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Atlas B51-4

4" commercial in-ceiling speaker

Item # 978B514

The Atlas B51-4 loudspeaker is a great all-purpose choice for your business establishment.

The Atlas B51-4 loudspeaker is a great all-purpose choice for your business establishment.

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Item # 978B514

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$44.99 each
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About the Atlas B51-4

An all-purpose in-ceiling loudspeaker

The Atlas B51-4 loudspeaker is a great all-purpose choice for your business establishment. Use the built-in transformer tap to power multiple speakers with a commercial amplifier, and you can offer pleasant background music and clear voice announcements throughout your space. Each speaker includes a white powder-coated baffle, so it will blend easily into your decor.

An all-purpose in-ceiling loudspeaker

The Atlas B51-4 loudspeaker is a great all-purpose choice for your business establishment. Use the built-in transformer tap to power multiple speakers with a commercial amplifier, and you can offer pleasant background music and clear voice announcements throughout your space. Each speaker includes a white powder-coated baffle, so it will blend easily into your decor.


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Product highlights:

  • 4" full-range driver
  • white powder-coated baffle included
  • frequency response: 150-17,000 Hz (±5dB)
  • 94 dB sensitivity
  • 135° distribution pattern
  • built-in 25/70V transformer with power taps: .25, .5, 1, 2, and 4 watts
  • 2-1/4" mounting depth
  • weight: 2.83 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # B51-4
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What's in the box:

  • One 4" Speaker
  • Transformer
  • Grill
  • Mounting screws

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More details on the Atlas B51-4

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Features & specs

General
Drivers per speaker 1
Woofer Size (inches) N/A
Tweeter Size (inches) N/A
System Frequency response 150-17,000
Maximum SPL N/A
Power Handling
Power rating 10 Watts
Peak Power rating ---
Specs
Width (inches) 4
Height (inches) ---
Depth (inches) 2-1/4
Weight 2.83 lbs

Product Research

Features

Overview: The Atlas B51-4 is a 4", 25/70 volt in-ceiling speaker featuring the popular Atlas FC104 high performance driver. The speaker provides wide-angle sound dispersion allowing fewer speakers to be needed in a distributed system and is ideal for commercial paging and background music applications in offices, reception areas, waiting rooms and many other applications. It features a 10 ounce ceramic magnet and a damped, high-compliance cone that provides excellent low frequency reproduction with a smooth extended response. The B51-4  is UL 1480 rated, for general signaling, and UL2043 rated, for use in plenum spaces and comes ready to install with an included grill, transformer, and mounting screws.

25/70 Volt: The B51-4 can be used in either 25 volt or 70.7 volt systems. Tap settings for 70 volt include: 0.25 W, 0.5 W, 1 W, 2 W, and 4 W. An included pigtail of multi-colored wires is used to access each tap setting.

Specifications:

  • Speaker Size: 4"
  • Sensitivity: 94 dB (1W/1M)
  • Power Rating: 10 W program
  • Frequency Response: 150 Hz - 17 kHz
  • Dispersion: 135˚/-6 db, 2 kHz octave band
  • Dimensions: Diameter - 4.0", Depth - 2.250"
  • Shipping Weight: 2.83 lbs.

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