LAKMÉ
R2.0
OWNER’S MANUAL
June 2020
VERITY AUDIO
PAGE 6
Room Treatment
The LAKMÉ gives its best performance in an average-furnished domes-
tic listening room. It requires a minimum of room treatment. Before
investing in room treatment we strongly recommend you to take the
time to listen and get familiar with your speakers. The LAKMÉ has pro-
ven to be a standalone loudspeaker that rarely needs to be acousti-
cally corrected. A good room placement is usually the most effective
approach.
You should always start to position your speakers without any treat-
ment. If speaker positioning cannot solve standing waves or reverbera-
tion problems read the following.
The principal design factor for internal acoustics of a room, in addition
to shape and size, is the control of sound absorption and reflection.
The total absorption required to give optimum reverberation is inhe-
rent to your room characteristics, i.e., which surfaces are absorptive
or reflective, the area of these surfaces and the selection of acoustical
materials.
A flutter echo is a rapid (usually regular) succession of reflected pulses
resulting from a single pulse. Clapping your hands while walking in the
room can easily identify them. They are frequently located at the cei-
ling corners or at the center of the ceiling-wall intersections. If flutter
echoes are prominent, please consult your dealer to get proper assis-
tance on that matter.
The reverberation in the room is the resulting tendency for sound level
in the room to persist after direct sound ceases. The optimum reverbe-
ration time for a room depends upon room volume, sound frequency,
and the type of sound or reproduced music. The LAKMÉ performs at its
best in lively listening rooms. Overly damped room will be detrimental
to the LAKMÉ’s performance. Optimum reverberation time (at 500 to
1,000 Hz) should be between 0.4 and 0.6 second.
Standing waves are reflections from opposing parallel surfaces resul-
ting in serious peaks in the reverberation-time / frequency curve. In
properly proportioned rooms, resonances can be effectively reduced
and standing waves practically eliminated by introducing numerous
sound treatment devices. The object is to prevent sound reflection
from going back to the point of origin until after several reflections
and/or after being considerably attenuated. Once again if you feel ha-
ving a standing wave problem in your room, please consult your dealer
to get proper assistance on this matter.
Early reflections are the first sound reflections heard at the listening
position. They are usually intense and annoying. In order of impor-
tance, they usually come from the floor, the sidewalls and the ceiling.
Placing diffusors or absorbers at their image location can either control
them. Your dealer can be of good assistance in properly helping you
with this matter.
Fig 1
