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 557
Quantum 555
Configuration:
3-way bass reflex
2 1/2-way bass reflex
Power-handling capacity:
180 / 340 W
160 / 320 W
Impedance:
4 – 8 ohms
4 – 8 ohms
Frequency response:
20 – 55 000 Hz
22 – 55 000 Hz
Recommended amplifier output: > 30 W
> 30 W
Efficiency (1W/1m):
93 dB
92 dB
Dimensions (WxHxD):
215 x 1070 x 320 mm 215 x 970 x 320 mm
Accessory:
Metal spikes
Metal spikes
Quantum 553
Quantum 551
Configuration:
2-way bass reflex
2-way bass reflex
Power-handling capacity:
90 / 160 W
80 / 140 W
Impedance:
4 – 8 ohms
4 – 8 ohms
Frequency response:
30 – 55 000 Hz
36 – 50 000 Hz
Recommended amplifier output: > 20 W
> 15 W
Efficiency (1W/1m):
91 dB
90 dB
Dimensions (WxHxD):
215 x 360 x 300 mm
162 x 270 x 220 mm
Quantum Center 53
Quantum Center 51
Configuration:
2-way bass reflex
2-way bass reflex
Power-handling capacity:
90 / 160 W
85 / 150 W
Impedance:
4 – 8 ohms
4 – 8 ohms
Frequency response:
34 – 55 000 Hz
36 – 50 000 Hz
Recommended amplifier output: > 20 W
> 20 W
Efficiency (1W/1m):
91 dB
90 dB
Dimensions (WxHxD):
460 x 180 x 290 mm
395 x 160 x 220 mm
GB
9
Summary of Contents for QUANTUM 557
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