Niles Audio CM5HD Speaker System User Manual


 
However, as you move the speaker far-
ther away from the listener, both the
reflected and the direct sound will dissi-
pate, requiring more power from your
surround sound amplifier channels. If the
surround sound system you are using has
a small five or ten watt amplifier for the
rear speakers, stay within five to eight feet
of the listening location. If you are using a
25 to 50 watt amplifier you can mount
the speakers 10 to 15 feet away from the
listening location and still achieve reason-
ably high volume levels.
In large or unusually shaped rooms, using
multiple speakers might be the only way to
achieve a good effect. In large or unusual-
ly shaped rooms this might be the only
way to achieve a good effect. If you like to
listen to music surround modes which
emulate concert hall acoustics, more than
two surround speakers will prove extraor-
dinarily effective
(See Figure 6). With
Niles CM5HD, CM6HD and CM8HD
loudspeakers it is easy to add another pair
without affecting the decor of the room.
However, you will need to use a much
more powerful amplifier than that which
is built into a typical surround sound
receiver or amplifier. Niles makes a num-
ber of Systems Integration Amplifiers with
proprietary features that make them
uniquely suited to enhance a good sur-
round sound system. Consult your local
Niles dealer for more information.
The Boundary Effect
Corners can affect the bass response of the
speaker powerfully! This is called the
boundary effect. You will emphasize par-
ticular bass frequencies and cancel out
other bass frequencies when you place
speakers close to the wall/ceiling bound-
ary or a corner wall boundary. This can
make the speaker sound excessively
boomy and inaccurate to some listeners,
while to others it just seems like more bass
sound. A good rule of thumb is if you
always listen to your current pair of speak-
ers with the bass turned up, you’ll enjoy
corner placement. If you keep your tone
controls at neutral, try to keep the speak-
ers at least two or three feet from the
boundaries of the room.
8
Speaker Placement
Figure 5
Varying Listening Position
Figure 6
Surround Sound