Bose Virtually Invisible 191 Installation Guide - Page 11
Testing the space behind the hole - speakers dimensions
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English Deutsch Français Italiano Nederlands STEPS TO INSTALLING Figure 10 A 22-inch (55.9 cm) length of sturdy wire bent in two places Figure 11 Checking the space for the depth of the speaker Testing the space behind the hole 7LSYou need a tape measure and a sturdy wire (such as a straightened coat hanger) 22 in. (55.9 cm) in length for this step. 1. Bend the wire as shown in Figure 10. 3 in. (7.6 cm) 4 1/8 in. (10.5 cm) 4 3/4 in. (12 cm) 141/4 in. (36.2 cm) 7LSFor greater accuracy, make the first bend a little long, measure again, and cut off the extra length at that end. WARNING: If there is any possibility of electrical wiring in the space behind the wallboard, wrap the wire with electrical tape to prevent electric shock. 2. Make a mark 41/8 in. (10.5 cm) from the short end as an indicator of the proper front-to-back depth of the hole. 3. Use the bent wire to test for enough depth, front-to-back: Insert the short end of the wire into the hole and straight back (Figure 11). Probe to make sure nothing is in the way to a depth of 41/8 in. (10.5 cm). This indicates that the space behind the wallboard is deep enough for the front-to-back speaker dimension. (1401.5/8"cm) (1401.5/8"cm) • If the wire goes in without a problem, proceed to step 4, below. • If you cannot insert the wire to the 41/8-inch (10.5 cm) mark, you need to drill a new pilot hole elsewhere. Then repeat step 3. 4. Use the wire again to test the width, side-to-side: With the short end still in the hole, reposition it, as shown in Figure 12 on page 12, and rotate it 360° around the hole. This indicates if the wall space is wide enough on each side of the hole for the side-to-side dimension of the speaker. 11