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Dayton Audio has added a waveguide faceplate to the popular ND25 soft dome to create the ND25FW-4 tweeter. The waveguide faceplate controls dispersion to minimize ceiling and wall reflections, which in turn leads to an increase in efficiency across most of the passband.

Key Features

Compatible Jig Insert.  TJ-2-105

  • Waveguide loaded 1" treated silk dome
  • Waveguide provides controlled directivity and higher efficiency
  • Low Fs of 1,350 Hz can accommodate crossovers as low as 2,500 Hz
  • Includes foam gasket to ensure a good seal to your enclosure
  • High-strength neodymium motor with heatsink and ferrofluid cooling
  • Standard 104 mm diameter faceplate for easy integration into many existing systems
BrandDayton Audio
Part Number275-051
Unit of MeasureEach

Product Specifications

Cone / Dome Diameter1"
Cutout Diameter2.875
Tweeter TypeSoft Dome
Power Handling (RMS)20 Watts
Frequency Response2,500 to 20,000Hz
Sensitivity91dB 2.83V/1m

Thiele-Small Parameters

Resonant Frequency (Fs)1350Hz
DC Resistance (Re)3.2Ω
Voice Coil Inductance (Le)0.04mH

Mounting Information

Overall Outside Diameter4.09"

Dayton Audio ND25FW-4 1" Soft Dome Neodymium Tweeter with Waveguide 4 Ohm

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