Atlas SM42T-B

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Quick Overview

4" 2-Way Weather Resistant Speaker System With 70.7V/100V-16W Transformer

Use surface-mount Atlas Sound SM42T Series loudspeaker systems for commercial, professional and residential applications or where high-fidelity sound and weather-resistance is desired.

Full-range frequency response makes these systems ideal for indoor and outdoor installation, in monaural and stereo foreground or background music systems, and for applications in boutiques/shops, restaurants/cafes, corporate AV applications and houses of worship.

Multi-position, C-shaped mounting bracket and rugged construction provide optimum installation flexibility and assurance of long-term service.



Atlas SM42T-B

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  • Atlas SM42T-B



Height 7" (17.78 cm)
Width 5" (12.7 cm)
Depth 5 15/16" (15 cm)
Shipping Weight 5.00 lbs (2.27 kgs)
Frequency Response 115Hz to 16kHz
Power Taps 2, 4, 8, 16 Watts & 8Ω
Speaker Type Surface Mount
Dispersion 90°H x 90°V
Sensitivity 88dB


  • 1" Ferrofluid™ Cooled Dome Tweeter & Highly Efficient 4" Polypropylene Woofer
  • All 1/4"-20 Hardware Inserts Allow Easy Integration of "Off The Shelf" Security Hardware
  • Atlas Sound POLYGUARD™ High Frequency Protection Circuit
  • Available in Black or White
  • Color Matched Heavy-duty Zinc Chromate Plated & Powder Coated "C" Bracket (Included)
  • Five-Year Warranty
  • OMNIMOUNT™ 10 Series Compatible
  • Screwdriver Adjustable 16-Watt 70.7V/100V Transformer (may be bypassed for 8-ohm operation)
  • TRX WAVEGUIDE™- Constant Directivity Style High Frequency Wave Guide System
  • Weather-Resistant Construction For Year-round Indoor or Outdoor Use