Federal Signal Corporation DSA1 User manual

Description, Specications,
and Installation Manual
25500455
Rev. A1 0418
Printed in U.S.A.
© Copyright 2018 Federal Signal Corporation
DSA1™Speaker
High-Powered Indoor/Outdoor Speaker

Limited Warranty
This product is subject to and covered by a limited warranty,
a copy of which can be found at www.fedsig.com/SSG-Warranty.
A copy of this limited warranty can also be obtained by written
request to Federal Signal Corporation, 2645 Federal Signal Drive,
University Park, IL 60484, email to [email protected] or
call [phone].
This limited warranty is in lieu of all other warranties, express or
implied, contractual or statutory, including, but not limited to the
warranty of merchantability, warranty of tness for a particular
purpose and any warranty against failure of its essential purpose.
2645 Federal Signal Drive
University Park, Illinois 60484-3617
www.fedsig.com
Customer Support 800-548-7229 • [phone]
Technical Support 800-524-3021 • [phone]
All other product names or trademarks are properties of their respective owners.
All products indicated are trademarks of Federal Signal Corporation.

3
Description, Specications, and Installation Manual
Contents
Safety Messages......................................................................................................................................................5
Safety Messages to Installers .............................................................................................................................5
General Description ................................................................................................................................................8
Introduction .........................................................................................................................................................8
Features..............................................................................................................................................................8
Specications ..........................................................................................................................................................9
Installation..............................................................................................................................................................10
Determine a Suitable Location..........................................................................................................................10
Wall Mounting ...................................................................................................................................................10
Attaching the Mounting Brackets to the Speaker Housing................................................................................10
Pole Mounting ..................................................................................................................................................14
Large Pole Mounting (6 in diameter or larger) ..........................................................................................14
Small Pole Mounting (2-3/8 in or 4-1/2 in diameter poles)........................................................................15
Mounting with Omni Direction Bracket (2-3/8 in diameter pole)........................................................................16
Mounting without Bracket..................................................................................................................................17
Opening the Housing ........................................................................................................................................17
Wiring the Speaker ...........................................................................................................................................18
Tapping the Speaker.........................................................................................................................................19
Closing the Housing..........................................................................................................................................19
Getting Service ......................................................................................................................................................19

4
DSA1 Speaker
Figures
Figure 1 Front and Back of DSA1 Speaker ...........................................................................................................9
Figure 2 Bracket attached to speaker.................................................................................................................. 11
Figure 3 Width and height of bracket .................................................................................................................. 11
Figure 4 Depth and height with bracket ..............................................................................................................12
Figure 5 Top view of speaker ...............................................................................................................................12
Figure 6 Bottom view of speaker .........................................................................................................................13
Figure 7 Ceiling mount..........................................................................................................................................13
Figure 8 Bracket I-IP100-PMW..............................................................................................................................14
Figure 9 Bracket I-IP100-PM .................................................................................................................................15
Figure 10 Bracket I-IP100-OMNI ...........................................................................................................................16
Figure 11 Surface mount hole center dimensions .............................................................................................17
Figure 12 Opening the speaker............................................................................................................................18
Figure 13 Wiring the Speaker Drawing................................................................................................................18
Figure 14 Tapping the Speaker Drawing .............................................................................................................19
Tables
Table 1 Electrical .....................................................................................................................................................9
Table 2 Sound Power Level (SPL)..........................................................................................................................9
Table 3 Environmental and Physical .....................................................................................................................9

5
Safety Messages
Description, Specications, and Installation Manual
Safety Messages
It is important to follow all instructions shipped with this product. This device is to be
installed by trained personnel who are thoroughly familiar with the country electric
codes and will follow these guidelines as well as local codes.
Planning
• If suitable warning equipment is not selected, the installation site for the DSA1
Speaker is not selected properly or the DSA1 Speaker is not installed properly, it
may not produce the intended optimum audible warning. Follow Federal Emergency
Management Agency (FEMA) recommendations.
• If DSA1 Speakers are not activated in a timely manner when an emergency
condition exists, they cannot provide the intended audible warning. It is imperative
that knowledgeable people, who are provided with the necessary information, are
available at all times to authorize activation.
• When DSA1 Speakers are used out of doors, people indoors may not be able to
hear the warning signals. Separate warning devices or procedures may be needed to
effectively warn people indoors.
• The sound output of DSA1 Speaker is capable of causing permanent hearing damage.
To prevent excessive exposure, carefully plan placement, post warnings, and restrict
access to areas near sirens.
• Activating the DSA1 Speaker may not result in people taking the desired actions if
those to be warned are not properly trained about the meaning of warning sounds.
Users should follow FEMA recommendations and instruct those to be warned of
correct actions to be taken.
After installation, service, or maintenance, test the system to conrm that it is operating
properly. Test the system regularly to conrm that it will be operational in an emergency.
Safety Messages to Installers
People’s lives depend on your safe installation of our products. It is important to follow
all instructions shipped with this product. This device is to be installed by a trained
electrician who is thoroughly familiar with the National Electrical Code and/or Canadian
Electrical Code and will follow the NEC and/or CEC Guidelines as well as all local
codes. This DSA1 Speaker should be considered a part of the warning system and not the
entire warning system.
The selection of the mounting location for this DSA1 Speaker, its controls and the routing
of the wiring are to be accomplished under the direction of the Facilities Engineer and
the Safety Engineer. In addition, listed below are some other important safety instructions
and precautions you should follow:
• Electrocution or severe personal injury can occur when performing various
installation and service functions such as making electrical connections, drilling
holes, or lifting equipment. Therefore only experienced electricians should install

