Short answer: the JBL HDI-3600 for better sound quality, the PSB Imagine T65 for the lower price. The JBL HDI-3600 ranks #21 of 56 floorstanding speakers at $3800. The PSB Imagine T65 ranks #26 at $2699, $1101 cheaper.
On the JBL HDI-3600 side: CEA2034 spinorama shows a fairly even on-axis response and flat overall frequency response, with high 90dB sensitivity and very low distortion through the midrange. Set against that: A wide shelving-down above 2kHz affects the in-room response, and vertical dispersion is a bigger issue than horizontal - the reviewer noted the dip is wider here than on the smaller HDI-1600, making it more audible.
What the PSB Imagine T65 gets right: Three-way design with dual 6.5” woven carbon fiber woofers delivers genuinely strong, extended low end for a $2,699 tower - among the better performers Erin has measured in this price class. The catch: 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.
Buy the JBL HDI-3600 if sound quality matters more than the price. Buy the PSB Imagine T65 if the price matters more than sound quality.
Specifications Side By Side
| JBL HDI-3600 | PSB Imagine T65 | |
|---|---|---|
| Price | $3800 | $2,699 |
| Ranked | #21 of 56 in Large Size Floorstanding Speakers | #26 of 56 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 78Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) | 47Hz (measured average, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 62Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) | 26Hz (measured average, Erin’s Audio Corner) |
| Sensitivity | 89.5dB (2.83V/1m, measured, Audio Science Review) | 85.1dB (measured average, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal | 8 ohms nominal (3.3 ohms minimum measured by Erin’s Audio Corner; manufacturer specifies 4 ohms minimum) |
| Frequency Response | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) | 28Hz - 20kHz (±1.5dB, manufacturer specified) |
| Drivers | 2410H-2 1" compression driver, 3x 6.5" Advanced Aluminum Matrix woofers | 1" titanium dome tweeter, 5.25" woven carbon fiber midrange, 2x 6.5" woven carbon fiber woofers |
| Weight | 61.7 lbs / 28 kg each | 44 lbs each |
| Dimensions | 40.5"H x 10.2"W x 13.5"D (1029 x 260 x 343 mm) | 38-13/16"H x 8-3/8"W x 13.5"D (986 x 213 x 343mm) |
| Woofer Cabinet | ported, dual rear-firing | - |
| Crossovers | - | 600Hz & 2000Hz, 4th-order Linkwitz-Riley |
| Recommended Power | - | 20-200W |
| Bass Reflex | - | Dual rear slot ports, individual woofer chambers |
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The Two Speakers In Full
JBL HDI-3600: $3800 Audioadvice
Pros: CEA2034 spinorama shows a fairly even on-axis response and flat overall frequency response, with high 90dB sensitivity and very low distortion through the midrange. Triple 6.5” Advanced Aluminum Matrix woofers and a 1” compression driver in JBL’s HDI waveguide.
Cons: A wide shelving-down above 2kHz affects the in-room response, and vertical dispersion is a bigger issue than horizontal - the reviewer noted the dip is wider here than on the smaller HDI-1600, making it more audible. Narrow vertical sweet spot means careful listener-height positioning matters more than usual.
Full JBL HDI-3600 review and specifications →
| Bass Extension (-10dB) | 62Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 78Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review) |
| Dimensions | 40.5"H x 10.2"W x 13.5"D (1029 x 260 x 343 mm) |
| Drivers | 2410H-2 1" compression driver, 3x 6.5" Advanced Aluminum Matrix woofers |
| Frequency Response | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 4 ohms nominal |
| Sensitivity | 89.5dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 61.7 lbs / 28 kg each |
| Woofer Cabinet | ported, dual rear-firing |
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PSB Imagine T65: $2,699 The Audio Factory
Pros: Three-way design with dual 6.5” woven carbon fiber woofers delivers genuinely strong, extended low end for a $2,699 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.
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) |
| Bass Reflex | Dual rear slot ports, individual woofer chambers |
| Crossovers | 600Hz & 2000Hz, 4th-order Linkwitz-Riley |
| Dimensions | 38-13/16"H x 8-3/8"W x 13.5"D (986 x 213 x 343mm) |
| Drivers | 1" titanium dome tweeter, 5.25" woven carbon fiber midrange, 2x 6.5" woven carbon fiber woofers |
| 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) |
| Weight | 44 lbs each |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- PSB Imagine T65 vs Polk Reserve R500
- PSB Imagine T65 vs Emotiva Airmotiv T2+
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