LF
Fullrange
2.5"
25NFR
Code: 25NFRX8-279
Full-Range/2.5inch/Neo/Paper/20W/8ohm
Key Features
- Full-range FREQUENCY RESPONSE
- A very small form factor
- Optimized frequency response
Quick Specs
Impedance
8 Ω
Program Power
40 W
Sensitivity
82.69 dB
Fs
123.00 Hz
Magnet
Neodymium
Voice Coil
0.8 mm
Design Notes
25NFR was designed around neodymium ring magnet. The magnetic structure delivers very high level of magnetic force, while generating minimum amount of modulation distortion.
The lightweight, yet strong, paper cone with attached rubber surround was designed and optimized to deliver the highest level of performance in full-range applications.
This speaker finds its best application in columns or multi-way Hi-Fi products. Due to its excellent HF response, further usage of HF units is not required.
The small form-factor allows this product to be used in space limited applications or portable products.
The lightweight, yet strong, paper cone with attached rubber surround was designed and optimized to deliver the highest level of performance in full-range applications.
This speaker finds its best application in columns or multi-way Hi-Fi products. Due to its excellent HF response, further usage of HF units is not required.
The small form-factor allows this product to be used in space limited applications or portable products.
Specifications
General Specs
Nominal Diameter
2.5"
Rated Impedance
8 Ohm
Magnet
Neodymium
Basket Material
Steel
Power Handling
AES Power
20 W
Continuous Power
40 W
Peak Power
80 W
Voice Coil
Diameter
0.8 mm
Winding Wire
CCAW
Former
kapton
Winding Height
8.3 mm
T/S Parameters
Resonant Frequency (Fs)
123.00 Hz
Re
7.30 \u2126
Qes
0.810
Qms
5.97
Qts
0.710
Vas
0.46 liters
Sd
21.20 cm\u00B2
Mms
2.20 grams
Rms
0.29
Cms
0.7600
Bl
4.00 T\u00B7m
Le
0.090 mH
Sensitivity
82.69 dB
Design Details
Surround Material
NBR
Cone/Dome Material
Paper GF
Spider
Nomex
T-Plate
3 mm
Xmax (peak)
2.65 mm
Xmech
5.65 mm
Overall Diameter
65.00 mm
Bolt Circle Diameter
73.00 mm
Baffle Cutout Dia.
56.00 mm
Mounting Holes
4
Depth (flange to rear)
37.00 mm
Net Weight
0.18 kg
Ordering Codes
Product Code
25NFRX8-279
Downloads
Frequency Response & Impedance
2D Drawing
Enclosure Recommendations
Recommended enclosure alignments (sealed): - 1.1 liters (Qtc 0.85): compact, punchy character; system resonance approx. 146 Hz - 0.05 liters (Qtc 0.707): maximally flat Butterworth response (recommended); system resonance approx. 393 Hz - 0.05 liters (Qtc 0.6): extended response, smooth gradual rolloff; system resonance approx. 393 Hz
Frequently Asked Questions
- - Full-range FREQUENCY RESPONSE
- - A very small form factor
- - Optimized frequency response
Recommended enclosure alignments (sealed): - 1.1 liters (Qtc 0.85): compact, punchy character; system resonance approx. 146 Hz - 0.05 liters (Qtc 0.707): maximally flat Butterworth response (recommended); system resonance approx. 393 Hz - 0.05 liters (Qtc 0.6): extended response, smooth gradual rolloff; system resonance approx. 393 Hz
Column speaker arrays, multi-way Hi-Fi products, portable speakers, space-limited applications requiring genuine bass extensio
AES Power: 20 W,
Continuous: 40 W,
Peak: 80 W.
Sensitivity: 82.69 dB (1W/1m).
