Vienna Acoustics Beethoven Concert Grande - Manual (Page 5)

Important Tip:
The distance between speakers is interrelated to the degree of toe-in. If a speaker
loses clarity from toeing in, try increasing the distance between them slightly. This will
have the effect of "opening up" the speaker and restoring clarity.
ROOM TREATMENT
Good sounding rooms have a well-balanced acoustic. This does not mean that your
home should look like a recording studio. Commonly found furnishing such as
bookshelves, carpeting and furniture all exhibit beneficial amount of ab-sorption and
dispersion. Rooms with little furniture, carpeting or other surfaces will demonstrate
poor damping and will produce a hard, bright sound.
As a general rule, it is helpful to have more of these sorts of things in the space
immediately around the speakers than scattered throughout the space. A thick carpet
or area rug mounted between your listening position and the speakers is of
tremendous benefit in controlling reflections off the floor. Tapestries, hanging rugs
and/or drapes on the side walls hung slightly ahead of the speaker position will damp
reflections off these surfaces.
MAINTENANCE
Your speaker cabinets can be cleaned periodically with a soft, slightly damp cloth. It is
not necessary to wax them. Our cabinets feature a smooth but strong finish. Still,
please keep them out of direct sunlight and out of heat, since the colour of the veneer
would pale. Should the bass drivers become dusty, it is safe to use a soft brush to
clean the woofers.
* Under NO circumstances should you attempt to clean dust from the tweeter. Doing
so will damage the delicate silk domes.
! Additional Instructions for MOZART Grand !
Please take note of an important feature of Mozart: We have added 2 pieces of BCUs
which can be used to close one or both reflex-ports on the rearside of the speaker.
This is an important room tuning aid: As Mozart has unparalleled low bass capabilities
compared to its size, some rooms can create problems with such low frequencies. By
closing the reflex-ports low frequencies are reduced in amplitude and thereby
matching bass-boosting rooms.
As always please start with careful positioning of the speaker. This will enable true
high end bass in such a superior depth and quality only being known of bigger and
much more expensive speakers. Various positions will make it possible to compensate
the many bass-modes each room has, and these bass-modes are crossing the room
quite close to each other that´s why positioning works. Some rooms however are very
difficult to handle (or your preferred position is pre-determined), in these cases the
BCUs are wonderful room tuning devices.
Happy Listening!
Your Vienna Acoustics Team