Bose FreeSpace 6 Handbuch für Installateure - Seite 14
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1.0 System Placement
1.4 Ceiling types
Check the ceiling construction before beginning installation. Ceiling type, thickness, and strength determine the
installation and connection methods for the loudspeakers. Ceiling type also dictates whether to use support rails. If in
doubt about these choices, consult a building trade professional, architect, or licensed professional engineer.
Ceiling Type
Description
Rigid ceiling tiles
If the tiles are particle board, plywood, gypsum board, or plaster, follow the instructions for
either tile ceilings or structural ceilings. They do not require support rails. However, support
rails may be needed if moisture or other environmental conditions could weaken the ceiling.
However, if the support rails are not used, the tilesmust be strong enough to support the
loudspeaker by themselves. See "Support rails" below for more information.
Soft ceiling tiles
If the tiles are a "soft" material (like mineral wool or glass fiber), follow the instructions for
ceiling tiles. Use the support rails with this type of ceiling tile. These tiles can bow or absorb
moisture and may not continue to support the loudspeaker's weight.
Structural ceilings
Follow the instructions for structural ceilings. Remove the support rails from the ceiling pans
before using the "structural ceiling" installation method.
Support rails
Not all ceilings require support rails. Only the installer can determine if a ceiling is strong enough to support the
loudspeakers by itself. If in doubt, consult a building trade professional, architect, or licensed professional engineer.
The support rails are 23
3
/
inches (60 cm) long, and will support a loudspeaker on a 2 foot x 4 foot (0.6 m x 1.2 m) or
4
smaller tile. If the ceiling tiles are another size, the support rails will usually provide adequate support if they meet the
edge of the tile on at least two sides.
Follow these guidelines:
• For 60 cm tiles, place the ceiling pans and support rails at a 10 – 15 angle
• For 62 cm tiles, extend the rails in opposite directions until each rail reaches the ceiling grid on one side of the tile
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10 – 15
AM180090_02_V.pdf • May 7, 2002