Infinity Kappa 6.1i

Name: Infinity Kappa
Brand: Infinity

A 3-way floorstanding speaker system with advanced driver materials and precision crossover tuning,

Overview

The Infinity Kappa 6.1i is a 3-way, 3-speaker bass reflex floorstanding system from the "New Kappa" series. Infinity priced it at ¥120,000 per unit around 1993. The cabinet is a column-shaped polygon made of solid oak and oak veneer. The baffle is 26.5mm thick, which cuts down internal standing waves. A rear-firing bass reflex port sits at the bottom. The speaker supports bi-amplification and has level adjustments for midrange and tweeter output.

Specifications

Frequency response	45 Hz to 35 kHz ± 2 dB
Input impedance	6 Ω
Sensitivity	89dB/2.8Vrms
Maximum recommended amplifier power	150W
Crossover frequencies	500 Hz, 4.5 kHz
External dimensions (HxWxD)	940 x 305 x 252 mm
Weight	18.6kg
Drivers	20 cm (8") cone woofer; 7.6 cm (3") poly dome midrange; EMIT-R planar tweeter

Design

The woofer uses an IMG (Injection Molded Graphite) cone, a composite of graphite fiber and polypropylene molded under high pressure. It comes out 10% lighter and 5% stiffer than previous versions. The midrange driver has a 7.6 cm poly dome diaphragm, 0.3mm thick, with an aluminum mesh diffuser on the rear to manage rear wave interference. The high-frequency driver is a planar EMIT-R (Electromagnetic Induction Tweeter) with a Kapton film diaphragm and a photo-etched voice coil. The crossover was designed using MLSSA software and fine-tuned in an anechoic chamber. It uses selected components and special-specification internal wiring. The cabinet is anti-magnetic, so it suits AV setups, and it has removable spikes for room tuning.

Context

The Kappa 6.1i belonged to the "New Kappa" series, which aimed to bring advanced Infinity loudspeaker technologies to a more accessible market segment. It shared design philosophies with the higher-end Kappa 9. The Kappa series also included automotive loudspeakers. The 6.1i was available in a special-order Black Oak finish.