25TF 25TF
HF Tweeter 1"

25TF

Code: 25TFX4-431B

Dome Tweeter/1.0inch/Ferrite/silk/10W/4ohm

Key Features

  • low resonant frequency, high SPL
  • smooth frequency response
  • easy crossover design possible

Quick Specs

Impedance

4 Ω

Program Power

20 W

Sensitivity

89.50 dB

Fs

1000.00 Hz

Magnet

Ferrite

Voice Coil

25.4 mm

Design Notes

25TF ferrite based tweter was design for high quality audio applications. It sports single piece poly-silk dome, formed together with surround. Furthermore, the magnetic system and dome sub-assembly is inbuilt into carrier that is later further assembled with our waveguide.
The magnetic circuit delivers robust and consistent B field. Its design has been FEM optimized and features small resonant chamber. All metal parts are coated for weather protection.
The dome is carefully attached to CCAW winding voice coil, wound on a Kapton former. Our precission adhesive dispensing ensures consistency and reliability of all our products.
This version of 25TF style tweeter shares all components with aluminum dome version 25TF. The difference is only the dome itself. While aluminum dome delivers crisp HF, the poly-silk dome is dampened in the high frequencies and has a smoother roll off. Each version has its own application, that perhaps depends on personal preferences of the audio engineer.
The best application of this device is in studio monitors, 2-way Hi-Fi systems as well as outdoor products.

Specifications

General Specs

Nominal Diameter 1"
Rated Impedance 4 Ohm
Magnet Ferrite
Basket Material Plastic

Power Handling

AES Power 10 W
Continuous Power 20 W
Peak Power 40 W

Voice Coil

Diameter 25.4 mm
Winding Wire CCAW
Former Aluminum
Winding Height 1.6 mm

T/S Parameters

Resonant Frequency (Fs) 1000.00 Hz
Re 3.80 \u2126
Sensitivity 89.50 dB

Design Details

Surround Material Silk
Cone/Dome Material Silk
T-Plate 3 mm
Overall Diameter 103.50 mm
Bolt Circle Diameter 93.50 mm
Mounting Holes 4
Depth (flange to rear) 34.20 mm
Net Weight 0.52 kg

Ordering Codes

Product Code 25TFX4-431B

Frequency Response & Impedance

Frequency response of 25TF

2D Drawing

2D drawing of 25TF

Frequently Asked Questions

  • - low resonant frequency, high SPL
  • - smooth frequency response
  • - easy crossover design possible
AES Power: 10 W, Continuous: 20 W, Peak: 40 W. Sensitivity: 89.50 dB (1W/1m).

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