Frequency Characteristics; Troubleshooting - Yamaha ns-p285 Owner's Manual

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  • ENGLISH, page 1
• If you replace the front speakers (NS-B285) with
other speakers, you will need to re-adjust the
subwoofer's volume.
• The frequency characteristics graphs below show
how the subwoofer and front speakers work
together to provide a full-range sound.

Frequency characteristics

The following graph shows the
frequency characteristics of the
subwoofer (NS-SW280).
100 dB
90
80
70
60
50
40
20
50
100
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.
Issue
There's no sound.
The sound is very quiet.
■ Subwoofer (NS-SW280)
Issue
The POWER switch is set
to ON but the subwoofer
doesn't work.
There's no sound.
The subwoofer is too
quiet.
5
En
The following graph shows the combined frequency characteristics of
the subwoofer (NS-SW280) and front speakers (NS-B285), and center
speaker (NS-C385).
100 dB
200
500 Hz

Troubleshooting

Possible cause
The speaker cables are not
connected properly.
The speaker cables are not
connected properly.
Possible cause
The power cable is not connected
properly.
The VOLUME control is set to 0. Turn up the VOLUME control.
The subwoofer cable is not
connected properly.
The source material doesn't
contain much bass.
Bass sounds are being cancelled
out by standing waves.
90
80
70
NS-SW280
60
NS-B285
50
40
20
50
100
200
500 Hz
Make sure the speaker cables are connected properly.
Make sure the speaker cables are connected properly:
L (left) to L, R (right) to R, "+" to "+" and "–" to "–".
Set the POWER switch to OFF, then make sure the power
cable is connected properly.
Make sure the subwoofer cable is connected properly.
Try playing source material that contains more bass.
Reposition the subwoofer, or break up parallel wall surfaces
by placing bookshelves or other large objects along the wall.
100 dB
90
80
70
NS-SW280
60
NS-C385
50
40
20
50
100
200
Remedy
Remedy
500 Hz

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