Verity Audio Leonore - Manual (Page 7)

LEONORE OWNER’S MANUAL
R.1.0 January 2009
VERITY AUDIO
PAGE 7
You should always start to position your speakers without
any treatment. If speaker positioning cannot solve standing
waves or reverberation 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 inherent 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 ceiling corners or at the
center of the ceiling-wall intersections. If flutter echoes are
prominent, please consult your dealer to get proper
assistance 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 reverberation time for a room depends upon
room volume, sound frequency, and the type of sound or
reproduced music. The LEONORE performs at its best in
lively listening rooms. Overly damped room will be
detrimental to the LEONORE‟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 resulting 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 having 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 importance, 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.
In an already well-damped room, we recommend utilization
of diffusion instead of damping.
If you choose to work with a specialized room treatment
device, the included manufacturer‟s instructions should be
followed. Ancillary Equipment
Your new LEONORE is an extremely precise instrument that
can clearly reveal the qualities of your upstream equipment.
Your LEONORE performance will be closely related to the
excellence of its associated equipment. Subsequently, it
would be wise to invest in high-quality ancillary equipment,
as your enjoyment will be consequently rewarded.
The LEONORE shows an easy impedance load for most
power amplifiers. It has been evaluated with a wide variety of
power amplifiers and has shown consistent results with
quality solid state and vacuum tube equipment. Superb
performance can be realized from either design.
The uniquely designed and manufactured binding-posts on
the Verity Audio LEONORE
accept banana plugs, spade
connectors or bare wires. For best results, we recommend
the use of spade connectors.
When choosing speaker cables, experimentation is the best
way to find which ones will be the most satisfying in your
installation. Your Verity Audio Dealer can be of assistance in
making recommendations.
Power Handling
The power tolerance of a loudspeaker is correlated to its
maximum voice-coil heat dissipation and to its maximum
cone displacement. These parameters are in turn stimulated
by the time, amplitude and spectral characteristics of the
applied musical energy. At low frequencies, the maximum
cone displacement is normally reached before maximum
voice-coil temperature.
With the LEONORE‟s transducers, because of their superior
ventilation system, the voice-coils will most likely never reach
critical temperatures. But, low frequencies played at high
levels can ask for larger cone displacement than allowed by
the driver suspension. A driver reaching its maximum
displacement will not break unless this situation is
maintained for an inordinate period of time. Before a driver
reaches its maximum displacement, its distortion level will
increase greatly and will become audible. So when a speaker
starts sounding bright and hard or if any “cracking noise” can
be heard, just lower the level until it sounds comfortable
again.
The LEONORE has to be played unexpectedly loud before
any occurrence of compression or distortion appears.