6.5 Inch (165 mm) 4 Ohm, Premium Woofer

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

This premium 6.5" Oaktron woofer was engineered for high quality two-way systems.  Its robust die cast aluminum basket supports an Abaca fiber cone with a molded NBR half-roll surround for a smooth frequency response and warm timbre.  The voice coil is four layers of copper to provide a gradual roll-off.  A dual dust cap system provides additional stability in the critical cross-over region.

  • Woofer
  • 6.5" (165 mm) basket diameter
  • 50 watts, 4 ohms, 87 dB SPL
  • 1.5" aluminum voice coil, polyimide film former
  • Engineered Abaca fiber cone, molded rubber surround

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.

Pair this woofer with one of our MISCO Amplifiers.

Download Product Specifications (PDF) »

More Information
Brand Name Oaktron by MISCO
Model # 165-WF04-01
Size, Nominal (inch & mm) 6" (152 mm)
Shape of Speaker Round
Speaker Type Woofer
Application High-End Audio and Home Theater, Home Audio, Indoor
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 4
Rated Power IEC268-5 (W) 50 Watts
Rated Impedance (Ω) 4
Continuous Power (W) 50
Program Power (W) 100
Frequency Range (Hz) 36 - 4,000
Sensitivity (dB SPL) ¹ 87
Resonant Frequency (Fs) (Hz) +/- 15% 41
DC Resistance (Re) (Ω) 4.0
Voice Coil Inductance (Le) (mH) 0.76
Mechanical Q Factor (Qms) 7.69
Electrical Q Factor (Qes) 0.42
Total Q Factor (Qts) 0.4
Mechanical Resistance (Rms) (kg/s) 0.70
Compliance Equivalent Volume (Vas) (L) 17.57
Suspension Compliance (Cms) (mm/N) 0.73
Surface Area of Diaphragm (Sd) (cm²) 130.7
Moving Mass (Mms) (gm) 21.1
Magnetic Gap Height (mm) 6.4
Coil Winding Height (mm) 18.8
Maximum Linear Excursion (Xmax) (mm) 6.2
Motor Force Factor (BL) (T•M) 7.2
Efficiency (η₀) (%) 0.27
Efficiency Bandwidth Product (EBP) (Fs/Qes) 96.9
Basket Type Die cast aluminum with black powder coat
Terminal Size (mm) 6.3 x 0.8 mm /4.7 x 0.5 mm
Voice Coil Diameter (mm) 38.7
Voice Coil Wire Material Copper clad aluminum
Voice Coil Former Material Polyimide film
Voice Coil Winding Single coil, 4 layer
Magnet Material Ferrite
Magnet Weight (g) 568
Cone Body Material Engineered abaca fiber
Cone Surround Material Molded rubber
Dust Cap Material Treated cloth
Spider Material Conex
Net Weight (kg) 2.1
Technical Notes

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