Yamaha NS6490 (Pr.) User Manual

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The front cover is fastened to the enclosure at four points, 
and can be removed if desired. To remove the cover, hold 
on to both sides and slowly pull straight away from the 
speaker. To reattach, line up the four pegs on the inside 
surface of the cover with the four corresponding holes on 
the speaker and push gently.

When the cover is removed, take care not to touch the speaker 
units with your hands or to exert excessive force with tools.

Type ............... 3-way acoustic suspecsion speaker system

magnetic shielding type

Driver ...........................................20 cm (8") cone woofer

10 cm (4") cone mid-range

2.2 cm (about 7/8") balanced dome tweeter

Frequency response ................................. 45 Hz – 23 kHz
Nominal impedance ............................................... 8 ohms
Nominal input power ................................................ 70 W
Maximum input power ........................................... 140 W
Sensitivity ................................................90 dB/2.83 V/m
Crossover frequency ................................. 2.5 kHz, 8 kHz
Dimensions (W x H x D) ..................267 x 411 x 336 mm

(10-1/2"x 16-1/5" x 13-1/5")

Weight........................................................ 6 kg (13.2 lbs)

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