main tweeter, dual 5.12 in. MRC woofers |
| Impedance | 6 ohms nominal |
| Sensitivity | 88.6dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.11 |
| Spinorama Preference Score with Perfect Sub | 6.65 |
| Weight | 25.4 lbs (11.5 kg) each |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons