Short answer: the Klipsch Forte IV, if you are buying new. The JBL HDI-3800 ranks higher than it (#14 vs #42 of 73 floorstanding speakers, 4.5/5 vs 4.0/5) but is discontinued, so only consider it used; the Klipsch Forte IV is still sold new at $5,499.98.
What the JBL HDI-3800 does well: 2410H-2 1” Teonex compression driver matched to a custom High-Definition Imaging (HDI) horn geometry achieves exceptional horizontal directivity control, high output capability, and effortless transient response. Watch for: On-axis frequency response features a narrow upper-frequency elevation around 8-10kHz, performing noticeably smoother when toed out 10-20° off-axis.
What the Klipsch Forte IV does well: Three-way heritage design: a 1” titanium tweeter and 1.75” compression driver for the midrange mated to a 12” woofer, plus a 15” passive radiator for extra bass reinforcement. The catch: Contrary to the classic Klipsch reputation for being forward and bright, this model is actually somewhat recessed in the 1.5-4kHz “presence” region, which can make some tracks sound dull or lacking in detail.
Buy the Klipsch Forte IV new; the JBL HDI-3800 is no longer sold new, so it only makes sense as a used find.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| JBL HDI-3800 | Klipsch Forte IV | |
|---|---|---|
| Price | $5,000.00 per pair Discontinued | $5,499.98 per pair |
| Ranked | #14 of 73 in Large Size Floorstanding Speakers | #42 of 73 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 28Hz (measured, Erin’s Audio Corner) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 37Hz (measured, Erin’s Audio Corner) | 82Hz (measured, Erin’s Audio Corner) |
| Dimensions | 43.3”H x 11.8”W x 16.4”D (1100.5 x 300.0 x 417.8 mm) | 36”H x 16.5”W x 13”D (914.4 x 419.1 x 330.2 mm) |
| Impedance | 4 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner) | 8 ohms |
| Sensitivity | 92dB (measured average, Erin’s Audio Corner) | 93.8dB (measured average, Erin’s Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic) |
| Drivers | 1 in. 2410H-2 Teonex compression driver with HDI horn, triple 8 in. Advanced Aluminum Matrix cone woofers | 1x 12” (305mm) fiber-composite woofer + 15” passive radiator, 1x 1.75” compression driver midrange on horn, 1x 1” titanium compression tweeter on horn |
| Weight | 83.8 lbs (38.0 kg) each | 117.3 lbs (53.2 kg) |
| Woofer Cabinet | ported, rear | passive radiator |
| Spinorama Preference Score | 5.62 | 3.78 |
| Spinorama Preference Score with Perfect Sub | 7.03 | 5.72 |
| DIY Kit | No | No |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL HDI-3800:
- KEF Blade Two Meta vs JBL HDI-3800
- JBL HDI-3800 vs MoFi SourcePoint V10 Master Edition
- MoFi SourcePoint 888 vs JBL HDI-3800
- JBL HDI-3800 vs Revel F328Be
- Ascend Acoustics ELX Ribbon Tower vs JBL HDI-3800
Prices on this page were last checked September 29, 2026 at 3:43 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
JBL HDI-3800: $5,000.00 per pair Discontinued eBay
Pros: 2410H-2 1” Teonex compression driver matched to a custom High-Definition Imaging (HDI) horn geometry achieves exceptional horizontal directivity control, high output capability, and effortless transient response. Triple 8” Advanced Aluminum Matrix woofers deliver deep, authoritative bass extension down to an F3 of 37Hz and F10 of 28Hz with minimal low-frequency compression. Outstanding sensitivity (92dB SPL at 2.83V/1m) and ultra-low THD/multitone distortion allow extremely high undistorted SPL output in large home theater spaces. Measured bass extension of 37Hz (-3dB), with a measured sensitivity of 92dB.
Cons: On-axis frequency response features a narrow upper-frequency elevation around 8-10kHz, performing noticeably smoother when toed out 10-20° off-axis. Vertical directivity handoff across the triple woofer layout creates vertical soundstage height tilt depending on listening distance and ear height. Minimum impedance dips to 3.8 ohms, requiring high-current amplifier stability. Substantial cabinet dimensions and 38kg weight require significant room real estate. Discontinued.
