2.25" (57 mm) Kevlar Cone, Wide Band Speaker

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

This wide range speaker provides high output and sensitivity from a small footprint. A woven Kevlar cone with treated half roll cloth edge provides extended frequency response and durability in a wide variety of applications.  It is also an excellent choice for applications requiring extended frequency range such as gaming audio, Ultra-Sound audio, and broad range music or voice.

  • Powerful Maximum Energy (ME) Neodymium Magnet
  • 20 Watts, Program Power
  • Half roll, fabric surround for quicker response
  • Black Powder Coated Steel Basket
  • Copper Voice Coil construction

This front or rear mountable* wide range speaker is a great choice to pair with a sub-woofer and cross-over at 200 Hz.  It also a great replacement or upgrade driver.

*This speaker is front or rear panel mountable, but because its half-roll surround extends beyond the frame, a speaker grille placement cannot be flush to the speaker frame.

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 # 57-WB08-1
Size, Nominal (inch & mm) 2.25" (57 mm)
Shape of Speaker Square
Speaker Type Wide Band
Application Aerospace, Arcade Gaming, Casino Gaming, Home Audio, Kiosk, Medical, Musical Instruments, Transit, Voice Communications
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 8
Rated Power IEC268-5 (W) 10 Watts
Rated impedance (Ω) 8
Power, Continuous (W) 10
Power, Program (W) 20
Frequency range (Hz) 140 - 18,000
Sensitivity (dB SPL) ¹ 80
Resonant Frequency (Fs) (Hz) 167
DC resistance (Re) (Ω) 7.3
Voice Coil Inductance (Le) (mH) 0.16
Mechanical Q factor (Qms) 2.35
Electrical Q Factor (Qes) 0.77
Total Q factor (Qts) 0.58
Mechanical Resistance (Rms) (kg/s) 0.91
Compliance equivalent volume (Vas) (L) 0.15
Suspension Compliance (Cms) (mm/N) 0.45
Surface area of diaphragm (Sd) (cm²) 15.21
Moving mass (Mms) (gm) 2.04
Magnetic Gap Height (mm)
Coil winding height (mm)
Maximum linear excursion (Xmax) (mm)
Motor Force Factor (BL) (T•M) 4.5
Efficiency (η₀) (%) 0.09
Efficiency Bandwidth Product (EBP) (Fs/Qes) 217.21
Basket type Stamped Steel with black powder coat
Terminal size (+) 5.2 x 0.5mm / (-) 2.8 x 0.5mm
Voice coil diameter (mm) 20.3 (0.80")
Voice coil wire material Copper Clad Aluminum wire
Voice coil former material Kapton
Voice Coil Winding Single coil, two Layer
Magnet Material Dual Neodymium
Magnet weight (gm) 2 x 17 (2 x 0.60 ounces)
Cone body material Woven Kevlar Fiber
Cone surround material Convex Half Roll Rubber
Dust cap material Treated Cloth Surround
Spider Material Conex
Net weight (kg) 0.132 kg
Technical Notes

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

This speaker is a front or rear panel mountable, but it does have an over hang, half roll surround and therefore grille placement cannot be flush to the gaske