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Frequency characteristics
The following graph shows the frequency
characteristics of the subwoofer (NS-SW280).
The following graph shows the combined frequency
characteristics of the subwoofer (NS-SW280) and
front speakers (NS-B280).
If this product doesn’t work as expected, look for a possible cause below. If the issue you are experiencing is not
listed, or you cannot resolve it after reading through these instructions, disconnect the power cable and contact an
authorized Yamaha dealer or service center.
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Subwoofer (NS-SW280)
■
Front, center, and surround speakers (NS-B280)
Type
........... Full-range acoustic-suspension speaker system
non-magnetic shielding type
Driver
........................................6.5 cm (2-1/2") cone speaker
Nominal input power
......................................................30 W
Maximum input power
.................................................. 80 W
Impedance
...........................................................................6
Ω
Frequency response
....................................... 110 Hz–40 kHz
Sensitivity ...............................................
81 dB/2.83 V, 1 m
Dimensions (W x H x D)
.......................... 90 x 90 x 109 mm
(3-1/2" x 3-1/2" x 4-1/4")
Weight
...............................................................0.45 kg (1 lbs.)
■
Subwoofer (NS-SW280)
Type
..................... Advanced Yamaha Active Servo Technology
Driver
...........................................16 cm (6-1/2") cone woofer
non-magnetic shielding type
Output power
....................... 50 W (100 Hz, 5 Ω, 10% THD)
Dynamic power
...................................................... 100 W, 5 Ω
Input impedance
................ INPUT (1P RCA pin jack): 10 kΩ
Frequency response
..........................................30 Hz–160 Hz
Input sensitivity
..........................INPUT (1P RCA pin jack):
80 mV (50 Hz, 50 W/5
Ω)
Power supply
U.S.A. and Canada models .......................AC 120 V, 60 Hz
Australia model..........................................AC 240 V, 50 Hz
U.K. and Europe models ...........................AC 230 V, 50 Hz
China, Korea, Asia, and General models
................ AC 110-120/220-240 V, 50/60 Hz
Dimensions (W x H x D)
......................262 x 264 x 316 mm
(10-3/8" x 10-3/8" x 12-1/2")
Weight
............................................................. 6.9 kg (15.2 lbs.)
Specifications are subject to change without notice.
20
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500 Hz
40
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100 dB
20
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100
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500 Hz
40
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60
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100 dB
NS-SW280
NS-B280
Troubleshooting
Issue
Possible cause
Remedy
There’s no sound.
The speaker cables are not
connected properly.
Make sure the speaker cables are connected properly.
The sound is very quiet.
The speaker cables are not
connected properly.
Make sure the speaker cables are connected properly:
L (left) to L, R (right) to R, “+” to “+” and “–” to “–”.
Issue
Possible cause
Remedy
The POWER switch is set
to ON but the subwoofer
doesn’t work.
The power cable is not connected
properly.
Set the POWER switch to OFF, then make sure the power
cable is connected properly.
There’s no sound.
The VOLUME control is set to 0. Turn up the VOLUME control.
The subwoofer cable is not
connected properly.
Make sure the subwoofer cable is connected properly.
The subwoofer is too
quiet.
The source material doesn’t
contain much bass.
Try playing source material that contains more bass.
Bass sounds are being cancelled
out by standing waves.
Reposition the subwoofer, or break up parallel wall surfaces
by placing bookshelves or other large objects along the wall.
Specifications