Full JBL HDI-3800 review and specifications →
| Bass Extension (-10dB) | 28Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 37Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 43.3”H x 11.8”W x 16.4”D (1100.5 x 300.0 x 417.8 mm) |
| Drivers | 1 in. 2410H-2 Teonex compression driver with HDI horn, triple 8 in. Advanced Aluminum Matrix cone woofers |
| Impedance | 4 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner) |
| Sensitivity | 92dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.62 |
| Spinorama Preference Score with Perfect Sub | 7.03 |
| Weight | 83.8 lbs (38.0 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Klipsch Forte IV: $5,499.98 per pair Amazon Crutchfield eBay
Pros: Three-way heritage design: a 1” titanium tweeter and 1.75” compression driver for the midrange mated to a 12” woofer, plus a 15” passive radiator for extra bass reinforcement. Genuinely resonance-free cabinet, a clear improvement over the notably boomy, resonant Heresy 4 in the same lineup. Surprisingly wide, expansive soundstage that beat both the Heresy 4 and a KEF LS50 Wireless 2 in direct comparison: images occasionally appeared several feet outside the physical speaker location. Deeper bass extension than the Heresy 4 (F3 of 82Hz, about 10Hz lower). Distortion measures well below 1% at 86dB and stays mostly within 1% even at 96dB. Comes as a factory-matched serial-numbered pair, backed by an unusually generous 10-year warranty. Mostly above 4 ohms impedance, so it’s compatible with AVRs, solid-state, or tube amplifiers. More neutral overall than other Klipsch models the reviewer has tested, making it a reasonable pick for listeners who already like the “Klipsch sound” but want something more balanced. Measured bass extension of 82Hz (-3dB), with a measured sensitivity of 93.8dB.
Cons: Contrary to the classic Klipsch reputation for being forward and bright, this model is actually somewhat recessed in the 1.5-4kHz “presence” region, which can make some tracks sound dull or lacking in detail. A peak around 6kHz reads as sibilant and “painful” when seated exactly on the tweeter axis; sitting a bit above that axis reduces it somewhat. Klipsch’s marketed 99dB sensitivity figure is an in-room rating that assumes 3-6dB of boundary gain: anechoic sensitivity measures closer to 94dB, which the manufacturer does disclose but can still mislead buyers comparing spec sheets. Radiation width isn’t consistent across all frequencies: a noticeable notch around 2-3kHz interrupts otherwise wide dispersion, which can cause a fundamental tone and its harmonics to image in slightly different places in the soundstage. Uses shallow low-pass crossover slopes (despite Klipsch’s steep-crossover marketing, which applies only to the high-pass side), likely contributing to some of the measured dips and possible cone-breakup artifacts. Some compression shows up around the midrange crossover point at very high output (102dB), though likely only audible at extreme volumes. At around $5500/pair, a significant investment, and still needs a subwoofer for material extending below about 50Hz.
Full Klipsch Forte IV review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 82Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 36”H x 16.5”W x 13”D (914.4 x 419.1 x 330.2 mm) |
| Drivers | 1x 12” (305mm) fiber-composite woofer + 15” passive radiator, 1x 1.75” compression driver midrange on horn, 1x 1” titanium compression tweeter on horn |
| Impedance | 8 ohms |
| Sensitivity | 93.8dB (measured average, Erin’s Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic) |
| Spinorama Preference Score | 3.78 |
| Spinorama Preference Score with Perfect Sub | 5.72 |
| Weight | 117.3 lbs (53.2 kg) |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Klipsch Forte IV vs Q Acoustics 5040
- Klipsch Forte IV vs Infinity Primus 360
- Klipsch Forte IV vs KEF Q11 Meta
- Klipsch Forte IV vs Klipsch RP-5000F II
- Klipsch Forte IV vs Polk Reserve R500
- Klipsch Forte IV vs ELAC Debut 3.0 DF63
- Klipsch Forte IV vs Klipsch RP-8000F II
- Klipsch Forte IV vs Emotiva Airmotiv T2+
- See all 47 comparisons