4.5 Inch (116 mm) Flame-Retardant Voice Range Speaker

Brand Name
Misco OEM
Part #
Built to Order

An 8 ohm, 4.5” voice range speaker with a small yet powerful lightweight alnico magnet for space-conscious avionic audio systems. This model includes a full flame-retardant treatment of its cone and surround.

  • Voice range speaker
  • 4.5” (116 mm) steel basket diameter
  • 15 watts, 8 ohm, 90 dB SPL
  • 0.6” copper voice coil, aluminum former
  • 1.5 oz. alnico magnet
  • Flame-retardant felted paper cone & surround

MISCO engineers use the world’s most sophisticated loudspeaker measurement systems including the Klippel Analyzer to maximize and validate the speaker’s design, as well as the Klippel QC module to ensure perfect unit to unit consistency and reliability.

Download Product Specifications (PDF) »

More Information
Brand Name Misco OEM
Speaker Type Voice
Shape of Speaker Round
Size, Nominal (inch & mm) 4" (100 mm)
Environment Indoor
Application Aerospace, Voice Communications
RoHS Compliant No
Rated Impedance (Ω) 8
Rated Power IEC268-5 (W) 15 Watts
Program Power (W) 30
Sensitivity (dB SPL) ¹ 90
Frequency Range (Hz) 150 - 10,000
Resonant Frequency (Fs) (Hz) +/- 15% 190
Nominal Impedance (Z) (Ω) 8
Basket Type Stamped steel, zinc-plated
Terminal Size (mm) 4.7 x 0.5
Voice Coil Diameter (mm) 15.2
Voice Coil Wire Material Copper
Voice Coil Former Material Aluminum
Magnet Material Alnico
Magnet Weight (g) 41.7
Cone Body Material Flame-retardant paper
Cone Surround Material Flame-retardant paper
Net Weight (kg) 0.26
Technical Notes

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