Short answer: the JBL HDI-3600 for better sound quality, the Klipsch RP-8000F II for the lower price. The JBL HDI-3600 ranks #28 of 68 floorstanding speakers at $3800. The Klipsch RP-8000F II ranks #52 at $1800, $2000 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-8000F II offers: Highest sensitivity of the RP II floorstander line (~92dB measured) and the best dynamics/compression behavior of the three under load - the cleanest at high output. Dual 8-inch woofers and the highest power handling in the line. Watch for: Mid-bass sounds lean despite the dual 8-inch woofers, and bass extension disappointed for its size - expected to reach 50Hz, didn’t get there in-room. Has its own edgy upper-mid bump (2-6kHz) that’s harder to EQ out than the other two models’ issues, since it stems from the vertical horn/woofer offset rather than simple tonal balance. The most placement-critical of the three, with the narrowest horizontal (~40-50 degrees) and vertical (+5/-10 degrees) dispersion.
Buy the JBL HDI-3600 if sound quality matters more than the price. Buy the Klipsch RP-8000F II if the price matters more than sound quality.
If sound quality matters at all to you, skip the Klipsch RP-8000F II. It ranks near the bottom of the 68 floorstanding speakers, so look higher up the list instead.
Specifications Side By Side
| JBL HDI-3600 | Klipsch RP-8000F II | |
|---|---|---|
| Price | $3800 | $1800 |
| Ranked | #28 of 68 in Large Size Floorstanding Speakers | #52 of 68 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) | 92dB (2.83V/1m, measured by Erin’s Audio Corner) |
| Impedance | 4 ohms nominal | 8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin’s Audio Corner) |
| Frequency Response | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) | 35Hz - 25kHz (+-3dB, Manufacturer specified) |
| Drivers | 2410H-2 1" compression driver, 3x 6.5" Advanced Aluminum Matrix woofers | 1" titanium tweeter with 90x90 Tractrix horn, dual 8" cerametallic woofers |
| Weight | 61.7 lbs / 28 kg each | 61.3 lbs / 27.8 kg |
| Dimensions | 40.5"H x 10.2"W x 13.5"D (1029 x 260 x 343 mm) | 43.1" x 10.8" x 18.3" (1095 x 275 x 464 mm) |
| Woofer Cabinet | ported, dual rear-firing | ported, rear |
| Crossover Frequency | - | 1630Hz |
| Output Power | - | 150W continuous, 600W peak |
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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-8000F II: $1800 Amazon eBay
Pros: Highest sensitivity of the RP II floorstander line (~92dB measured) and the best dynamics/compression behavior of the three under load - the cleanest at high output. Dual 8-inch woofers and the highest power handling in the line.
Cons: Mid-bass sounds lean despite the dual 8-inch woofers, and bass extension disappointed for its size - expected to reach 50Hz, didn’t get there in-room. Has its own edgy upper-mid bump (2-6kHz) that’s harder to EQ out than the other two models’ issues, since it stems from the vertical horn/woofer offset rather than simple tonal balance. The most placement-critical of the three, with the narrowest horizontal (~40-50 degrees) and vertical (+5/-10 degrees) dispersion.
Full Klipsch RP-8000F II review and specifications →
| Bass Extension (-10dB) | 33Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 67Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 1630Hz |
| Dimensions | 43.1" x 10.8" x 18.3" (1095 x 275 x 464 mm) |
| Drivers | 1" titanium tweeter with 90x90 Tractrix horn, dual 8" cerametallic woofers |
| Frequency Response | 35Hz - 25kHz (+-3dB, Manufacturer specified) |
| Impedance | 8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin's Audio Corner) |
| Output Power | 150W continuous, 600W peak |
| Sensitivity | 92dB (2.83V/1m, measured by Erin's Audio Corner) |
| Weight | 61.3 lbs / 27.8 kg |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Klipsch RP-8000F II vs Dynaudio Emit 30
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- Klipsch RP-8000F II vs Klipsch RP-5000F II
- Klipsch RP-8000F II vs KLH Model Five
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