This page lists all 4 Infinity speakers ranked on this site across passive speakers and subwoofers. Each model is shown in the category where it competes, with its current rank and the size of that ranking.
Use the category position rather than the brand name alone: speakers from the same manufacturer can perform very differently by size, price and product family.
Discontinued Infinity Models
Still ranked, and often still worth buying used, but no longer in production. Check availability before planning around one of these.
Large Size Bookshelf Speakers
Ranked #54 of 84 in Large Size Bookshelf Speakers - Infinity IL10: $160 used, Discontinued
Pros: Impressively flat for a budget bookshelf. Predicted in-room response is good aside from a bit of excess energy here and there. Distortion at 96dB SPL/1m stays low and controlled outside two narrow resonance-driven peaks.
Cons: Resonances at 600 and 5khz, which show up as distinct distortion spikes at 96dB SPL/1m in the same frequency regions. Discontinued.
Full Infinity IL10 review and specifications →
| Bass Extension (-10dB) | 44Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 59Hz (measured, Audio Science Review) |
| Dimensions | 15.6"H x 8.5"W x 11.5"D (397.0 x 216.0 x 292.0 mm) |
| Discontinued | Yes |
| Drivers | 6.5" (165mm) woofer |
| Impedance | 6 ohms |
| Sensitivity | 86dB (measured, Audio Science Review) |
| Weight | 14.3 lbs / 6.5 kg |
| Woofer Cabinet | ported, rear |
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- Reviews, Comparisons and Sound Samples
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Large Size Floorstanding Speakers
Ranked #30 of 54 in Large Size Floorstanding Speakers - Infinity Primus 360: $650.00 Discontinued
Pros: A three-way tower from 2005 (two 6.5” mid-woofers, a 4” mid-range, and a 0.75” dome tweeter, 8 ohms nominal) that holds up remarkably well by modern measurement standards: on-axis linearity is within about ±2dB, and the listening window stays consistent out to roughly ±30° horizontal and ±10° vertical off the mid-range axis. Horizontal directivity is well controlled out to about ±75° before tonality starts to drift, meaning the reflected sound in a room stays close in character to the direct sound - a speaker that takes EQ well without fighting itself. Harmonic distortion measures low at both 86dB and 96dB, and multitone distortion stays under the reviewer’s 3% threshold. Silky, smooth midrange with a rich lower-midrange/upper-bass character. No mechanical issues or surround degradation found in a 20-year-old pair, and a second unit measured within about 1-1.5dB of the first, suggesting good long-term consistency for the design.
Cons: Manufacturer-spec sensitivity of 93dB runs about 3-4dB optimistic versus the measured 89.4dB average. Bass output drops off fairly quickly below about 50Hz in-room (F3 53Hz, F10 37Hz), so a subwoofer is needed for real low-end extension. Resonances show up around 170Hz, 220Hz, and 350Hz. On-axis, the lower treble can sound a bit bright or sibilant when the speaker is aimed directly at the listener; toeing out about 10-15° (rather than the more extreme 30°) gave the best balance, and some sidewall acoustic absorption further tamed a 4-5kHz peak. Placed close to the rear wall, bass gets boomy - pulling the speakers out about a foot resolves most of it, with roughly 1.5 feet from the wall as a good compromise between bass character and typical room aesthetics. Straying beyond about 25° above or below the mid-range axis introduces audible suckout. No longer in production, so it’s a used/secondhand purchase only. Discontinued.
Full Infinity Primus 360 review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 53Hz (measured, Erin's Audio Corner) |
| Crossovers | 350Hz & 3.3kHz, 24dB/octave |
| Dimensions | 39"H x 8-1/8"W x 13-7/8"D (990 x 208 x 330mm) |
| Discontinued | Yes |
| Drivers | Two 6.5" mid-woofers, 4" mid-range, 0.75" dome tweeter |
| Frequency Response | 38Hz - 20kHz (±3dB, Manufacturer specified) |
| Impedance | 8 ohms nominal, 3.5 ohms minimum (measured, Erin's Audio Corner) |
| Recommended Power | 10-200W |
| Sensitivity | 89.4dB (measured, Erin's Audio Corner; 93dB manufacturer specified) |
| Weight | 48.5 lbs (48.5 lbs / 22 kg) each |
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Ranked #46 of 54 in Large Size Floorstanding Speakers - Infinity Reference 253: $400 used, Discontinued
Pros: Horizontal beamwidth of about ±60 degrees is fairly smooth and well controlled. Really amazing value for the performance.
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) |
| Dimensions | 40.3"H x 6.8"W x 12.4"D (1023.6 x 172.7 x 315 mm) |
| Discontinued | Yes |
| 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) |
| Weight | 39.2 lbs / 17.8 kg each |
| Woofer Cabinet | ported, rear |
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Medium Powered Home Subwoofers (30-75 lbs)
Ranked #57 of 137 in Medium Powered Home Subwoofers (30-75 lbs) - Infinity Speakers REFERENCE SUB R12: $500 Discontinued
Pros: 12-inch ported with 300W RMS. Slipstream tuned-port technology delivers optimized low-frequency sound. Seamless integration and powerful performance for budget-conscious buyers. Good home theater value option.
Cons: Discontinued.
Full Infinity Speakers REFERENCE SUB R12 review and specifications →
| CEA-2010-A Average (40-80Hz) | 112.6 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 18.7"H x 15.2"W x 16.8"D (476.0 x 385.1 x 426.0 mm) |
| Discontinued | Yes |
| Drivers | 12" (305mm) driver |
| Enclosure | ported, rear |
| Frequency Response | 29-150Hz |
| Measurement Source | ErinsAudioCorner |
| Output SPL at 15 Hz | 77.0 dB |
| Output SPL at 20 Hz | 90.6 dB |
| Output SPL at 25 Hz | 98.8 dB |
| Output SPL at 31.5 Hz | 106.3 dB |
| Output SPL at 40 Hz | 107.6 dB |
| Output SPL at 50 Hz | 112.3 dB |
| Output SPL at 63 Hz | 115.8 dB |
| Output SPL at 80 Hz | 114.6 dB |
| Output SPL at 100 Hz | 113.2 dB |
| Output SPL at 125 Hz | 111.7 dB |
| Power Output (Watts) | 300W RMS |
| Warranty | 5/2 |
| Weight | 40.1 lbs / 18.2 kg |
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