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IRS Epsilon

Name: Infinity IRS Epsilon
Brand: Infinity

Infinity

IRS Series1995 – Present

LoudspeakersFloorstanding SpeakersDiscontinued

Estimated price (community-sourced)

$5,000

About the IRS Epsilon

The Infinity IRS Epsilon is a four-way, five-driver floorstanding loudspeaker system with a 12-inch IMG woofer, L-EMIM lower midrange, EMIM midrange, and two EMIT tweeters, including one rear-firing unit. Introduced around 1995, it uses a dedicated servo control unit for the woofer and is designed for bi-amplification, with the bass and mid/high sections driven separately. It offers a frequency response from approximately 22 Hz to 42 kHz with crossover points at 150 Hz, 500 Hz, and 3 kHz. The cabinet weighs about 93 kg (205 lbs) per speaker and sensitivity is approximately 86-87 dB/W/m with a nominal impedance of 4 ohms, requiring amplifiers delivering 150-500 watts per channel.

Specifications

Key Specifications

Sensitivity: 86.5 dB

Impedance: 4Ω

Frequency: 22-42000 Hz

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