6
Safety Messages
DSA1 Speaker
this product in accordance with national, state and any other electrical codes having
jurisdiction. Perform all work under the direction of the installation or service crew
safety foreman.
• Read and understand all instructions before installing, operating, or servicing this
equipment.
• This product shall be mounted at the minimum hearing distance of ten feet in
accordance with FEMA guidelines limiting sound level exposure to 123 dBc
maximum sound level.
• All effective warning sounds may, in certain circumstances, cause permanent hearing
loss. Take appropriate precautions such as wearing hearing protection. Maximum
sound level exposure limits specied in OSHA 29 CFR 1910 should not be exceeded.
• These devices are intended for permanent installation and operation in accordance
with Title 46, Code of Federal Regulations, Parts 110–113, or Title 33, Code of
Federal Regulations, Part 183, Sub-part I, Section 183.410, and the applicable
requirements of the American Boat and Yacht Council, Inc., and/or ANSI/NFPA 302,
“Fire Protection Standard for Pleasure and Commercial Motor Craft.”
• For optimum sound distribution do not install this speaker where objects would block
any portion of the front of the DSA1 Speaker.
• Do not paint the DSA1 Speaker. No nish or coating is required. Paint may obstruct
the sound output, reducing the effectiveness of the horn.
• Establish a procedure to routinely check the signal system for proper activation and
operation.
• Any maintenance to the unit MUST be performed by a trained electrician in
accordance with NEC Guidelines and local codes or a Federal Signal certied
Service Provider.
• Never alter the unit in any manner.
• The nameplate should NOT be obscured, as it contains cautionary and/or other
information of importance to maintenance personnel.
• After installation and completion of initial system test, provide a copy of these
instructions to all personnel responsible for operation, periodic testing, and
maintenance of the equipment.
• File these instructions in a safe place and refer to them when maintaining and/or
reinstalling the device.
Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death.

7
Safety Messages
Description, Specications, and Installation Manual
Installation and Service
• After installation or service, test the system to conrm that it is operating properly.
Test the system regularly to conrm that it will be operational in an emergency.
• If future service and operating personnel do not have these instructions to refer to,
the system may not provide the intended audible warning and service personnel
may be exposed to death, permanent hearing loss, or other bodily injury. File these
instructions in a safe place and refer to them periodically. Give a copy of these
instructions to new recruits and trainees. Also give a copy to anyone who is going to
service or repair the DSA1 Speaker.
• To reduce the risk of electric shock, do not perform any servicing other than what
is contained in the operating instructions unless you are qualied to do so. Refer all
servicing to qualied service personnel. Always test the DSA1 Speaker before using
after repairs have been made.
Read and understand the information contained in this manual before
attempting to install or service the siren.

8
General Description
DSA1 Speaker
General Description
Introduction
The DSA1 Speaker is a 100-watt non-amplied speaker that can be powered from
Federal Signal UltraVoice controllers or any 25 V or 70 V amplier system. Use the
DSA1 as a warning and alert device with audible signals (tone or voice).
The DSA1 is an addition to the DSA family, and can be combined with the DSA2, DSA4,
and DSA6 for exible mass notication designs. The DSA1 includes stainless steel
mounting hardware for wall or ceiling mount. Optional mounting brackets include large
or small mounts and a unique omnidirectional mounting bracket. The DSA1 enclosure
has multiple access points to allow installation of strobes, sensors, or lights.
The DSA1 Speaker is an ideal solution for existing notication systems where lack of
coverage exists, but the coverage area does not require the higher power levels of the
larger DSA Speakers.
The DSA1 is designed for outdoor use and large indoor structures. All wiring interfaces
are accessible through internal connectors and built-in NPT entrances for quick and easy
installation.
The DSA1 comes with an adjustable stainless-steel wall mount bracket that allows the
angle of the speaker to be adjusted. Optional pole mount brackets are available for small
and large diameter poles.
Features
The DSA1 has the following features:
• Indoor or Outdoor 100-watt tappable speaker with high powered voice and tone
• 25 Vrms and 70 Vrms audio input taps
• Speaker rated at 120 dBa for tones and 114.5 dBa for voice at 10 feet (at 100 W)
• 100 W, 55 W, 32 W, and 18 W output taps (See Table 2 for specications.)
• Wall or pole mount available, wall mount standard
• NEMA 4X outdoor rated
• Multiple access points for mounting of optional equipment

