Infinity Kappa 6.1-II
The Infinity Kappa 6.1-II is a three-way speaker system from the Kappa line. It was sold as a floor-standing tower, though some listings describe it as a high-end bookshelf system. Documentation on this "Series II" revision is thin. What survives points to a well-regarded, muscular-sounding speaker from the 1990s.
The most concrete facts come from a technical sheet dated September 1998 and a period review. Audio Review (December 1993) ran a piece on the "Kappa 6.1K," which confirms the model was on the market by late 1993. The technical sheet lists a nominal impedance of 6 ohms and a power rating of 30 to 200 watts RMS. A YouTube rundown of the Series II echoes those figures. A craigslist listing adds some driver detail. The woofers use IMG cones described as 10% lighter and 5% harder than conventional cones, with a Φ 133×19mm magnet and cotton thread wire in the magnetic circuit.
The midrange driver is the best-documented part of the Kappa 6.1-II. It is the Polydome. The part (No. 902-5793 / 302794-001) is a known replacement item, and the diaphragm is shared across several Kappa models - 6.1/6.2i, 7.1/7.2i, 8.1/8.2i, and 9.1/9.2i - so the driver was used widely in the lineup. The other common repair item is the woofer foam surround, and replacement kits are sold specifically for the 8-inch woofers in this model. Foam rot is the predictable failure point of a 30-year-old speaker. Dedicated repair kits exist, which suggests enough of these are still out there to be worth fixing.
Asking prices in recent listings have ranged from $159 to $450, with a Ukrainian listing at 21,000 грн. A replacement speaker foam surround was listed at $13.95. No original retail price, frequency response, or sensitivity figures are documented for this specific model.
Known Specifications
- Type: 3-way speaker system (floor-standing tower)
- Nominal impedance: 6 ohms
- Power rating: 30–200 watts RMS
- Midrange: Polydome driver (Part No. 902-5793 / 302794-001)
- Woofer: 8-inch with IMG cone (10% lighter, 5% harder than conventional cones)
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