Placement; Subwoofer Orientation - Yamaha NS-SW901 Owner's Manual

Since the low-end frequencies of audio signals feature long wavelengths, they are almost non-directional to human ears.
The super-bass range does not create a stereo image. Therefore, a single subwoofer may be enough to produce a high-
quality super-bass sound. However, using two subwoofers (similarly to L and R front speakers) can enhance your acoustic
experience.

Subwoofer orientation

Place the subwoofer as shown in fig.
: subwoofer : front speaker
A
Using one subwoofer
Place the subwoofer on the outside of either the left or right
front speaker.
B
Placing the subwoofer in between the left
and right front speakers
If you are placing the subwoofer in between the left and
right front speakers, position it slightly at an angle toward
the wall for better effect.
Notes
• This unit features a magnetically shielded design. However, there is still a chance that placing it too close to a CRT-type
TV set might impair picture color. Should this happen, move this unit away from the TV set.
• If the speaker volume is very loud, furniture or window glass may resonate and the subwoofer itself may vibrate. In this
case, lower the volume level. To limit resonance, use a thick curtain or similar cloth that tends to absorb sound vibrations
effectively. Also, changing the subwoofer position may be helpful.
5
En

PLACEMENT

, or for the optimum effect.
A B C
or
or
C
Using two subwoofers
Place the subwoofers on the outside of each front speaker.
Note
The placement shown in the figure below is also
possible. However, if the subwoofer system is placed
directly facing a wall, the bass effect may suffer due to
phase cancellation caused by the interference between
the direct and reflected sounds. To prevent this from
happening, place the subwoofer system at an angle.
(Figures , , and
A B
There may be a case that you
cannot obtain enough super-
bass sound from the subwoofer
due to standing waves.
).
C