Atlas Sound B51-4 4" In-Ceiling Speaker with 4-Watt 25V/70V Transformer and 51-4 Baffle

Save 18%
Atlas Sound SKU: B51-4
No reviews

Sale price$60.99 Regular price$73.99


The B51-4 loudspeaker assembly combines the sound performance of a full range 4" high compliance loudspeaker with the job site convenience and economy of a factory-assembled loudspeaker, transformer and baffle. Model incorporates the popular Atlas Sound FC104 high performance loudspeaker, recognized for full-range voice and music reproduction. Unit provides wide-angle sound dispersion to achieve desired coverage with fewer loudspeakers in distributed systems. Each loudspeaker employs a 10 ounce ceramic magnet and a damped, high-compliance cone to provide excellent low-frequency reproduction with smooth extended response. Package includes factory-mounted, dual-voltage 70.7/25V transformer and round grille with screw mount installation.

  • Factory-Assembled Loudspeaker Packages Save Time and Money
  • High Compliance 4" Loudspeaker for Full-Range Audio Reproduction in Background Music and Paging Systems
Frequency Response 150Hz - 17kHz
Sensitivity 94dB (at 1W/1m)
Power Taps .25, .5, 1, 2, & 4 Watts
Speaker Type 4" (102mm) High Compliance Loudspeaker Transformer / Baffle Assemblies
Dispersion 135°/ -6dB, 2kHz
Depth 2 1/4" (5.715 cm)
Diameter 4" (10.16 cm)

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

Customer Reviews

Be the first to write a review

Nationwide Audiovisual Services - Design, Installation & Support - A Partner You Can Trust

Creation Networks offers audiovisual & video conferencing services for projects of all sizes - from a single meeting room to a nationwide deployment. You can count on us for your audiovisual technology system's design, configuration, programming, installation, and support. It is important that you get Top Quality products from the best manufacturers, and then purchase from a trusted partner who tests and installs what they sell, giving you the best value. Our goal at is to only represent the top products and test everything before recommending or selling our solutions.


Our AV experts have earned their professional certifications to design, build, and manage the best AV services for you. View Our Certifications

Product Selection

Choose from products and national brands to find the right technology for your needs. View Our Vendor Partners