1" (25 mm) Premium Conical Waveguide Tweeter with Rear Chamber

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

This Oaktron one-inch silk dome tweeter is an ideal choice for two-way speaker systems. It features a conical wave guide design for smoother frequency response, especially off-axis. Its large rear chamber promotes better low-frequency extension, allowing it to be crossed-over at lower frequencies*. It is the perfect choice for use in two-way systems with a 6.5" or 8" woofer. A powerful neodymium motor structure allows for both high electrical damping and sensitivity. The faceplate features recessed mounting (standard) holes to minimize reflections (diffraction) from mounting screws. Convenient 4-hole mounting.

  • Black, silk one-inch dome
  • Focused field waveguide for smooth and extended off-axis response
  • High temperature, copper clad aluminum coil wound on a vented aluminum former
  • Maximum Energy (ME) neodymium magnet motor
  • 40 Watts, program power

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 confirm the speaker's design, as well as the Klippel QC module to ensure perfect unit to unit consistency and reliability.  

* Note: Protect your system's tweeters! Allowing lower frequencies to reach a tweeter will likely damage the tweeter. You must use a passive or active high-pass filter (crossover) with this tweeter. Use a simple first order (6 dB/octave) of a (proper value) capacitor to block low frequencies from reaching the tweeter. Better yet, use a more sophisticated crossover using a capacitor and an inductor to achieve steeper low-frequency filtering of 12dB per octave. See the specifications of this tweeter for the smallest recommended crossover frequency.     

This tweeter is ideal for use in a wide variety of applications including: 

  • Home audio systems
  • Home theater systems
  • Automotive and motorcycle audio speakers
  • Arcade speakers
  • Casino gaming cabinets
  • Smart devices and speakers

Download Product Specifications (PDF) »

More Information
Brand Name Oaktron by MISCO
Model # 25-TD04-02
Size, Nominal (inch & mm) 1" (25 mm)
Shape of Speaker Round
Speaker Type Tweeter
Application High-End Audio and Home Theater, Indoor, Musical Instruments, Pro Sound
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 4
Rated Power IEC268-5 (W) 20 Watts
Rated impedance (Ω) 4
Power, Continuous (W) 20
Power, Program (W) 40
Frequency range (Hz) 700 - 20,000
Sensitivity (dB SPL) ¹ 87
Resonant Frequency (Fs) (Hz) 735
DC resistance (Re) (Ω) 3.6
Voice Coil Inductance (Le) (mH) 0.03
Mechanical Q factor (Qms) 1.16
Electrical Q Factor (Qes) 1.29
Total Q factor (Qts) 0.61
Mechanical Resistance (Rms) (kg/s) 1.28
Compliance equivalent volume (Vas) (L) 0.01
Suspension Compliance (Cms) (mm/N) 0.15
Surface area of diaphragm (Sd) (cm²) 7.07
Moving mass (Mms) (gm) 0.32
Motor Force Factor (BL) (T•M) 2.1
Efficiency (η₀) (%) 0.31
Efficiency Bandwidth Product (EBP) (Fs/Qes) 571.83
Basket type ABS plastic mounting plate and rear chamber
Terminal size 4.7 x 0.5 mm
Voice coil diameter (mm) 25
Voice coil wire material Copper clad aluminum
Voice coil former material Aluminum
Voice Coil Winding Single coil, two layer
Magnet Material Neodymium
Cone body material Single piece, treated silk dome - Black
Cone surround material Single piece, treated silk dome - Black
Net weight (kg) 0.09
Technical Notes

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