Infinity IRS Reference Standard 4.5 specifications

Brand: Infinity

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• Type: 3 way, 10 driver loudspeaker system
• Frequency Response: 24Hz to 32kHz
• Sensitivity:
• Crossover frequency: 150, 5000Hz
• Impedance: 4Ω
• Power handling:
• Recommended Amplifier: 100W (minimum)
• Dimensions: 1606 x 662.5 x 362.5 mm
• Weight: 53 kg
• Year: 1978
• Price: USD $4500 (1978)