Oaktron by MISCO 100-MR08-02 4" 8 Ohm Mid-Range Speaker (93073)

SKU: 100-MR08-02

Canadian Dollar Price:
Sale price$51.11
In stock (9 units)


This Oaktron driver provides excellent voice and mid-range reproduction. Its treated Kevlar fiber cone resists modal break-up, causing high intelligibility and natural vocals. The 93073 is an excellent choice for line arrays, due to its compact size, power handling, and high sensitivity -- all available for both indoor and outdoor applications.

  • Mid-range speaker
  • 4" (100 mm) basket diameter
  • 40 watts, 8 ohms, 92 dB SPL
  • 1" copper voice coil, polyimide film former
  • Ferrite magnet, stamped steel basket
  • Kevlar fiber cone, pleated cloth surround

Oaktron by MISCO is a premium line of high performance, ready-to-ship raw speaker drivers for a wide variety of applications including high end home audio, 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-MR08-02
Size, Nominal (inch & mm) 4"
Shape of Speaker Square
Speaker Type Mid-Range
Application Auto / Motorcycle, Commercial, Pro Sound, Transit, Voice Communications
Environment Outdoor / Indoor
RoHS Compliant No
Nominal Impedance (Z) (Ω) 8
Rated Power IEC268-5 (W) 40 Watts
Rated Impedance (Ω) 8
Continuous Power (W) 40
Program Power (W) 80
Frequency Range (Hz) 100 - 8,500
Sensitivity (dB SPL) ¹ 92
Resonant Frequency (Fs) (Hz) 130
DC Resistance (Re) (Ω) 6.9
Voice Coil Inductance (Le) (mH) 0.35
Mechanical Q Factor (Qms) 7.64
Electrical Q Factor (Qes) 0.59
Total Q Factor (Qts) 0.55
Mechanical Resistance (Rms) (kg/s) 0.47
Compliance Equivalent Volume (Vas) (L) 2.03
Suspension Compliance (Cms) (mm/N) 0.34
Surface Area of Diaphragm (Sd) (cm²) 65.0
Moving Mass (Mms) (gm) 4.4
Magnetic Gap Height (mm) 6.0
Coil Winding Height (mm) 8.9
Maximum Linear Excursion (Xmax) (mm) 1.4
Motor Force Factor (BL) (T•M) 6.5
Efficiency (η₀) (%) 0.74
Efficiency Bandwidth Product (EBP) (Fs/Qes) 222.0
Basket Type Stamped steel, black powder coat finish
Terminal Size (mm) 5.2 x 0.5 mm
Voice Coil Diameter (mm) 25.8
Voice Coil Wire Material Copper
Voice Coil Former Material Polyimide film
Voice Coil Winding 2 layers, single voice coil
Magnet Material Ferrite
Magnet Weight (gm) 341
Cone Body Material Treated kevlar fiber
Cone Surround Material Treated pleated cloth
Dust Cap Material Treated paper
Spider Material Cloth
Net Weight (kg) 0.93
Technical Notes

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

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