Short answer: the JBL HDI-3600 for better sound quality, the Klipsch RP-6000F II for the lower price. The JBL HDI-3600 ranks #28 of 71 floorstanding speakers at $3800. The Klipsch RP-6000F II ranks #54 at $1500, $2300 cheaper.
What the JBL HDI-3600 offers: 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. 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. Narrow vertical sweet spot means careful listener-height positioning matters more than usual.
What the Klipsch RP-6000F II offers: Highest power handling and clean, well-behaved compression at typical volumes. Precise imaging from the controlled horn directivity. Watch for: Worse baffle-step coloration than the smaller RP-5000F II (3-4dB swing vs 2dB), plus a sibilance issue the 5000F doesn’t have - a real regression in tonal balance despite the higher price. Bass extension is mixed - less deep at -3dB (67Hz) than the 5000F - and needs a subwoofer regardless. Narrow horizontal dispersion (~50-60 degrees).
Buy the JBL HDI-3600 if sound quality matters more than the price. Buy the Klipsch RP-6000F II if the price matters more than sound quality.
If sound quality matters at all to you, skip the Klipsch RP-6000F II. It ranks near the bottom of the 71 floorstanding speakers, so look higher up the list instead.
Specifications Side By Side
| JBL HDI-3600 | Klipsch RP-6000F II | |
|---|---|---|
| Price | $3800 | $1500 |
| Ranked | #28 of 71 in Large Size Floorstanding Speakers | #54 of 71 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) | 67Hz (measured, 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) | 33Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 89.5dB (2.83V/1m, measured, Audio Science Review) | 90dB (2.83V/1m, measured by Erin’s Audio Corner) |
| Impedance | 4 ohms nominal | 8 ohms nominal (3.7 ohms minimum, measured, Erin’s Audio Corner) |
| Frequency Response | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) | 38Hz - 25kHz (+-3dB, Manufacturer specified) |
| Drivers | 2410H-2 1" compression driver, 3x 6.5" Advanced Aluminum Matrix woofers | 1" titanium tweeter with Tractrix horn, dual 6.5" cerametallic woofers |
| Weight | 61.7 lbs / 28 kg each | 49.4 lbs / 22.4 kg |
| Dimensions | 40.5"H x 10.2"W x 13.5"D (1029 x 260 x 343 mm) | 39.6" x 9.3" x 17.6" (1006 x 236 x 446 mm) |
| Woofer Cabinet | ported, dual rear-firing | ported, rear |
| Crossover Frequency | - | 1770Hz |
| Output Power | - | 125W continuous, 500W peak |
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- KEF R5 Meta vs Klipsch RP-6000F II
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The Two Speakers In Full
JBL HDI-3600: $3800 Audioadvice eBay
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 |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Klipsch RP-6000F II: $1500 Amazon eBay
Pros: Highest power handling and clean, well-behaved compression at typical volumes. Precise imaging from the controlled horn directivity.
Cons: Worse baffle-step coloration than the smaller RP-5000F II (3-4dB swing vs 2dB), plus a sibilance issue the 5000F doesn’t have - a real regression in tonal balance despite the higher price. Bass extension is mixed - less deep at -3dB (67Hz) than the 5000F - and needs a subwoofer regardless. Narrow horizontal dispersion (~50-60 degrees).
Full Klipsch RP-6000F II review and specifications →
| Bass Extension (-10dB) | 33Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 67Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 1770Hz |
| Dimensions | 39.6" x 9.3" x 17.6" (1006 x 236 x 446 mm) |
| Drivers | 1" titanium tweeter with Tractrix horn, dual 6.5" cerametallic woofers |
| Frequency Response | 38Hz - 25kHz (+-3dB, Manufacturer specified) |
| Impedance | 8 ohms nominal (3.7 ohms minimum, measured, Erin's Audio Corner) |
| Output Power | 125W continuous, 500W peak |
| Sensitivity | 90dB (2.83V/1m, measured by Erin's Audio Corner) |
| Weight | 49.4 lbs / 22.4 kg |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Klipsch RP-6000F II vs Sony SS-CS3
- Klipsch RP-6000F II vs SVS Ultra Evolution Pinnacle
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