Realistic Optimus 1B specifications

Brand: Realistic

• Type: 2 way, 3 driver loudspeaker system
• Frequency Response: 20Hz to 20kHz
• Sensitivity:
• Crossover frequency:
• Impedance: 8Ω
• Power handling: 45W
• Recommended Amplifier:
• Dimensions: 580 x 300 x 290 mm
• Weight: 15 kg
• Year: 1975
• Price: USD $89.95 (1975)