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Infinity speakers REF 1270
MRP: €131.88 Offer Price: €85.79
The Infinity Kappa 1200W 12″ Subwoofer delivers deep, accurate, and powerful bass in a flexible design. Featuring Infinity’s Selectable Smart Impedance (SSI) switch, it allows you to choose between 2Ω or 4Ω operation for seamless amplifier matching. With a rugged polypropylene cone, long-excursion design, and high-roll rubber surround, this subwoofer produces tight, controlled lows with precision and durability.
Description
Key Specifications
| Spec | Value |
|---|---|
| Size | 12-inch Crutchfield+2Audio Express+2 |
| Impedance | Switchable: 2 or 4 Ω via SSI switch Crutchfield+2Crutchfield+2 |
| Power Handling (RMS) | 275 watts RMS Crutchfield+1 |
| Peak Power Handling | 1100 watts peak Crutchfield+1 |
| Frequency Response | ~ 25 Hz – 175 Hz Crutchfield+1 |
| Sensitivity | 93 dB (2.83 V @ 1 meter) Crutchfield+1 |
| Cone Material | Polypropylene Crutchfield+1 |
| Surround Material | Nitrile rubber (or rubber) Audio Express+1 |
| Basket / Frame | Stamped steel basket Crutchfield+1 |
| Mounting/Top-Mount Depth | ~ 6-1/2 inches Crutchfield+1 |
| Cut-out Diameter | Approx. 11-5/16 inches (≈ 11.31″) Crutchfield+2Crutchfield+2 |
| Thiele-Small / Acoustic Parameters: | |
| Free Air Vas | ~ 61.2 litres (in 2 Ω mode) Crutchfield+1 |
| Fs (resonant frequency) | ~ 31.9 Hz (2 Ω) / ~ 32.4 Hz (4 Ω) Crutchfield |
| Qts | ~ 0.52 (2 Ω) / ~ 0.58 (4 Ω) Crutchfield |
| Xmax (max excursion) | ~ 10.25 mm Crutchfield+1 |
Enclosure Recommendations
-
Sealed box: about 0.75 cubic feet internal volume; gives tighter bass response. Crutchfield+1
-
Ported box: about 2.5 cubic feet with a 4-inch diameter port that is ~11.7 inches long, tuned to ~30 Hz. Crutchfield+1
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Free-air mounting (infinite baffle) is possible, though power handling is reduced (~half) in that configuration. Crutchfield
Features & Build Highlights
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The SSI (Selectable Smart Impedance) switch is a key feature—it allows configuration flexibility depending on your amplifier setup. Crutchfield+2Audio Express+2
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High-roll surround improves suspension of the cone, allowing greater excursion and more cone area, which helps with deeper bass and better control. Audio Express
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Cone design proprietary to Infinity, aiming for stiffness and durability. Audio Express+1
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Long-excursion design to move more air for deeper bass. Audio Express
What to Consider / Trade-offs
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While 275 W RMS is decent power, pushing peak power should be done carefully—amplifier matching is important.
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For optimal output and sound, enclosure design and tuning (ported vs sealed) will affect performance significantly.
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Depth (6.5″) is somewhat large; make sure your enclosure or mounting space can accommodate it.
1 review for Infinity speakers REF 1270
Infinity speakers REF 1270
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