Short answer: it depends on which flaw you can live with. The PSB Imagine T65’s dual 6.5” carbon fiber woofers deliver genuinely strong, extended low end, but a midrange/crossover dip hurts dialogue and vocal clarity. The 5040’s C3 profile is smooth through the midrange, but a mid-bass scoop around 200Hz leaves it roughly 6dB below the mean SPL. The PSB ranks #41 of 74, the 5040 #34 of 74.
Buy the PSB Imagine T65. It is rated higher for sound quality, and the $226.02 you would save on the Q Acoustics 5040 does not close the gap.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Q Acoustics 5040 | PSB Imagine T65 | |
|---|---|---|
| Price | $2,472.98 per pair | $2,699 per pair |
| Ranked | #41 of 74 in Large Size Floorstanding Speakers | #34 of 74 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 26Hz (measured average, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) | 47Hz (measured average, Erin’s Audio Corner) |
| Dimensions | 38.1”H x 11.5”W x 14.2”D (967 x 293 x 361 mm) | 38.8” x 8.4” x 13.5” (986 x 213 x 343 mm) |
| Impedance | 6 ohms nominal (3.0 ohms minimum, measured by Erin’s Audio Corner) | 8 ohms nominal (3.3 ohms minimum measured by Erin’s Audio Corner; manufacturer specifies 4 ohms minimum) |
| Sensitivity | 91.5dB (measured average, Erin’s Audio Corner) | 85.1dB (measured average, Erin’s Audio Corner) |
| Drivers | 0.88 in. decoupled dome tweeter, twin 5.0 in. C3 Continuous Curved Cone woofers | 1” titanium dome tweeter, 5.25” woven carbon fiber midrange, 2x 6.5” woven carbon fiber woofers |
| Weight | 39.7 lbs (18.0 kg) each | 44.1 lbs (20 kg) each |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 3.80 | 5.29 |
| Spinorama Preference Score with Perfect Sub | 6.41 | 6.51 |
| DIY Kit | No | No |
| Crossover Frequency | - | 600Hz & 2000Hz, 4th-order Linkwitz-Riley |
| Recommended Power | - | 20-200W |
| Enclosure | - | Vented: dual rear slot ports, individual woofer chambers |
| Frequency Response | - | 28Hz - 20kHz (±1.5dB, manufacturer specified) |
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Prices on this page were last checked October 2, 2026 at 10:18 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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PSB Imagine T65: $2,699 per pair PSB Speakers eBay
Pros: Three-way design with dual 6.5” woven carbon fiber woofers delivers genuinely strong, extended low end for a $2699 tower: among the better performers Erin has measured in this price class. Distortion shows a clean second-order character with clear separation from third-order all the way up to 96 dB, indicating a well-controlled motor. Compression data shows enhancement rather than compression below about 50-60 Hz, so the bass can sound louder as you turn it up rather than choking off. Wide, forgiving vertical listening window (about ±25°) thanks to the 3-way layout, giving more seating and placement flexibility than most towers. Plenty of dynamic headroom for home theater use or a two-channel system: 100W drove it comfortably in Erin’s room. Measured bass extension of 47Hz (-3dB), with a measured sensitivity of 85.1dB.
Cons: Noticeable dip in the midrange/crossover region that Erin flagged as affecting dialogue and vocal clarity, though he notes a couple bands of EQ smooths it out. Some horizontal dispersion mismatch (about 10-15° of ballooning between 1-3 kHz) between the midrange and tweeter can add extra perceived attack or detail if your room’s sidewalls are reflective. Dips to 4 ohms, so it wants an amplifier comfortable driving a 4-ohm load. Distortion climbs above 3% around 60 Hz at 96 dB, though it’s benign second-order distortion.
Full PSB Imagine T65 review and specifications →
| Bass Extension (-10dB) | 26Hz (measured average, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 47Hz (measured average, Erin’s Audio Corner) |
| Crossover Frequency | 600Hz & 2000Hz, 4th-order Linkwitz-Riley |
| DIY Kit | No |
| Dimensions | 38.8” x 8.4” x 13.5” (986 x 213 x 343 mm) |
| Drivers | 1” titanium dome tweeter, 5.25” woven carbon fiber midrange, 2x 6.5” woven carbon fiber woofers |
| Enclosure | Vented: dual rear slot ports, individual woofer chambers |
| Frequency Response | 28Hz - 20kHz (±1.5dB, manufacturer specified) |
| Impedance | 8 ohms nominal (3.3 ohms minimum measured by Erin’s Audio Corner; manufacturer specifies 4 ohms minimum) |
| Recommended Power | 20-200W |
| Sensitivity | 85.1dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.29 |
| Spinorama Preference Score with Perfect Sub | 6.51 |
| Weight | 44.1 lbs (20 kg) each |
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- Reviews, Comparisons and Sound Samples
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- PSB Imagine T65 vs Polk Audio Reserve R700
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