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MAINTENANCE
The surface is best cleaned with a mild household cleaner. On no account use furniture polish or similar
products.
SPECIFICATIONS
Subject to technical change.
Quantum 657
Quantum 655
Configuration:
3-way bass reflex
2 1/2-way bass reflex
Power-handling capacity:
200 / 350 W
180 / 300 W
Impedance:
4 – 8 ohms
4 – 8 ohms
Frequency response:
20 – 50 000 Hz
22 – 50 000 Hz
Recommended amplifier output:
> 30 W
> 30 W
Efficiency (1W/1m):
93 dB
92 dB
Dimensions (WxHxD):
202 x 1080 x 316 mm
202 x 995 x 316 mm
Accessory:
Metal spikes
Metal spikes
Quantum 653
Quantum Center 63
Configuration:
2-way bass reflex
2-way bass reflex
Power-handling capacity:
100 / 180 W
100 / 180 W
Impedance:
4 – 8 ohms
4 – 8 ohms
Frequency response:
30 – 50 000 Hz
32 – 50 000 Hz
Recommended amplifier output:
> 20 W
> 20 W
Efficiency (1W/1m):
91 dB
91 dB
Dimensions (WxHxD):
202 x 350 x 280 mm
490 x 175 x 280 mm
GB
9
Summary of Contents for QUANTUM 657
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