Short answer: the JBL HDI-3600. It ranks #58 of 188 floorstanding speakers by sound quality, rated 4.3/5, at $3,800. The KEF Q11 Meta ranks #103, rated 4.0/5, at $2,499.98, $1,300.02 cheaper, which does not close the gap in sound quality.
The KEF Q11 Meta is the more accurate, deeper-bass choice. Three-way tower design with a coaxial layout: a 3/4” aluminum dome tweeter (with KEF’s Metamaterial Absorption Technology behind it) mounted at the center of a 4” mid-range, plus three 6.5” bass drivers. Its measured preference score, a predictor of how neutral it sounds, is 6.72 against 4.64 for the JBL HDI-3600. Its bass reaches about 60Hz before falling 3dB, against 78Hz for the JBL HDI-3600. The catch: Genuinely dark-sounding on raw on-axis measurement, and needs a typical room with sidewall reflections (within about 6 feet/2 meters) to sound properly neutral: in a large room with little sidewall interaction, it may sound too dull for some listeners.
What the JBL HDI-3600 does well: 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. The tradeoff: 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.
Buy the JBL HDI-3600. It is rated higher for sound quality, and the $1,300.02 you would save on the KEF Q11 Meta does not close the gap.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| KEF Q11 Meta | JBL HDI-3600 | |
|---|---|---|
| Price | $2,499.98 per pair | $3800 per pair |
| Ranked | #103 of 188 in Large Size Floorstanding Speakers | #58 of 188 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) | 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) | 60Hz (measured, Erin’s Audio Corner) | 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) |
| Drivers | 25mm tweeter + dual 165mm drivers | 2410H-2 1” compression driver, 3x 6.5” Advanced Aluminum Matrix woofers |
| Weight | 106.9 lbs (48.5 kg) | 61.7 lbs (28 kg) each |
| Sensitivity | 88.6dB (measured, Erin’s Audio Corner) | 89.5dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 4 ohms nominal (3.2 ohms minimum, measured, Erin’s Audio Corner) | 4 ohms nominal |
| Dimensions | 43.8”H x 12.5”W x 15”D (1112.8 x 317.5 x 381.0 mm) | 40.5”H x 10.2”W x 13.5”D (1029 x 260 x 343 mm) |
| Woofer Cabinet | ported, rear | ported, dual rear-firing |
| Spinorama Preference Score | 6.72 | 4.64 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 8.03 | 6.95 (spinorama.org) |
| DIY Kit | No | No |
| Frequency Response | - | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) |
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The Two Speakers In Full
KEF Q11 Meta: $2,499.98 per pair Amazon eBay
Same family: the KEF Q1 Meta (smallest bookshelf, rated 3.6/5), the KEF Q4 Meta (bookshelf, estimated 3.4/5), the KEF Q3 Meta (bookshelf, rated 3.4/5), the KEF Q Concerto Meta (largest bookshelf, rated 4.6/5), the KEF Q7 Meta (smaller floorstanding, ranked lower, estimated 3.5/5) and the KEF Q6 Meta (center, rated 3.9/5).
Pros: Three-way tower design with a coaxial layout: a 3/4” aluminum dome tweeter (with KEF’s Metamaterial Absorption Technology behind it) mounted at the center of a 4” mid-range, plus three 6.5” bass drivers. Extremely linear estimated in-room response when placed correctly, thanks to a deliberately declining on-axis response paired with well-controlled directivity: a technically sound design philosophy, even though it reads as “dark” in raw anechoic on-axis measurements. In-room bass extension to about 40-50Hz when placed near a wall, thanks to extended bass-shelf tuning. Sounds excellent whether pointed directly at the listener or toed out a full 30° parallel to the back wall: unusually flexible placement. More vertical listening leeway than standard non-coaxial two-way designs, thanks to the coincident tweeter/midrange. Distortion looks good at both 86dB and 96dB, and multitone distortion holds up well too. Comes with a plinth/outrigger kit for stability given its floorstanding height (about 43-44”). Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 88.6dB.
Cons: Genuinely dark-sounding on raw on-axis measurement, and needs a typical room with sidewall reflections (within about 6 feet/2 meters) to sound properly neutral: in a large room with little sidewall interaction, it may sound too dull for some listeners. Must be placed close to a rear wall (about 1 foot) to get proper bass: pulling it out to the “standard” 3-foot audiophile recommendation causes bass output to drop off noticeably. Horizontal radiation of about ±50° is narrower than the reviewer’s preferred ±60°, giving a slightly less enveloping soundstage than some rivals. Notably darker than sibling KEF models in the same product family: measures 2-5dB less top-end energy than the R3 Meta and a few dB less than the Q Concerto Meta. Minor lingering resonances appear in burst decay measurements between 500Hz-1kHz. The tweeter shows some strain at very high output volumes, a limitation the reviewer notes is common even among more budget-friendly speakers generally.
Full KEF Q11 Meta review and specifications →
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 43.8”H x 12.5”W x 15”D (1112.8 x 317.5 x 381.0 mm) |
| Drivers | 25mm tweeter + dual 165mm drivers |
| Impedance | 4 ohms nominal (3.2 ohms minimum, measured, Erin’s Audio Corner) |
| Sensitivity | 88.6dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.72 |
| Spinorama Preference Score with Perfect Sub | 8.03 |
| Weight | 106.9 lbs (48.5 kg) |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL HDI-3600: $3800 per pair Audio Advice eBay
Same family: the JBL HDI-1600 (bookshelf, rated 4.2/5), the JBL HDI-3800 (larger floorstanding, ranked higher, rated 4.5/5) and the JBL HDI-4500 (center, rated 3.7/5).
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. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 89.5dB.
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) |
| DIY Kit | No |
| 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) |
| Spinorama Preference Score | 4.64 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.95 (spinorama.org) |
| Weight | 61.7 lbs (28 kg) each |
| Woofer Cabinet | ported, dual rear-firing |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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