Yamaha NS-9900 - Manual (Page 5)

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The front cover is fastened to the enclosure at six 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 six holes on the inner surface of the cover
with the six corresponding pegs 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 bass reflex speaker system
Magnetic shielding type
Driver........................................... 16 cm cone type woofer x 2
13 cm cone type midrange
2.5 cm hard dome type tweeter
Impedance ........................................................................ 6
Ω
Frequency response .......................45 Hz to 35 kHz ( – 10 dB)
to 100 kHz ( – 30 dB)
Rated input power ........................................................... 50 W
Maximum input power ................................................... 200 W
Sensitivity ....................................................... 91 dB/2.83 V/m
Crossover frequency .........................................800 Hz, 3 kHz
Dimensions (W x H x D)
Speaker cabinet..................................220 x 1157 x 335 mm
Including stands..................................310 x 1170 x 371 mm
Weight ......................................................................... 25.5 kg
• Specifications are subject to change without notice due
to product improvements.
• Care should be taken not to exceed the input power
values noted above.
REMOVING THE FRONT COVER
Note
SPECIFICATIONS
Taking care of the speaker
When you wipe this unit, do not use chemical solvents (ex.
alcohol or thinner etc.); this might damage the finish. Use a
clean, dry cloth. For heavy dirt, dampen a soft cloth in the
water, wring it out, and then clean this unit up with the cloth.
This symbol mark is according to the EU directive
2002/96/EC.
This symbol mark means that electrical and electronic
equipment, at their end-of-life, should be disposed of
separately from your household waste.
Please act according to your local rules and do not dispose
of your old products with your normal household waste.