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  | ![]() TB 9-2320-280-35-7 
Section XI. LOUDSPEAKER AND MULTI-NET RACK INSTALLATION 
NOTE 
Remove paint from vicinity of all mounting holes. 
11-1. Using four speaker mounting plates (3) as templates, locate, mark, and drill sixteen 0.281-in. 
diameter holes (7) in lower shelf (4). 
NOTE 
 To ensure proper fit, keep mounting holes near outside edge of 
speaker mounting plate holes. 
 Do not install screws in two far-left side mounting holes at this 
time. These holes align with the frame and require longer 
screws. These screws are installed in step 11-3. 
11-2. Install four speaker mounting plates (3) on lower shelf (4) with fourteen capscrews (1), twenty- 
eight washers (2), fourteen lockwashers (6), and nuts (5). 
1 
2 
1 
2 
3 
0.250 
0.250 
0.250 
4 
3.50 
1.50 
7 
2 
2 
6 
6 
5 
1. 
CAPSCREW  B1821BH025C125N  QTY. 14 
5 
2. 
WASHER  2436161  QTY. 28 
3. 
MOUNTING PLATE  A3014550-1  QTY. 4 
5. 
NUT  9419143  QTY. 14 
6. 
LOCKWASHER  MS35338-44  QTY. 14 
Figure 5-25. 
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