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Fonestar SONORA 4TB - Surface Speaker (Pair)

Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
Rs. 28,980.00

A Rugged Speaker Built for Clear Outdoor/PA Performance The Sonora 4TB is a surface-mount loudspeaker with both 100-V line transformer and low-impedance options, designed for background music, public address, or emergency announcements. With a 4″ polypropylene woofer and a 1″ tweeter, it delivers crisp, distortion-free sound from 120 Hz up...

White outdoor speaker on a white background

Fonestar SONORA 4TB - Surface Speaker (Pair)

A Rugged Speaker Built for Clear Outdoor/PA Performance


The Sonora 4TB is a surface-mount loudspeaker with both 100-V line transformer and low-impedance options, designed for background music, public address, or emergency announcements. With a 4″ polypropylene woofer and a 1″ tweeter, it delivers crisp, distortion-free sound from 120 Hz up to 20,000 Hz, great for both voice and music. It’s built tough for outdoor environments with salt mist and waterproof protection. 

Versatile Mounting & Compliance for Safety & Installations


This speaker includes an adjustable weather-proof mount, stainless steel screws, and a safety steel cable for secure installation. Rated IP-66 for protection against dust, rain, and harsh marine environments, it’s optimized for commercial installations—including voice-alarm systems thanks to compliance with EN 54-24 in the “EN” version. Multiple power taps (30 W, 15 W, 7.5 W, 3.75 W) allow matching to different zones.

Product Highlights:

  • Type: 2-way surface loudspeaker with 100-V line transformer + 8-Ω (low impedance) mode

  • Power Handling: 60 W max, 30 W RMS

  • Drivers: 1 × 4″ polypropylene woofer, 1 × 1″ tweeter

  • Frequency Response: 120 Hz – 20,000 Hz

  • Impedance / Power Taps (100 V):
      • 30 W RMS @ 100 V (333 Ω)
      • 15 W RMS @ 100 V (667 Ω)
      • 7.5 W RMS @ 100 V (1,333 Ω)
      • 3.75 W RMS @ 100 V (2,667 Ω)
      • Low-Z 8 Ω mode

  • Sensitivity: ~ 83-84.9 dB @ 1 W/1 m

  • Maximum SPL: ~ 96-97.6 dB at full power / 1 m

  • Coverage Angle: Horizontal / Vertical approx. 145° / 130° at 1 kHz (-6 dB)

  • Protection: IP-66 rating, UV-resistant ABS body, aluminium grille, corrosion-resistant fixtures; salt mist tested

  • Switch / Selector: W-selector for switching between high-impedance (100 V / 70 V) taps and low-impedance mode

  • Connectors: Euroblock terminals in/out, for cables 0.25-2.5 mm²

  • Temperature Range: -10°C to +60°C

  • Finish: ABS housing; aluminium grille; weather-treated mount; stainless steel screws

  • Dimensions: 125 mm × 202 mm × approx. 125 mm depth (speaker-only) 

  • Weight: ~ 1.5 kg each

Features & Specifications
GENERAL
Model Fonestar SONORA 4TB
Type Surface Speaker with 100 V line transformer and low impedance
Outdoor rating / Protection IP-66 Outdoor / Marine Environments
AUDIO PERFORMANCE
Power Handling 60 W max / 30 W RMS
Drivers 1 × 4″ polypropylene woofer, 1 × 1″ tweeter
Frequency Response 120 Hz – 20,000 Hz
Sensitivity 84.9 dB @ 1 W/1 m
SPL (Max) ≈ 97.6 dB @ max W / 1 m
IMPEDANCE & TRANSFORMER OPTIONS
Low Z 8 Ω
100 V Line Taps 30 W / 15 W / 7.5 W / 3.75 W
PHYSICAL & INSTALLATION
Dimensions (Speaker Body) 125 × 202 × 125 mm
Weight 1.5 kg each
Mounting Weatherproof adjustable bracket ±60°, stainless steel screws, safety cable
Connectors Euroblock in/out, cable 0.25-2.5 mm² cross section
ADDITIONAL FEATURES
Weatherproof Materials ABS UV-resistant body, aluminum grille
Protection Standards IP-66; salt mist environment tested