Short answer: the Klipsch Forte IV for better sound quality, the Triangle Esprit Antal Ez for the lower price. The Klipsch Forte IV ranks #41 of 71 floorstanding speakers at $5499.98. The Triangle Esprit Antal Ez ranks #69 at $1799, $3700.98 cheaper.
What the Klipsch Forte IV offers: 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. Watch for: 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 $5,000/pair, a significant investment, and still needs a subwoofer for material extending below about 50Hz.
What the Triangle Esprit Antal Ez offers: Predicted in-room response sums rather nicely aside from the resonance and bass issues. Horizontal beamwidth of about ±50 degrees is reasonably controlled. Watch for: Resonance around 260Hz and a number of other resonances show up on-axis, along with a dip in bass response. Two distinct distortion sources - one around 250-300Hz, another around 3-4kHz - already cross the reviewer’s audibility threshold even at moderate output, and get much worse at 96dB SPL/1m, where distortion broadly exceeds 50% relative level across large parts of the spectrum. Directivity is not great overall. The reviewer does not recommend it.
Buy the Klipsch Forte IV if sound quality matters more than the price. Buy the Triangle Esprit Antal Ez if the price matters more than sound quality.
If sound quality matters at all to you, skip the Triangle Esprit Antal Ez. It ranks near the bottom of the 71 floorstanding speakers, so look higher up the list instead.
Specifications Side By Side
| Klipsch Forte IV | Triangle Esprit Antal Ez | |
|---|---|---|
| Price | $5,499.98 | $1799 Discontinued |
| Ranked | #41 of 71 in Large Size Floorstanding Speakers | #69 of 71 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 62Hz (measured, Audio Science Review) - low confidence - on-axis curve shows an unusual notch/dip around 250-300Hz for this floorstanding tower |
| Bass Extension (-3dB) | 82Hz (measured, Erin’s Audio Corner) | 85Hz (measured, Audio Science Review) - low confidence - on-axis curve shows an unusual notch/dip around 250-300Hz for this floorstanding tower |
| Sensitivity | 93.8dB (measured average, Erin’s Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic) | 90.7dB (2.83V/1m, measured by Audio Science Review) |
| 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 | 2x 6.5" (160mm) fiberglass cone woofers, 1x 6.5" (160mm) natural cellulose midrange, 1x 1" (25mm) titanium dome tweeter |
| Weight | 117.3 lbs / 53.2 kg | 98.5 lbs / 44.7 kg |
| Woofer Cabinet | passive radiator | ported, front |
| Impedance | 8 ohms | 8 ohms nominal (2.7 ohms minimum, measured by Audio Science Review) |
| Dimensions | 36"H x 16.5"W x 13"D (914.4 x 419.1 x 330.2 mm) | 43.9"H x 11.8"W x 15.7"D (1115.0 x 300.0 x 400.0 mm) |
| Discontinued | - | Yes |
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Prices on this page were last checked August 25, 2026 at 6:19 AM 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.
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The Two Speakers In Full
Klipsch Forte IV: $5,499.98 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.
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 $5,000/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) |
| 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) |
| Weight | 117.3 lbs / 53.2 kg |
| Woofer Cabinet | passive radiator |
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Triangle Esprit Antal Ez: $1799 Discontinued eBay
Pros: Predicted in-room response sums rather nicely aside from the resonance and bass issues. Horizontal beamwidth of about ±50 degrees is reasonably controlled.
Cons: Resonance around 260Hz and a number of other resonances show up on-axis, along with a dip in bass response. Two distinct distortion sources - one around 250-300Hz, another around 3-4kHz - already cross the reviewer’s audibility threshold even at moderate output, and get much worse at 96dB SPL/1m, where distortion broadly exceeds 50% relative level across large parts of the spectrum. Directivity is not great overall. The reviewer does not recommend it. Discontinued.
Full Triangle Esprit Antal Ez review and specifications →
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) - low confidence - on-axis curve shows an unusual notch/dip around 250-300Hz for this floorstanding tower |
|---|---|
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) - low confidence - on-axis curve shows an unusual notch/dip around 250-300Hz for this floorstanding tower |
| Dimensions | 43.9"H x 11.8"W x 15.7"D (1115.0 x 300.0 x 400.0 mm) |
| Discontinued | Yes |
| Drivers | 2x 6.5" (160mm) fiberglass cone woofers, 1x 6.5" (160mm) natural cellulose midrange, 1x 1" (25mm) titanium dome tweeter |
| Impedance | 8 ohms nominal (2.7 ohms minimum, measured by Audio Science Review) |
| Sensitivity | 90.7dB (2.83V/1m, measured by Audio Science Review) |
| Weight | 98.5 lbs / 44.7 kg |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
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