Bose 901 Gebruikershandleiding - Pagina 7

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Bose 901 Gebruikershandleiding
Figure 3
Mounting guidelines
AM195438_03_V.pdf
Hardware needed for ceiling suspension
• Screw hooks support the chains at the ceiling. They must have at least a #10 wood
thread with a shank diameter of at least
to go through any plasterboard and still have at least one inch (25 mm) of thread left to
penetrate a wood beam. For a masonry ceiling: use only high-quality metal expansion
masonry anchors that fit the thread of the ceiling hooks.
• Chain: diameter should be at least
• Screw eyes with S hooks attach chains to the speaker and must have at least a #10
wood thread with a shank diameter of at least
• All hardware (screw hooks, chain, screw eyes, S hooks) must have a manufacturer's
safe-load rating of 40 lb (18 kg) or more.
General notes on ceiling suspension
• Suspend the speakers 18 – 36 inches (45 – 91 cm) from the ceiling; do not mount them
flush to the ceiling.
• To ensure an accurate stereo image, the distance from the floor should be three to ten
feet (1 – 3.5 m). Be sure the speakers are no less than 18 inches (45 cm) from the floor.
Do not suspend the speakers exactly halfway between the floor and ceiling.
Note: If the speakers are more than 10 feet (3 m) from the floor, we suggest you lengthen
the chain supporting the rear of the speaker. By doing this you will allow the rear of the
speaker, housing eight of the nine drivers, to be angled slightly downward.
Step by step procedure for ceiling suspension
1. Ceiling: Anchor at least two screw hooks into a rigid structural ceiling support (beam,
joist, or masonry anchor). Drill pilot holes into wood using a
necessary.
2. Speaker: Use the three pre-drilled pilot holes (see Figure 2 - hole set B) on the bottom of
each speaker. Use a
1
inch drill bit (3.7 mm) to enlarge the pilot holes to accept the #10
8
thread screw eyes. Drill to a depth of
completely through the cabinet.
®
Note: Contact Bose
for more information on suspending speakers. See the inside back
cover for phone numbers. For details on your specific ceiling construction, consult a
qualified building contractor or professional installer.
18 – 36" (45 – 91 cm)
4 – 12'
(1.2 – 3.6 m)
8 – 18"
4 – 12'
(1.2 – 3.6 m)
18 – 36" (45 – 91 cm)
3
inch (4.5 mm). They should be long enough
16
5
inch (0.135 in. or 4 mm).
32
3
inch (4.5 mm) or larger.
16
1
inch (12 mm) in the speaker cabinet. Do not drill
2
18 – 48"
(45 – 120 cm)
(20 – 45 cm)
18 – 48"
(45 – 120 cm)
November 21, 2001
Setting Up
1
inch drill bit (3.7 mm), if
8
7