Quantum Reference Standard


Main Details
Maker Infinity Brand
Additional Model ID QRS
Form Factor Floorstanding
Signal Path Passive Hardware
Made In United States
Date Produced 1977 to 1982
(H × W × D)
Frequency Response 18Hz-32kHz ±2dB
Notes *ElectroMagnetic Induction Tweeter
**ElectroMagnetic Induction Ribbon Midrange (Strathern)

Predecessor to the legendary IRS.

Option: Walnut or Rosewood veneer
Additional Specifications
Tweeter (Front) 13x EMIT*
Tweeter (Rear) 7x EMIT*
Midrange 3x EMIRM**
Woofer 15" Infinity/Watkins Dual-Drive
Recommended Amplifier Power Bass: 150W+ Mid/Treble: 100W+
Crossover Points 100Hz, 4kHz Electronic, 1st Order
Horizontal Dispersion -2dB in 60°
MSRP $6500
Input RCA (Phono, Cinch)
Output RCA (Phono, Cinch)
Input Binding Post (Universal)
Parameter: Tweeter Level
Control Type: Rotary Pot
Parameter: Tweeter Crossover Frequency
Parameter: Rear Tweeter
Control Type: Toggle Switch
Parameter: Midrange Level
Control Type: Rotary Pot
Parameter: Midbass Coupler Level
Control Type: Rotary Pot


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