Realistic Optimus 900 specifications

Brand: Realistic

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• Type: 3 way, 3 driver loudspeaker system
• Frequency Response: 50Hz to 20kHz
• Sensitivity: 90dB
• Crossover frequency:
• Impedance: 8Ω
• Power handling: 100W
• Recommended Amplifier:
• Dimensions: 756 x 355 x 275 mm
• Weight: 15 kg
• Year: 1986
• Price: USD $149.95 (1987)