Short answer: the KEF R5 Meta for better sound quality, the JBL HDI-3600 for the lower price. The KEF R5 Meta ranks #9 of 59 floorstanding speakers at $3999.99. The JBL HDI-3600 ranks #23 at $3800, $199.99 cheaper.
On the KEF R5 Meta side: 12th generation 5” Uni-Q coaxial driver array with Metamaterial Absorption Technology (MAT) delivers remarkably smooth, controlled horizontal (±50°) and vertical directivity with near-identical off-axis tracking. The tradeoff: Low-frequency extension (F3 of 52Hz, F10 of 38Hz) requires pairing with a dedicated subwoofer crossed over at 80Hz for high-output home theater or bass-heavy music performance.
What the JBL HDI-3600 gets right: 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. Watch for: 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 KEF R5 Meta if sound quality matters more than the price. Buy the JBL HDI-3600 if the price matters more than sound quality.
Specifications Side By Side
| KEF R5 Meta | JBL HDI-3600 | |
|---|---|---|
| Price | $3,999.99 Discontinued | $3800 |
| Ranked | #9 of 59 in Large Size Floorstanding Speakers | #23 of 59 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 38Hz (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) | 52Hz (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) |
| Dimensions | 42.2"H x 10.7"W x 13.6"D (1073 x 273 x 346 mm) | 40.5"H x 10.2"W x 13.5"D (1029 x 260 x 343 mm) |
| Discontinued | Yes | - |
| Impedance | 4 ohms nominal | 4 ohms nominal |
| Sensitivity | 86dB (measured average, Erin’s Audio Corner) | 89.5dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 1 in. vented aluminum dome tweeter with MAT, 5 in. aluminum cone midrange, two 5.25 in. hybrid aluminum cone woofers | 2410H-2 1" compression driver, 3x 6.5" Advanced Aluminum Matrix woofers |
| Weight | 54 lbs / 24.5 kg each | 61.7 lbs / 28 kg each |
| Woofer Cabinet | ported, rear | ported, dual rear-firing |
| Frequency Response | - | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) |
Related Speaker Comparisons
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- JBL HDI-3800 vs KEF R5
- KEF R5 vs KEF Reference 203
- Revel F228Be vs Emotiva Airmotiv T2+
- KEF R5 Meta vs KEF R11 Meta
- KEF R11 Meta vs JBL HDI-3600
The Two Speakers In Full
KEF R5 Meta: $3,999.99 Discontinued
Pros: 12th generation 5” Uni-Q coaxial driver array with Metamaterial Absorption Technology (MAT) delivers remarkably smooth, controlled horizontal (±50°) and vertical directivity with near-identical off-axis tracking. Exceptional frequency response linearity through the midrange and treble that takes extremely well to minor parametric EQ adjustments. Constrained Layer Damping cabinet construction and flexible rear ports minimize enclosure resonances and port turbulence. Deliberately tuned low-frequency roll-off profile permits boundary-adjacent room placement near front walls without boomy acoustic buildup.
Cons: Low-frequency extension (F3 of 52Hz, F10 of 38Hz) requires pairing with a dedicated subwoofer crossed over at 80Hz for high-output home theater or bass-heavy music performance. High-frequency radiation above 7kHz shows a mild on-axis taper (1-2dB downward slope), performing best when listened to 10-20° off-axis. Moderate sensitivity (~86dB SPL average) requires a clean, robust 4-ohm capable amplifier to drive high dynamic peaks without clipping. Discontinued.
Full KEF R5 Meta review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 52Hz (measured, Erin's Audio Corner) |
| Dimensions | 42.2"H x 10.7"W x 13.6"D (1073 x 273 x 346 mm) |
| Discontinued | Yes |
| Drivers | 1 in. vented aluminum dome tweeter with MAT, 5 in. aluminum cone midrange, two 5.25 in. hybrid aluminum cone woofers |
| Impedance | 4 ohms nominal |
| Sensitivity | 86dB (measured average, Erin's Audio Corner) |
| Weight | 54 lbs / 24.5 kg each |
| Woofer Cabinet | ported, rear |
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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 |
As an eBay Partner, we may be compensated if you make a purchase.
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- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons