Authorized Federal Signal Distributor
Federal Signal AM50-25B - AudioMaster Public Address Speaker, 2W, 25 Vrms, Re-Entrant Speaker, UL Fire, Beige

Federal Signal AM50-25B AudioMaster Public Address Speaker, 2W, 25 Vrms, Re-Entrant Speaker, UL Fire, Beige

Alternate Item Number: am50-audiomaster

UPC: 782979600756


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BrochureInstallation InstructionsLine Drawing2D CAD Drawing (DWG)Specification SheetWarranty

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Federal Signal AudioMaster AM50-25B is a 2-watt re-entrant public address speaker designed for clear voice distribution in industrial, commercial, and institutional settings. It operates at 25 Vrms with a transformer-coupled design for reliable signal transmission. The re-entrant horn ensures uniform sound coverage, minimizing dead zones. This speaker is UL Fire Listed and CSFM Approved, meeting stringent safety codes for fire protective signaling use. Its compact, square design (5.50" x 5.50" x 2.52") is suitable for wall mounting and includes a trim ring for adaptation to standard 4-inch square or weatherproof back boxes. The beige housing offers a neutral aesthetic. Operating temperature range is -40°F to 151°F (-40°C to 66°C). Ideal for emergency notification and paging applications where reliable audio communication is critical.
  • 2W power output with 25 Vrms voltage rating for clear audio distribution
  • Re-entrant horn design ensures uniform sound coverage and reduces dead zones
  • UL Fire Listed and CSFM Approved for fire protective signaling compliance
  • Compact 5.50" x 5.50" x 2.52" square design with wall-mounting capability
  • Operating temperature range: -40°F to 151°F (-40°C to 66°C)

Specifications

-40 to 151
DEG F
140 to 10,000
HZ
25/70
Vrms
5.5 H x 5.5 W x 2.5 D
IN
87
dBa
97
dBa
Application
Indoor/Outdoor
Audio Input
25/70 Vrms
Audio Specifications
25 VRMS
Brand Name
Federal Signal
Color
Beige
Connection Type
Transformer-coupled
dBa at 10ft
87 dBa
dBa at 1M
97 dBa
Dimensions
5.5 H x 5.5 W x 2.5 D IN
Enclosure
Type 3R With Model WB Back Box
Loudness
87 DB
Material
Beige Housing
Mounting
Wall
Mounting Type
Wall Mounting
Mounting Type
Wall Mount
Mounting Type
Re-Entrant
Operating Frequency
140 to 10,000 HZ
Operating Temperature
-40 to 151 DEG F
Output Level
2 WTT
Series
AudioMaster
Size
5.50" x 5.50" x 2.52"
Special Features
Includes Trim Ring For 4-Inch Square Back Box
Standard
UL Fire Listed/CSFM Approved
Standard
CSFM,UL Fire
Sub Brand
AudioMaster
Type
Public Address Re-Entrant Speaker
Voltage Rating
25 Vrms
Package Dimensions (L x W x H)
5.75 IN x 5.75 IN x 5 IN
Package Dimensions (L x W x H)
14.605 cm x 14.605 cm x 12.7 cm
Package Weight (Imperial)
1.750 L
Package Weight (Metric)
0.794 kg
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Frequently Asked Questions

What certifications does the AM50 speaker have?

The AM50 speaker is CSFM Approved and UL Fire Listed.

Is the AM50 speaker transformer coupled?

Yes, the AM50 speaker is transformer coupled.

What is the sound output level of the AM50 speaker?

The AM50 speaker has a sound output of 87 dBa at 10 feet.

What type of product is the AM50 and what is its wattage?

The AM50 is an Audiomaster® Public Address 2 Watt Re-entrant Speaker.

What are the voltage requirements for the AM50 speaker?

The AM50 speaker operates on 25 or 70 Vrms.

Can the AM50 speaker be used indoors and outdoors?

Yes, the AM50 speaker is suitable for both indoor and outdoor use.

What is the enclosure rating for the AM50 speaker?

The AM50 speaker has a Type 3R enclosure rating when used with the WB weatherproof back box.

What mounting options are available for the AM50 speaker?

The AM50 speaker offers several mounting options and comes pre-assembled.

How to Install the AM50-25B Loudspeaker

This guide provides step-by-step instructions for installing and configuring the AM50-25B loudspeaker, ensuring proper wiring and setup for optimal performance.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors

  1. Prepare the installation site

    Select an appropriate mounting location for the AM50-25B loudspeaker, ensuring it complies with local codes and guidelines. Verify that the area is clear of obstructions and that the conduit layout is suitable for installation.

  2. Mount the loudspeaker

    Use the supplied #8-32 x 3" mounting screws to secure the loudspeaker to a standard 4 x 4 electrical box. Ensure the loudspeaker is positioned correctly with respect to conduit entryways.

