Short answer: neither is clean, but they fail differently. The Infinity Reference 253 holds a smooth ±60 degree beamwidth, yet its spinorama shows treble above 4kHz as too hot, a dip around 2kHz and bass shelved down. The Triangle Esprit Antal Ez sums rather nicely in predicted in-room response apart from a resonance around 260Hz, other on-axis resonances and a dip in bass response.
Buy the Infinity Reference 253 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Revel Concerta2 F35 instead.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Infinity Reference 253 | Triangle Esprit Antal Ez | |
|---|---|---|
| Price | $400 per pair used, Discontinued | $1,799 per pair Discontinued |
| Ranked | #60 of 74 in Large Size Floorstanding Speakers | #71 of 74 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) | 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) | 78Hz (measured, Audio Science Review) | 85Hz (measured, Audio Science Review) - low confidence - on-axis curve shows an unusual notch/dip around 250-300Hz for this floorstanding tower |
| Dimensions | 40.3”H x 6.8”W x 12.4”D (1023.6 x 172.7 x 315 mm) | 43.9”H x 11.8”W x 15.7”D (1115.0 x 300.0 x 400.0 mm) |
| Impedance | 6 ohms | 8 ohms nominal (2.7 ohms minimum, measured by Audio Science Review) |
| Drivers | Dual 5.25” (130mm) CMMD™ woofers, 5.25” (130mm) flat-piston CMMD™ midrange, 1” (25mm) CMMD™ tweeter | 2x 6.5” (160mm) fiberglass cone woofers, 1x 6.5” (160mm) natural cellulose midrange, 1x 1” (25mm) titanium dome tweeter |
| Sensitivity | 86.9dB (measured by Audio Science Review; 88dB manufacturer specified) | 90.7dB (2.83V/1m, measured by Audio Science Review) |
| Weight | 39.2 lbs (17.8 kg) each | 98.5 lbs (44.7 kg) |
| Woofer Cabinet | ported, rear | ported, front |
| Spinorama Preference Score | 5.43 (spinorama.org) | 2.76 |
| Spinorama Preference Score with Perfect Sub | 7.31 (spinorama.org) | 5.37 |
| DIY Kit | No | No |
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Prices on this page were last checked October 2, 2026 at 10:18 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.
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The Two Speakers In Full
Infinity Reference 253: $400 per pair used Discontinued eBay
Pros: Horizontal beamwidth of about ±60 degrees is fairly smooth and well controlled. Really amazing value for the performance. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 86.9dB.
Cons: CEA2034 spinorama and predicted in-room response both show elevated treble above 4kHz (“too hot”), a dip around 2kHz, and bass shelved down relative to the midrange. Vertical directivity requires staying at or below the tweeter axis for accurate tonal balance. Distortion at 96dB SPL/1m is broadly elevated above the reviewer’s audibility threshold across much of the midrange. Minimum impedance dips to 4.2 ohms. Discontinued.
Full Infinity Reference 253 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 40.3”H x 6.8”W x 12.4”D (1023.6 x 172.7 x 315 mm) |
| Drivers | Dual 5.25” (130mm) CMMD™ woofers, 5.25” (130mm) flat-piston CMMD™ midrange, 1” (25mm) CMMD™ tweeter |
| Impedance | 6 ohms |
| Sensitivity | 86.9dB (measured by Audio Science Review; 88dB manufacturer specified) |
| Spinorama Preference Score | 5.43 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.31 (spinorama.org) |
| Weight | 39.2 lbs (17.8 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
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Triangle Esprit Antal Ez: $1,799 per pair 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. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 90.7dB.
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 |
| DIY Kit | No |
| Dimensions | 43.9”H x 11.8”W x 15.7”D (1115.0 x 300.0 x 400.0 mm) |
| 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) |
| Spinorama Preference Score | 2.76 |
| Spinorama Preference Score with Perfect Sub | 5.37 |
| Weight | 98.5 lbs (44.7 kg) |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Triangle Esprit Antal Ez vs JBL Studio 590
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- Triangle Esprit Antal Ez vs Bose 901 Series V
- Triangle Esprit Antal Ez vs Sony SS-CS3
- Triangle Esprit Antal Ez vs JBL Stage 2 280F
- Triangle Esprit Antal Ez vs Magnepan LRS+
- Triangle Esprit Antal Ez vs Focal Aria Evo X N°2
- Triangle Esprit Antal Ez vs Polk T50
- See all 12 comparisons