18
Installation Instructions
Directional Speaker Array (Models DSA2, DSA4, and DSA6)
Federal Signal www.fedsig.com
Wood Utility Pole Installation
To install a wood utility pole:
1. Mount the upper DSA bracket, obtained as an option, at the top of the pole with the
proper orientation. Secure the DSA bracket to the utility pole with three 1/2 by 4 inch
long galvanized lag bolts and three 1/2 inch flat washers. (Bolts and washers are
supplied by the installer.) See Figure 3.
2. Measure 12 inches down the pole from the center of the upper bracket to the point
that will be at the center of the DSAMK1 bracket.
3. Align the lower DSAMK1 bracket so it is in vertical alignment with the upper bracket.
4. Mount the lower DSAMK1 bracket using three 1/2 by 4 inch long galvanized lag bolts
and three 1/2 inch flat washers.
5. Remove and save the mounting bolts from the DSA.
6. Lift the array into position, with the cable coming out the bottom, and loosely secure
it to the previously installed upper DSA bracket at the outermost bracket holes using
the hardware previously removed.
7. Depending on how the array is mounted:
• If the array is to be mounted facing a horizontal plane, attach it to the DSAMK1
lower bracket in the outermost bracket holes using the hardware previously
removed.
• If the array is to be mounted so that it is pitched downward at a 15° angle, attach it
to the lower bracket at the innermost bracket holes using the previously removed
hardware.
8. Tighten all array mounting bolts.
Repeat steps 1-8 for each array in the installation.
Concrete or Metal Pole Installation
If the metal pole has a top of the pole plate, use the DSAMKSP to mount to the pole’s top.
The DSAMKSP has all hardware to mount to the top of the pole and to mount one DSA.
If additional DSA speakers are to be mounted, use the DSAMKSPB45 kit. You can use all
brackets on wood, concrete, or metal utility poles.
Table 7 Bracket Options for Size of Pole
Size of Pole
Mounting Bracket
For poles 4.5 inches or larger
Use two I-IP100-PMW mounting brackets with
banding and a DSAMKSPB45 kit
For poles between 2-1/2 and 4.5 inches
Use one DSAMKSPB45 kit and two I-IP100-PM
For poles 2-3/8 inches or smaller
Use one DSAMKSPB23 and two I-IP100-PM
Pay careful attention to the orientation of these attachments to the poles. Once in place,
the speakers will project the loudest sounds in the directions that the brackets face.
When the installation requires the use of the DSAMK4 mounting bracket, you must make a
circular plate and rigidly attached to the top of the pole. Figure 15 shows the required bolt
hole pattern for those brackets.
