12" (305 mm) Pro-Audio Woofer

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

This 175-Watt woofer has a durable black powder coat, on a die cast aluminum frame, which prevents flexing at high power. The cone is a made from acoustic ribbed engineered paper stock for high rigidity. The accordion cloth compliance surround provides both stability and extended long-term use. A corrugated conex spider provides high linearity of compliance in both directions and includes sewn in tinsel leads for long term reliability. The voice coil uses high temperature edge wound copper on a polyimide film form for maximum thermal control. The vented magnet structure allows cooling needed to reduce power compression. 

  • 350 watt maximum power handling,
  • Huge (HE) 3-1/2 pound ferrite magnet
  • Edge wound, 2.5" voice coil wound on polyimide film
  • Gold plated, knurled compression terminals
  • Acoustic ribbed engineered paper cone body

MISCO engineers test analysis reports are created, in part with the support of world's most definitive Klippel Analytics, which are used to validate final design.  Oaktron by MISCO is the premium line of high performance, ready-to-ship transducers for a wide variety of applications including high fidelity, musical instrument, automotive 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.

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More Information
Brand Name Oaktron by MISCO
Model # 305-WF08-02
Height 7.0000
Width 13.0000
Length 13.0000
Size, Nominal (inch & mm) 12" (305 mm)
Shape of Speaker Round
Speaker Type Woofer
Application Auto / Motorcycle, Pro Sound
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 8
Rated Power IEC268-5 (W) 175 Watts
Rated impedance (Ω) 8
Power, Continuous (W) 175
Power, Program (W) 350
Frequency range (Hz) 30 -1,000
Sensitivity (dB SPL) ¹ 96
Resonant Frequency (Fs) (Hz) 45
DC resistance (Re) (Ω) 6.5
Voice Coil Inductance (Le) (mH) 0.91
Mechanical Q factor (Qms) 2.15
Electrical Q Factor (Qes) 0.48
Total Q factor (Qts) 0.38
Mechanical Resistance (Rms) (kg/s) 6.50
Compliance equivalent volume (Vas) (L) 105.03
Suspension Compliance (Cms) (mm/N) 0.26
Surface area of diaphragm (Sd) (cm²) 539
Moving mass (Mms) (gm) 49.7
Magnetic Gap Height (mm) 8.0
Coil winding height (mm) 19.0
Maximum linear excursion (Xmax) (mm) 5.5
Motor Force Factor (BL) (T•M) 14.1
Efficiency (η₀) (%) 1.89
Efficiency Bandwidth Product (EBP) (Fs/Qes) 94
Basket type Die cast aluminum with a black powder coat
Terminal size Knurled push-type spring connectors
Voice coil diameter (mm) 63.5 (2.5")
Voice coil wire material Copper
Voice coil former material Polyimide film
Voice Coil Winding Single Layer, edge wound
Magnet Material Ferrite
Magnet weight (gm) 1562 (56 oz)
Cone body material Engineered and treated paper pulp
Cone surround material Pre-treated Accordion cloth
Dust cap material Engineered and treated paper pulp
Spider Material Conex with woven in tinsel
Net weight (kg) 5.75