6 Inch (156 mm) 4 Ohm, Flame Retardant Voice and Paging Speaker

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The FC6S-4FR-I is a 6" voice and paging speaker designed for aircraft and avionic applicaitons. This high-sensitivity driver weilds a high-power ferrite magnet, a cone and surround treated to be flame retardant, and rests in a rugged steel frame--ideal for sound systems in aircraft cabins.

  • Voice range speaker
  • 6" (156 mm) steel basket diameter
  • 12 watts, 4 ohm, 93 dB SPL
  • 0.75" copper voice coil, aluminum former
  • Ferrite magnet, flame retardant cone & surround

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More Information
Brand Name MISCO OEM
Speaker Type Voice
Shape of Speaker Round
Size, Nominal (inch & mm) 6" (152 mm)
Environment Indoor
Application Aerospace, Indoor, Voice Communications
RoHS Compliant No
Rated Impedance (Ω) 4
Rated Power IEC268-5 (W) 12 Watts
Program Power (W) 24
Sensitivity (dB SPL) ¹ 93
Frequency Range (Hz) 60 - 12,000
DC Resistance (Re) (Ω) 3.2
Resonant Frequency (Fs) (Hz) +/- 15% 110
Basket Type Stamped steel
Terminal Size (mm) 4.8 x 0.5
Voice Coil Diameter (mm) 20.2
Voice Coil Wire Material Copper
Voice Coil Former Material Aluminum
Magnet Material Ferrite
Magnet Weight (g) 136.08
Cone Body Material Fire retardant paper
Cone Surround Material Fire retardant paper
Spider Material Fire retardant cotton
Dust Cap Material Fire retardant paper
Net Weight (kg) 0.51
Technical Notes


¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance