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The Dayton Audio CF18N-4 tweeter speaker combines cutting-edge technology and ergonomics thanks to a compact form factor that facilitates implementation in a three-way project or confined spaces such as a car without sacrificing high-fidelity sound reproduction. It features a woven carbon fiber cone that ensures excellent transient response and clarity, enabling accurate high-frequency reproduction. In addition, the CF18N-4 offers excellent off-axis response thanks to its small cone and sculpted aluminum faceplate. Its powerful neodymium motor allows for a smaller size without sacrificing performance. A reinforced and dampened rear chamber improves the CF18N-4's acoustic performance by minimizing unwanted resonances for smooth response and low distortion. It comes with a protective grille, shielding the delicate diaphragm from damage, making the CF18N-4 a practical choice for a variety of environments. It is the tweeter of choice for anyone looking for exceptional sound in a compact package.
Summary of the main advantages of the DAYTON AUDIO CF18N-4

Technical characteristics
| Specifications | |
|---|---|
| Product type | Speaker |
| Speaker type | Tweeter |
| Nominal diameter | Ø50mm |
| Membrane material | Woven carbon fiber |
| Handling power | 40Wrms |
| Impedance | 4Ω |
| Frequency response | 2500Hz-20kHz |
| Sensitivity | 90dB 2.83V/1m |
| Thiele-Small parameters | |
|---|---|
| Resonance frequency (Fs) | 1100Hz |
| DC resistance (Re) | 3.54 ohms |
| Coil Inductance (Le) | 0.01 mH @ 10 kHz |
| Mechanical quality coefficient (Qms) | 2.0 |
| Electrical quality factor (Qes) | 3.1 |
| Total quality coefficient (Qts) | 1.2 |
| Membrane surface area (Sd) | 2.55 cm² |
| Coil diameter | Ø18mm |
| General | |
|---|---|
| Package | 1x DAYTON AUDIO CF18N-4 |
| Speaker Power (W RMS) | 40.0 |
| Speaker Type | Dome tweeter |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 50.0 |
| Diaphragm type | Carbon fiber |
| Efficiency / Sensitivity (dB) | 90.0 |
| Max Linear Excursion (Xmax) (mm) | N/A |
| Lowest frequency (Hz) | 25 |
| Highest frequency (Hz) | 20000 |