Short answer: the Ascend Acoustics ELX Ribbon Tower. It ranks #12 of 228 floorstanding speakers by sound quality, rated 4.6/5, at $5,698. The Q Acoustics 5040 ranks #113, rated 4.1/5, at $3,998, $1,700 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Ascend Acoustics ELX Ribbon Tower is the more accurate, deeper-bass choice. A 3-way bamboo tower with a RAAL ribbon tweeter that measures a 6.97 preference score, bass to 38.7Hz and a nearly flat on-axis response. Its measured preference score, a predictor of how neutral it sounds, is 6.97 against 3.80 for the Q Acoustics 5040. Its bass reaches about 38.7Hz before falling 3dB, against 70Hz for the Q Acoustics 5040. Watch for: Listening window smoothness measures a moderate 0.40 and on axis deviation runs 0.286dB average, both trailing the tighter figures posted by some smaller passive AsciLab and Ascend bookshelf models.
The case for the Q Acoustics 5040: C3 (Continuous Curved Cone) driver profile technology provides smooth midrange integration, controlled cone breakup, and improved bass damping. The catch: 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 Ascend Acoustics ELX Ribbon Tower. It is rated higher for sound quality, and the $1,700 saving on the Q Acoustics 5040 is not enough to make up the difference.
Looking for alternatives? See the complete Passive Home rankings.
A 3-way bamboo tower with a RAAL ribbon tweeter that measures a 6.97 preference score, bass to 38.7Hz and a nearly flat on-axis response.
Ascend Acoustics $5,698 eBay
C3 (Continuous Curved Cone) driver profile technology provides smooth midrange integration, controlled cone breakup, and improved bass damping.
Amazon $1,999.00 eBayPrices on this page were last checked October 17, 2026 at 6:04 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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Specifications Side By Side
| Ascend Acoustics ELX Ribbon Tower | Q Acoustics 5040 | |
|---|---|---|
| Price | $5,698 per pair | $3,998 per pair |
| Ranked | #12 of 228 in Large Size Floorstanding Speakers | #113 of 228 in Large Size Floorstanding Speakers |
| Enclosure | ported | - |
| Drivers | RAAL 70-20xram ribbon tweeter, 6” SEAS Excel Curv midrange (sealed sub-chamber), 2x 6” SEAS Excel aluminum woofers | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers |
| Dimensions | 43”H x 7.5”W x 10.5”D (1092 x 190 x 267 mm) | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) |
| Weight | 56 lbs (25.4 kg) each | 39.7 lbs (18.0 kg) each |
| Sensitivity | 87.5dB @ 2.83V/1m anechoic (manufacturer) | 91.5dB (measured average, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) |
| Power Handling | 400W continuous, 600W peak | - |
| Frequency Response | 36-27,000Hz +/-3dB anechoic (manufacturer) | - |
| Bass Extension (-3dB) | 38.7Hz (measured, spinorama.org vendor data) | 70Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 28.5Hz (measured, spinorama.org vendor data) | 39Hz (measured, Erin’s Audio Corner) |
| Warranty | 7 years parts and labor | - |
| Country | United States | - |
| Spinorama Preference Score | 6.97 | 3.80 |
| Spinorama Preference Score with Perfect Sub | 8.42 | 6.41 |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: Ascend Acoustics ELX Ribbon Tower (measured by the manufacturer) and Q Acoustics 5040 (measured by Erin’s Audio Corner), via spinorama.org.
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