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
Brand
Dayton Audio
Model
ND25FW-4
Part Number
275-051
UPC
848791002014
Unit of Measure
Each
Weight
0.35
Product Specifications
Cone / Dome Diameter
1"
Cutout Diameter
2.875
Tweeter Type
Soft Dome
Power Handling (RMS)
20 Watts
Impedance
4Ω
Frequency Response
2,500 to 20,000Hz
Sensitivity
91dB 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 Diameter
4.09"
Depth
1.57"