2.5 Inch (66 mm), 4 Ohm, Wide Range Speaker

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

The 93005 provides an indoor, wide-range sound solution with a rear mounting design at an affordable price. A ferrite magnet and steel basket with a paper cone make this speaker ideal for gaming cabinets, medical devices, and music systems. 

  • Wide Range Speaker
  • 2.5 inch (66 mm) basket diameter
  • 2 watts, 4 ohms, 89 dB SPL
  • 0.5 inch copper voice coil
  • Ferrite magnet, stamped steel basket
  • Paper cone, inverted cloth surround

Oaktron by MISCO is a 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.   

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More Information
Brand Name Oaktron by MISCO
Model # 66-WB04-02
Size, Nominal (inch & mm) 2" (50 mm)
Shape of Speaker Other
Speaker Type Wide Range
Application Arcade Gaming, Casino Gaming, Voice Communications
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 4
Rated Power IEC268-5 (W) 2 Watts
Rated Impedance (Ω) 4
Continuous Power (W) 2
Program Power (W) 4
Frequency Range (Hz) 140 - 20,000
Sensitivity (dB SPL) ¹ 89
Resonant Frequency (Fs) (Hz) +/- 15% 341
DC Resistance (Re) (Ω) 3.3
Voice Coil Inductance (Le) (mH) 0.07
Mechanical Q Factor (Qms) 8.21
Electrical Q Factor (Qes) 3.33
Total Q Factor (Qts) 2.37
Mechanical Resistance (Rms) (kg/s) 0.332
Compliance Equivalent Volume (Vas) (L) 0.11
Suspension Compliance (Cms) (mm/N) 0.17
Surface Area of Diaphragm (Sd) (cm²) 21.7
Moving Mass (Mms) (gm) 1.3
Motor Force Factor (BL) (T•M) 1.7
Efficiency (η₀) (%) 0.13
Efficiency Bandwidth Product (EBP) (Fs/Qes) 102.5
Basket Type Stamped steel
Voice Coil Diameter (mm) 14.5288
Voice Coil Wire Material Copper
Voice Coil Winding 2 layer, round wire
Magnet Material Ferrite
Magnet Weight (g) 49.04
Cone Body Material Paper
Net Weight (kg) 0.14
Technical Notes

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