Short answer: the PSB Imagine T65. It ranks #61 of 188 floorstanding speakers by sound quality (rated 4.3/5) at $2,699 and is still sold new; the Bose 901 Series V ranks #187 (rated 1.9/5) and is discontinued, so it is only an option used.
Choose the PSB Imagine T65 for three-way design with dual 6.5” woven carbon fiber woofers delivers: Watch for: 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.
Choose the Bose 901 Series V for historically distinctive direct/reflecting architecture uses eight: Watch for: even with the required EQ, Erin measured only about 81dB sensitivity, grossly non-flat response, numerous impedance/resonance irregularities and very high distortion.
Buy the PSB Imagine T65. It is rated higher for sound quality; the Bose 901 Series V is no longer sold new.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| PSB Imagine T65 | Bose 901 Series V | |
|---|---|---|
| Price | $2,699 per pair | Discontinued |
| Ranked | #61 of 188 in Large Size Floorstanding Speakers | #187 of 188 in Large Size Floorstanding Speakers |
| Drivers | 1” titanium dome tweeter, 5.25” woven carbon fiber midrange, 2x 6.5” woven carbon fiber woofers | Nine full-range drivers: eight rear-firing, one front-firing |
| Crossover Frequency | 600Hz & 2000Hz, 4th-order Linkwitz-Riley | - |
| Dimensions | 38.8” x 8.4” x 13.5” (986 x 213 x 343 mm) | 21”H x 21”W x 12.6”D (533.4 x 533.4 x 320.7 mm) |
| Weight | 44.1 lbs (20 kg) each | 35.3 lbs (16 kg) each |
| Impedance | 8 ohms nominal (3.3 ohms minimum measured by Erin’s Audio Corner; manufacturer specifies 4 ohms minimum) | 6.2 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.1dB (measured average, Erin’s Audio Corner) | Approximately 81dB/2.83V/1m with tested EQ setting (measured, Erin’s Audio Corner) |
| Recommended Power | 20-200W | - |
| Enclosure | Vented: dual rear slot ports, individual woofer chambers | - |
| Bass Extension (-3dB) | 47Hz (measured average, Erin’s Audio Corner) | 55.8Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 26Hz (measured average, Erin’s Audio Corner) | 34.5Hz (measured, Erin’s Audio Corner) |
| Frequency Response | 28Hz - 20kHz (±1.5dB, manufacturer specified) | - |
| Spinorama Preference Score | 5.29 | 0.43 |
| Spinorama Preference Score with Perfect Sub | 6.51 | 2.11 |
| DIY Kit | No | No |
| Bass Extension | - | Strongly dependent on supplied active equalizer and room (measured, Erin’s Audio Corner) |
| DSP | - | External analog active equalizer required |
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The Two Speakers In Full
PSB Imagine T65: $2,699 per pair PSB Speakers eBay
Same family: the PSB Imagine B50 (bookshelf, rated 3.7/5) and the PSB Imagine T54 (smaller floorstanding, ranked lower, estimated 4.2/5).
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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Bose 901 Series V Discontinued eBay
Pros: Historically distinctive direct/reflecting architecture uses eight rear-firing and one front-firing full-range drivers to create a very large, room-filling presentation. Erin measured a benign 6.2-ohm minimum impedance, so the raw electrical load is easier than many modern four-ohm speakers. The supplied active equalizer offers user-adjustable tonal balance and is integral to obtaining usable bandwidth. Measured bass extension of 55.8Hz (-3dB), with a measured sensitivity of 81dB.
Cons: Even with the required EQ, Erin measured only about 81dB sensitivity, grossly non-flat response, numerous impedance/resonance irregularities and very high distortion. Output above roughly 90-95dB at his seat became audibly poor; multitone testing reached only about 98dB before the distortion limit. The reflection-dominant radiation prevents precise imaging and makes results strongly room-dependent. It requires the proprietary equalizer and substantial amplifier power despite its benign impedance. Discontinued.
Full Bose 901 Series V review and specifications →
| Bass Extension | Strongly dependent on supplied active equalizer and room (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-10dB) | 34.5Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 55.8Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| DSP | External analog active equalizer required |
| Dimensions | 21”H x 21”W x 12.6”D (533.4 x 533.4 x 320.7 mm) |
| Drivers | Nine full-range drivers: eight rear-firing, one front-firing |
| Impedance | 6.2 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | Approximately 81dB/2.83V/1m with tested EQ setting (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 0.43 |
| Spinorama Preference Score with Perfect Sub | 2.11 |
| Weight | 35.3 lbs (16 kg) each |
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