  3. Make electrical connections

    Strip 1/4" of insulation from the ends of the speaker wires. Connect the wires to the corresponding terminals on the back of the loudspeaker, ensuring that the 'S+' and 'S-' terminals are used. Tighten the screws to secure the connections.

  4. Adjust power settings

    Set the desired power output by adjusting the mini jumper on the loudspeaker's PC board. The factory setting is at 1/4 watt; move the jumper to the appropriate pins for 1/2, 1, or 2 watts as needed.

  5. Test the loudspeaker

    After installation, power on the system and test the loudspeaker to ensure it operates correctly. If the volume is insufficient, adjust the power setting to a higher wattage and retest.

  6. Establish a testing routine

    Create a schedule for periodic testing of the loudspeaker in accordance with NFPA 72 and local fire codes to ensure ongoing functionality and compliance.

Frequently Asked Questions about Federal Signal

What certifications and standards do Federal Signal products comply with?

Federal Signal products are certified across multiple international standards, including UL (Underwriters Laboratories) in the USA, CSA (Canadian Standards Association), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia and New Zealand). Their products meet rigorous safety and performance standards for industrial environments, with specific compliance in electrical equipment enclosures, functional safety, and environmental protection ratings.

What is Federal Signal's warranty policy?

Federal Signal offers a comprehensive limited warranty covering most products for 1-5 years from the date of delivery, with specific terms varying by product category. Mechanical sirens, beacons, speakers, and sounders typically receive 5-year parts and labor coverage, while electronic sirens and controllers generally have 2-year warranties. All warranties require return to the factory for service, and on-site services are not included. Certain components like domes, lenses, lamps, and batteries are specifically excluded from warranty coverage.

What industries and applications are Federal Signal products used for?

Federal Signal products are used across multiple critical industrial and municipal sectors for notification, communication, and safety systems. Their product lines cover essential applications including fire alarm systems, public address and telephony, outdoor warning systems, visual and audible signals, and emergency communication networks. Key industries served include manufacturing, municipal emergency services, industrial facilities, and infrastructure environments where clear, reliable communication and safety signaling are paramount.

What technical support does Federal Signal offer?

Federal Signal offers comprehensive technical support through their dedicated [email protected] email and direct phone line at +1 708.534.4756. Their support covers a wide range of notification and communication solutions, including technical assistance for products in public address, telephony, fire alarm, visual and audible signals, outdoor warning systems, and intercoms.

What are the main product lines offered by Federal Signal?

Federal Signal offers comprehensive notification and communication solutions across multiple product lines, including Visual Signals, Audible Signals, Telephony, Intercoms, Fire Alarm, Outdoor Warning Systems, Public Address, and Initiating Systems. Their product range is designed to provide clear communications and critical process notifications that enhance safety and compliance in industrial and public environments.

What are the key features of Federal Signal products?

Federal Signal products are comprehensive notification solutions designed to enhance safety and communication across industrial environments. Their key features include visual and audible signals, fire alarm systems, outdoor warning systems, public address capabilities, telephony, and intercoms. These products provide critical process notifications, ensure safety compliance, and offer advanced technologies like secure encrypted communication, cloud-based control systems, and customizable emergency response interfaces.

What environmental ratings do Federal Signal products have?

Federal Signal products offer robust environmental ratings across multiple standards, including UL 508A, CSA, NEMA, and IEC 60529. Their enclosures are rated for Type 1, 2, 3, 4, 4X, 12, and 13 environments, with IP66 protection, and can operate in temperatures ranging from -40°F to 266°F. These ratings ensure superior protection against dust, water, corrosion, and extreme conditions for indoor and outdoor industrial applications.

What accessories are available for Federal Signal products?

Federal Signal offers multiple accessories for their signaling products, including coupling kits, cable entry adapters, indicator rings, legend plates, and mounting brackets. Key accessories include E-Box endcap kits with M20 and M25 openings, U-Brackets for dual configurations, and color-coded indicator rings in black, blue, green, magenta, red, and yellow. Additional options like adapters for NPT connections and specialized mounting hardware are also available for their Global Series signaling platforms.

What communication protocols do Federal Signal products support?

Federal Signal supports multiple industrial communication protocols including PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, and Modbus RTU. These protocols enable flexible network integration across various industrial automation environments, supporting both traditional fieldbuses and modern Ethernet-based communication standards.

How are Federal Signal products typically installed?

Federal Signal products are typically installed using professional mounting configurations that include wall brackets, base stations, and specialized mounting hardware. Depending on the specific product line—such as outdoor warning systems, visual signals, or audible signals—installation involves precise mounting options like wall-mount antenna brackets, base station radio packages, and modular component assemblies. Each product configuration includes specific mounting accessories like endcaps, adapters, and terminal blocks to ensure secure and compliant installation in industrial and safety-critical environments.