9
Specications
Description, Specications, and Installation Manual
The following is a picture of the DSA1 Speaker with standard wall-mount bracket.
Figure 1 Front and Back of DSA1 Speaker
Specications
Table 1 Electrical
Operating Voltage 25 Vrms or 70 Vrms
Wire size for connectors 12 to 18 AWG
Wiring Entries Three, 3/4-inch NPT and one, 1/2-inch NPT
Table 2 Sound Power Level (SPL)
Audio Frequency response 500 Hz to 4000 Hz
Power Tap SPL (dBC) at 10 feet tone/voice
100 W 119 dBa/114.5 dBa
55 W 117 dBa/111.5 dBa
32 W 114 dBa/108.5 dBa
18 W 111 dBa/105.5 dBa
Table 3 Environmental and Physical
Operating temperature range -40°F to +150°F / -40°C to +66°C
Humidity range 0-95%, non-condensing
Size 7 in height, 9 in width, 10 in length
178 mm x 229 mm x 254 mm
Weight 15.6 lb/7.08 kg

10
Installation
DSA1 Speaker
Installation
Read and adhere to all safety warnings in this manual before installing the
DSA1 Speaker.
Electrocution or severe personal injury can occur when making electrical
connections, drilling holes, or lifting equipment. Therefore, experienced
electricians in accordance with national and local electrical codes, acting
under the direction of the installation crew safety foreman, should perform
installation.
Determine a Suitable Location
The DSA1 can be mounted on any relatively at surface with the supplied mounting
brackets. The mounting surface must be capable of supporting the weight of the speaker.
Wall Mounting
The DSA1 Speaker comes standard with a bracket for vertical wall or pole mount with
optional pole accessories. The standard mount can be ipped to allow ceiling mount.
To wall mount the DSA1 Speaker, do the following:
1. Find suitable location to mount speaker. Use industry or company preferred practices
when mounting hardware to structures.
2. Verify the mounting is adequate to hold the weight of speaker, cables and visual
devices, if equipped.
3. Refer to Figure 3 or use the U-shaped wall bracket as a template to scribe the
mounting hole locations.
4. Mount the DSA1 Speaker to the mounting surface with user-supplied hardware.
Federal Signal recommends 3/8 in fasteners.
5. Loosen the pivot bolts to provide the direction of the speaker.
Attaching the Mounting Brackets to the Speaker Housing
Do the following to attach the brackets:
1. The mounting brackets are attached to the speaker as shown below using the six
supplied ¼-20 x 5/8 in screws.
Note the orientation of the curved slots on the L-shaped brackets, this orientation is
important to allow the speaker to be pivoted downward.
2. Tighten the ¼-20 x 5/8 in screws to approximately 80 in-lb.
3. Attach the U-shaped wall bracket with four supplied sets of 3/8-16 x 1 in bolts, at
washers, lock washers, and nuts.

11
Installation
Description, Specications, and Installation Manual
Figure 2 Bracket attached to speaker
1/4-20 x 5/8" screws (6)
3/8-16 x 1"
bolts (4)
Note the orientation
of this curved slot
with respect to the
“FS” on the side of
the housing.
1/2" NPT Sealed
from the factory
Figure 3 Width and height of bracket
2.00 in
5.00 in
2.88 in
1.44 in
5X
.397

12
Installation
DSA1 Speaker
Figure 4 Depth and height with bracket
6.68 in
2.53 in
12.87 in
2.00 in10.09 in
Figure 5 Top view of speaker
10.09 in
12.87 in
8.90 in
1/2" NPT Sealed
from the factory

13
Installation
Description, Specications, and Installation Manual
Figure 6 Bottom view of speaker
3/4" NPT
3/4" NPT Sealed
from the factory
3/4" NPT*
*DSA1 Speaker includes a Threaded Plug kit.
Figure 7 Ceiling mount

14
Installation
DSA1 Speaker
Pole Mounting
The DSA1 comes standard with a bracket for vertical wall or ceiling mount. The optional
I-IP100-PMW kit or I-IP100-PM kit is required for pole mounting.
Large Pole Mounting (6 in diameter or larger)
Use the following procedure if mounting the speaker with the optional I-IP100-PMW
bracket:
1. Find suitable location to mount speaker. Use industry or company preferred practices
when mounting hardware to poles or other structures.
2. Attach the I-IP100-PMW bracket to the pole using banding or use the pre-drilled
holes to bolt the bracket to the pole or structure.
3. Using the supplied at washers, lock washers, and 3/8 in nuts, mount the speaker to
the I-IP100-PMW bracket as shown in Figure 2.
4. Use the side pivot bolts to allow adjustment of the speaker up and down to optimize
speaker effectiveness.
Figure 8 Bracket I-IP100-PMW

