Short answer: the Q Acoustics 5040 for better sound quality, the Sony SS-CS3 for the lower price. The Q Acoustics 5040 ranks #33 of 71 floorstanding speakers at $1236.49. The Sony SS-CS3 ranks #59 at $450, $786.49 cheaper.
What the Q Acoustics 5040 offers: 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. 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. 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.
What the Sony SS-CS3 offers: 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. Watch for: 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.
Buy the Q Acoustics 5040 if sound quality matters more than the price. Buy the Sony SS-CS3 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Sony SS-CS3. It ranks near the bottom of the 71 floorstanding speakers, so look higher up the list instead.
Specifications Side By Side
| Q Acoustics 5040 | Sony SS-CS3 | |
|---|---|---|
| Price | $1,236.49 | $450.00 Discontinued |
| Ranked | #33 of 71 in Large Size Floorstanding Speakers | #59 of 71 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 |
| Discontinued | - | Yes |
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Prices on this page were last checked August 25, 2026 at 6:19 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: $1,236.49 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.
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) |
| 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) |
| 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 Polk Audio Reserve R700
- Q Acoustics 5040 vs PSB Imagine T65
- Q Acoustics 5040 vs ELAC Debut 3.0 DF63
- Q Acoustics 5040 vs Emotiva Airmotiv T2+
- Q Acoustics 5040 vs Polk Reserve R500
- Q Acoustics 5040 vs JBL HDI-3600
- Q Acoustics 5040 vs Definitive Technology BP-9020
- Q Acoustics 5040 vs KEF R11 Meta
- See all 36 comparisons
Sony SS-CS3: $450.00 Discontinued eBay
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.
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) |
| Dimensions | 36.3"H x 9.1"W x 10.2"D (922 x 230 x 260 mm) |
| Discontinued | Yes |
| 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) |
| Weight | 25.4 lbs / 11.5 kg each |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons