10" (250 mm) 4 Ohm, Legacy Woofer

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

We brought this woofer back to life to help out people who need to keep their old stereo's going.  But this woofer has a lot to offer today's market. It was designed for music and to be installed into three-way or two-way system enclosures. Its high sensitivity gives you more output per watt. This cone is made from a vintage USA tool and pulp formula that creates a warm timbre one doesn't find in many of today's cones. The polyether foam surround is both compliant and super light weight so as to not dampen the bass transients.  Old school.

  • Black powder coated, stamped steel basket 
  • Copper voice coil wound on a polyimide film bobbin.
  • 100 Watts, program power
  • Light weight, half-roll foam surround
  • Vintage cone pulp and tooling - the cone is made in the USA
  • 28 oz HE (High Energy) Ferrite magnet

MISCO engineers test and analyze the performance of these speakers using the world's most sophisticated loudspeaker measurement systems including the Klippel Analyzer and the Klippel QC, 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 # 250-WF04-01
Height 7.0000
Width 11.0000
Length 11.0000
Size, Nominal (inch & mm) 10" (250 mm)
Shape of Speaker Round
Speaker Type Woofer
Application Home Audio
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 4
Rated Power IEC268-5 (W) 50 Watts
Rated impedance (Ω) 4
Power, Continuous (W) 50
Power, Program (W) 100
Frequency range (Hz) 16 - 4,000
Sensitivity (dB SPL) ¹ 92
Resonant Frequency (Fs) (Hz) 28
DC resistance (Re) (Ω) 3.8
Voice Coil Inductance (Le) (mH) 0.82
Mechanical Q factor (Qms) 11.95
Electrical Q Factor (Qes) 0.36
Total Q factor (Qts) 0.35
Mechanical Resistance (Rms) (kg/s) 0.43
Compliance equivalent volume (Vas) (L) 181
Suspension Compliance (Cms) (mm/N) 1.11
Surface area of diaphragm (Sd) (cm²) 340
Moving mass (Mms) (gm) 29.3
Motor Force Factor (BL) (T•M) 7.4
Efficiency (η₀) (%) 1.0
Efficiency Bandwidth Product (EBP) (Fs/Qes) 77
Basket type Heavy-duty American stamped steel, black powder coat
Terminal size 5.2 x 0.5 mm (0.205 x 0.020")
Voice coil diameter (mm) 38.7
Voice coil wire material Copper
Voice coil former material Polyimide film
Voice Coil Winding Single Coil, two layers
Magnet Material Ferrite
Magnet weight (gm) 792 (28 oz)
Cone body material Engineered American pulp
Cone surround material Polyether foam
Dust cap material Treated cloth
Spider Material cotton
Net weight (kg) 2.9
Technical Notes

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