Short answer: the JBL Studio 698. It ranks #16 of 56 floorstanding speakers by sound quality at $699; the JBL HDI-3600 ranks #21 and costs $3800, so there is not much of a tradeoff to weigh.
The case for the JBL Studio 698: High-Definition Imaging (HDI) horn waveguide paired with a 1” compression driver provides excellent high-frequency directivity control and seamless acoustic handoff to the 6” PolyPlas midrange. The tradeoff: Measured response exhibits a prominent mid-bass emphasis bump around 80Hz that can sound overly thick or chesty in smaller rooms without DSP EQ.
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. The catch: 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 Studio 698. It ranks higher for sound quality than the JBL HDI-3600 and costs less, so there is no real case for the other one.
Specifications Side By Side
| JBL Studio 698 | JBL HDI-3600 | |
|---|---|---|
| Price | $699.00 | $3800 |
| Ranked | #16 of 56 in Large Size Floorstanding Speakers | #21 of 56 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 34Hz (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) | 53Hz (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 | 41.7"H x 11.8"W x 15.7"D (1058 x 300 x 400 mm) | 40.5"H x 10.2"W x 13.5"D (1029 x 260 x 343 mm) |
| Impedance | 6 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 4 ohms nominal |
| Sensitivity | 90dB (measured average, Erin’s Audio Corner) | 89.5dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 1 in. High-Definition Imaging compression driver, 6 in. PolyPlas midrange, dual 8 in. PolyPlas woofers | 2410H-2 1" compression driver, 3x 6.5" Advanced Aluminum Matrix woofers |
| Weight | 78.9 lbs / 35.8 kg each | 61.7 lbs / 28 kg each |
| Woofer Cabinet | ported, rear | ported, dual rear-firing |
| Frequency Response | - | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) |
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- JBL HDI-3600 vs Polk Reserve R500
- JBL HDI-3600 vs ELAC DF63
The Two Speakers In Full
JBL Studio 698: $699.00 Amazon Crutchfield
Pros: High-Definition Imaging (HDI) horn waveguide paired with a 1” compression driver provides excellent high-frequency directivity control and seamless acoustic handoff to the 6” PolyPlas midrange. Dual 8” PolyPlas woofers deliver robust low-end authority with solid bass extension down to an F3 of 53Hz and F10 of 34Hz. High voltage sensitivity (90dB SPL at 2.83V/1m) and clean power handling provide effortless dynamic headroom and low distortion for home theater and music listening.
Cons: Measured response exhibits a prominent mid-bass emphasis bump around 80Hz that can sound overly thick or chesty in smaller rooms without DSP EQ. Treble response lacks top-octave ‘air’ above 12kHz compared to high-end dome or ribbon tweeters. Physically large, heavy cabinet (35.8 kg per speaker) requires careful room placement and a wide acoustic footprint.
Full JBL Studio 698 review and specifications →
| Bass Extension (-10dB) | 34Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 53Hz (measured, Erin's Audio Corner) |
| Dimensions | 41.7"H x 11.8"W x 15.7"D (1058 x 300 x 400 mm) |
| Drivers | 1 in. High-Definition Imaging compression driver, 6 in. PolyPlas midrange, dual 8 in. PolyPlas woofers |
| Impedance | 6 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin's Audio Corner) |
| Sensitivity | 90dB (measured average, Erin's Audio Corner) |
| Weight | 78.9 lbs / 35.8 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.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons