3 Inch x 5 Inch (77 mm x 127 mm) 4 Ohm, Wide Range Speaker

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

High intelligibility for your two-way radio system: The 93088 wide range speaker driver delivers the clear sound you need for any trusted communications application, sporting a design to emit strong voice fundamentals, and a high-energy neodymium magnet to produce powerful results. Fit this 3” x 5” driver into compact enclosures, thanks to a slim, oval shaped steel frame.

  • Wide range speaker
  • 3” x 5” (77 mm x 127 mm) basket diameter
  • 15 watts, 4 ohms, 90 dB SPL
  • 0.8" copper voice coil, aluminum former
  • Neodymium magnet, stamped steel basket
  • Paper cone, treated 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.   

Download Product Specifications (PDF) »

More Information
Brand Name Oaktron by MISCO
Model # 77X127-VB04-01
Size, Nominal (inch & mm) 3" Oval (77 mm)
Shape of Speaker Oval
Speaker Type Wide Range
Application Voice Communications
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 4
Rated Power IEC268-5 (W) 15 Watts
Rated Impedance (Ω) 4
Continuous Power (W) 15
Program Power (W) 30
Frequency Range (Hz) 100 - 20,000
Sensitivity (dB SPL) ¹ 90
Resonant Frequency (Fs) (Hz) +/- 15% 230
DC Resistance (Re) (Ω) 3.1
Voice Coil Inductance (Le) (mH) 0.07
Mechanical Q Factor (Qms) 3.09
Electrical Q Factor (Qes) 1.27
Total Q Factor (Qts) 0.9
Mechanical Resistance (Rms) (kg/s) 1.61
Compliance Equivalent Volume (Vas) (L) 0.81
Suspension Compliance (Cms) (mm/N) 0.14
Surface Area of Diaphragm (Sd) (cm²) 64.3
Moving Mass (Mms) (gm) 3.4
Magnetic Gap Height (mm) 2.78
Coil Winding Height (mm) 4.9
Maximum Linear Excursion (Xmax) (mm) 1.00
Motor Force Factor (BL) (T•M) 3.5
Efficiency (η₀) (%) 0.75
Efficiency Bandwidth Product (EBP) (Fs/Qes) 181.7
Basket Type Stamped steel
Terminal Size (mm) Solder lugs
Voice Coil Diameter (mm) 19.38
Voice Coil Wire Material Copper
Voice Coil Former Material Aluminum
Voice Coil Winding 2 layer, round wire
Magnet Material Neodymium
Magnet Weight (g) 11.62
Cone Body Material Paper
Cone Surround Material Treated cloth
Dust Cap Material Paper
Technical Notes

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