15
Installation
Description, Specications, and Installation Manual
Small Pole Mounting (2-3/8 in or 4-1/2 in diameter poles)
Use the following procedure if mounting the speaker with the optional I-IP100-PM
bracket:
1. Find suitable location to mount speaker. Use industry or company preferred practices
when mounting hardware to poles or other structures.
2. Remove the speaker U shaped bracket, store the pivot/lock bolts.
3. Select the proper I-IP100-PM U-bolt for the pole.
4. Attach the U-shaped bracket from the speaker to the pole using the I-IP100-PM
U-bolt, bracket, nuts and washers.
5. Attach the speaker and set direction using the pivot and lock bolts.
Figure 9 Bracket I-IP100-PM

16
Installation
DSA1 Speaker
Mounting with Omni Direction Bracket (2-3/8 in diameter pole)
Use the optional I-IP100-OMNI bracket to create an omni-directional speaker. The
speaker is mounted as described in the Small Pole Mount section with the omni bracket
mounted at a distance of 2.0 inches from the speaker.
1. Identify location for bracket.
2. Attach bracket using supplied U-bolts and hardware.
Figure 10 Bracket I-IP100-OMNI
2.0 in
Omni Bracket

17
Installation
Description, Specications, and Installation Manual
Mounting without Bracket
You can mount the speaker directly to the mounting surface without the bracket. Use
installer-supplied 1/4-20 fasteners that are suitable for the mounting surface. Use
Figure 10 for the hole center dimensions.
Figure 11 Surface mount hole center dimensions
5.20 in
2.60 in
3.00
6.00
7.39
C
L
C
L
(6) 1/4-20
0.5 in THREAD DEPTH
Opening the Housing
Tools required:
3/8 in socket
6 in extension
To open the housing, loosen the four cover screws while supporting the housing so it
does not fall. (The cover screws are retained in the housing.) The front of the unit is
heavy, but it is attached to the rear housing with a pivot hinge to allow ease of service.
If the unit requires service, replace the front housing, amplier, and power supply (if
equipped) as an entire unit.

18
Installation
DSA1 Speaker
Figure 12 Opening the speaker
Cover Screws
Wiring the Speaker
To wire the speaker:
1. Open the speaker.
2. Route the leads from the audio amplier to the terminal marked LINE IN. Use
Common and 25 V or Common and 70 V.
3. Use the LINE OUT terminals to connect to an additional speaker or an end-of-line
resistor, if required. Speakers in close proximity must be connected in phase.
Figure 13 Wiring the Speaker Drawing
LINE IN LINE OUT
COM 9.8V 14.2V 20.0V
55W
32W18W
28.3V 100W
COMCOM 25V 70V
LINE IN COM 25V 70V LINE OUT

19
Getting Service
Description, Specications, and Installation Manual
Tapping the Speaker
The DSA1 can be tapped for lower power levels.
To tap the speaker:
1. Open the speaker.
2. Use the quick connect connectors to tap to the desired power level. Leave one quick
connect connected to COM and connect the speaker lead to one of the following taps:
18 W, 32 W, 55 W, or 100 W.
Figure 14 Tapping the Speaker Drawing
Tap Settings
COMCOM 25V 70V
LINE IN COM 25V 70V
LINE OUT
14.2V
9.8V
COM 20.0V 28.3V
18W 32W 55W 100W
Closing the Housing
To close the housing, do the following:
1. Verify that the cover gasket is in the groove around the perimeter of the rear cover.
2. If the front of the unit was removed, lift the front of the DSA1 to allow the hinge pin
to be installed, align the front unit with the rear cover and attach the hinge pin with
retaining clip.
3. Verify that the wires are not strained and are not impeding ability to close unit.
4. Lift front of unit and seat the front cover against the rear enclosure.
5. Tighten the cover screws hand tight, and then torque them in alternate pattern to
60 in-lb +/- 10 in-lb.
Getting Service
If you are experiencing any difculties, contact Federal Signal Customer Care at:
800-548-7229 or 708-534-3400 extension 5822 or Technical Support at: 800-524-3021
or 708-534-3400 extension 7329 or through e-mail at: [email protected]. For
instruction manuals and information on related products, visit: http://www.fedsig.com/

2645 Federal Signal Drive
University Park, Illinois 60484-3617
www.fedsig.com
Customer Support 800-548-7229 • [phone]
Technical Support 800-524-3021 • [phone]