4" (102 mm) 4 Ohm, Full Range Speaker

Brand Name
Oaktron by MISCO
Model #
100-WB04-01
Part #
93074
In stock
$27.49

For a rugged and durable outdoor audio solution, choose the 93074. This 4” full range speaker is great for wide-band applications requiring reliability and consistency for all outdoor communications. The 93074 works between -40°F to 131°F (-40°C to 55°C), using a UV resistant poly cone and a high compliance cloth surround to maintain intelligibility across all climates. Add a subwoofer for full range of sound to bring your audio communications up to the next level.

  • Wide-band/Full range speaker
  • 4" (102 mm) steel basket with black powder coat finish
  • 4 ohms, 24 watts, 88 dB SPL
  • -40°F to 131°F (-40°C to 55°C) temperature range
  • High temperature copper voice coil, Kapton former
  • UV resistant polypropylene cone, cloth surround

Oaktron by MISCO is the premium line of high performance, ready-to-ship transducers and drivers for a wide variety of applications including high fidelity, arcade, and casino games, automotive, aerospace and many more. From elegantly simple to highly specialized designs for unique and demanding applications, there is an Oaktron loudspeaker perfectly suited for your needs.

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 Oaktron by MISCO
Model # 100-WB04-01
Size, Nominal (inch & mm) 4" (102 mm)
Shape of Speaker Square
Speaker Type Full Range
Application Voice Communications
Environment Outdoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 4
Rated Power IEC268-5 (W) 24 Watts
Rated Impedance (Ω) 4
Continuous Power (W) 24
Program Power (W) 48
Frequency Range (Hz) 100 - 10,000
Sensitivity (dB SPL) ¹ 88
Resonant Frequency (Fs) (Hz) 144
DC Resistance (Re) (Ω) 3.1
Voice Coil Inductance (Le) (mH) 0.15
Mechanical Q Factor (Qms) 4.30
Electrical Q Factor (Qes) 1.32
Total Q Factor (Qts) 1.01
Mechanical Resistance (Rms) (kg/s) 0.88
Compliance Equivalent Volume (Vas) (L) 1.57
Suspension Compliance (Cms) (mm/N) 0.29
Surface Area of Diaphragm (Sd) (cm²) 61.51
Moving Mass (Mms) (gm) 4.17
Magnetic Gap Height (mm) 0.2
Coil Winding Height (mm) 0.2
Motor Force Factor (BL) (T•M) 3.0
Efficiency (η₀) (%) 0.34
Efficiency Bandwidth Product (EBP) (Fs/Qes) 108.76
Basket Type Stamped steel
Terminal Size (mm) 6.4 x 0.8 / 4.7 x 0.5
Voice Coil Diameter (mm) 19.38
Voice Coil Wire Material Copper
Voice Coil Former Material Kapton
Voice Coil Winding Single Layer
Magnet Material Ferrite
Magnet Weight (gm) 136.08
Cone Body Material Polypropylene
Cone Surround Material Cloth
Dust Cap Material Polypropylene
Net Weight (kg) 0.46
Technical Notes

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