IRS Epsilon vs Legacy Audio Focus HD
The Focus HD's sensitivity is 95 dB against the IRS Epsilon's 86.5 dB. Both share impedance (4Ω), woofer (12"), and ways (4).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersDiscontinued
Estimated price (community-sourced)
$5,000
Around — community and catalog average, updates slowly
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
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 86.5 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 22 Hz - 42 kHz
- Power Handling
- 500W
- Min. Amplifier Power
- 150W
- Max. Amplifier Power
- 500W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 4-way
- Driver Type
- dynamic and planar magnetic
- Driver Size
- 12"
- Driver Count
- 5
- Enclosure Type
- sealed
- Crossover Frequency
- 3.0 kHz
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 470 × 1520 × 410 mm (W × H × D)
- Weight
- 93 kg (205 lbs)
Key Specifications
Sensitivity: 86.5 dB
Impedance: 4Ω
Frequency: 22-42000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions