12 Inch (305 mm) 4 Ohm, Dual Magnet Subwoofer

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

The 93059 12” subwoofer has a high-controlled suspension, a high tensile-strength spider, and 2” voice coil to ensure impressive bass performance and high-power handling in vented enclosures. A black steel frame, polypropylene cone, rubber surround, and dual ferrite magnet give this driver a professional look to match its design, while still outputting reliable and smooth bass to fit your listening needs.

  • Subwoofer
  • 12” (533 mm) basket diameter
  • 150 watts, 4 ohms, 89 dB SPL
  • 2" copper voice coil, Kapton former
  • Dual ferrite magnet, stamped-steel basket
  • Polypropylene cone, rubber 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 # 305-SW04D-01
Size, Nominal (inch & mm) 12" (305 mm)
Shape of Speaker Round
Speaker Type Subwoofer
Application Auto / Motorcycle, High-End Audio and Home Theater
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 4
Rated Power IEC268-5 (W) 150 Watts
Rated Impedance (Ω) 4
Continuous Power (W) 150
Program Power (W) 300
Frequency Range (Hz) 20 - 200
Sensitivity (dB SPL) ¹ 89
Resonant Frequency (Fs) (Hz) +/- 15% 20
DC Resistance (Re) (Ω) 4.1
Voice Coil Inductance (Le) (mH) 2.87
Mechanical Q Factor (Qms) 5.91
Electrical Q Factor (Qes) 0.22
Total Q Factor (Qts) 0.21
Mechanical Resistance (Rms) (kg/s) 2.3
Compliance Equivalent Volume (Vas) (L) 245.15
Suspension Compliance (Cms) (mm/N) 0.58
Surface Area of Diaphragm (Sd) (cm²) 547.4
Moving Mass (Mms) (gm) 106.7
Magnetic Gap Height (mm) 9.5
Coil Winding Height (mm) 19.8
Maximum Linear Excursion (Xmax) (mm) 5.1
Motor Force Factor (BL) (T•M) 15.0
Efficiency (η₀) (%) 0.90
Basket Type Stamped steel
Terminal Size (mm) 4.7 x 0.5 mm
Voice Coil Diameter (mm) 51.31
Voice Coil Wire Material High temperature copper
Voice Coil Former Material Kapton
Voice Coil Winding 2 layers, round wire
Magnet Material Ferrite
Magnet Weight (g) 2154.6
Cone Body Material Polypropylene
Cone Surround Material Rubber
Dust Cap Material Polypropylene
Net Weight (kg) 5.14
Technical Notes

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