Infinity IRS

Data

General

• Manufacturer: Infinity
• Model: IRS
• Years of manufacture: 1980-1987
• Manufactured in:
• Color:
• Dimensions: Bass Columns: 520 x 2280 x 730 mm, Mid-High Panels: 1190 x 2280 x 430 mm (W x H x D).
• Weight: 681 Kg (complete system)
• Original price approx.: 175.000,- DM

Technical Data

• Construction: 3-way, bass columns closed, mid-high panels dipole, partially active
• drivers:
  • Low frequency: 6x 30 cm

Midrange: 12x magnetostat (EMIM)

• • tweeter: 36x magnetostat (EMIT), 12 of them on the rear side
• Power handling (nominal/music): recommended power 100-300 watts, power built-in amplifier of bass columns: 2000 watts RMS.
• Efficiency:
• Frequency Response: 15 - 45,000 Hz.
• Transition Ranges: 70 (Variable)/4500 Hz.
• Impedance:

Special Features

• active bass columns with separate active crossover

Remarks

• Originally the IRS was only intended as an internal reference at Infinity.
• But there were so many requests for it that Infinity decided to sell the IRS to people with the money to buy it.
• The IRS was the most expensive speaker system in the world when it was released.