Yamaha NS-6490 3-Way Bookshelf Speakers (Pair) - Manual (Page 3)

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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.
Note
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)
REMOVING THE FRONT COVER
SPECIFICATIONS
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