Short answer: the JBL HDI-3600 for output and flat response, the Revel F35 for value. The HDI-3600’s CEA2034 spinorama shows a fairly even on-axis and flat response with high 90dB sensitivity and very low midrange distortion, though a wide shelving-down above 2kHz affects the in-room response. The F35’s four-driver, waveguide-loaded layout is the cleaner buy, but it needs a subwoofer at an F3 of 61Hz and F10 of 39Hz.
Buy the Revel Concerta2 F35. It is rated higher for sound quality than the JBL HDI-3600 and costs less, so only choose the other one for a particular feature it does better.
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Two-and-a-half-way, four-driver design: a 1” aluminum dome tweeter on a waveguide, a 5.25” mid-range, and dual 5.25” mid-bass drivers in a rear-ported cabinet.
Crutchfield $900 eBay
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.
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Specifications Side By Side
| Revel Concerta2 F35 | JBL HDI-3600 | |
|---|---|---|
| Price | $900 per pair | $3800 per pair |
| Ranked | #31 of 228 in Large Size Floorstanding Speakers | #63 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 50Hz (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) | 70Hz (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 | 40.3”H x 8.4”W x 12.2”D (1023.6 x 213.4 x 309.9 mm) | 40.5”H x 10.2”W x 13.5”D (1029 x 260 x 343 mm) |
| Impedance | 6 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner) | 4 ohms nominal |
| Sensitivity | 89.4dB (measured, Erin’s Audio Corner; 90dB manufacturer specified) | 89.5dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 3x 5.25” deep anodized aluminum cone woofers, 1” Aluminum Tweeter | 2410H-2 1” compression driver, 3x 6.5” Advanced Aluminum Matrix woofers |
| Weight | 41 lbs (18.6 kg) each | 61.7 lbs (28 kg) each |
| Woofer Cabinet | ported, rear | ported, dual rear-firing |
| Spinorama Preference Score | 5.35 | 4.64 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.30 | 6.95 (spinorama.org) |
| DIY Kit | No | No |
| Frequency Response | - | 38Hz - 30kHz (+/-3dB) (Manufacturer specified) |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared.
Measurement data: Revel Concerta2 F35 (measured by Audio Science Review) and JBL HDI-3600 (measured by Audio Science Review), via spinorama.org.
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