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The Dayton Audio CE81PF-8 is a 7.62cm (3") full-range speaker, with an impedance of 8 Ω and a power handling of 15 W, designed for installations where space and budget are limited. Its compact format allows integration into small enclosures, while its full-range design ensures signal reproduction without requiring filtering between multiple drivers.
Intended for DIY projects as well as commercial applications, it can be used for background sound reinforcement in stores, small-scale installations, or vocal reinforcement in a meeting room. It is thus a compact option for manufacturers and integrators looking for a versatile driver for uses where footprint and cost must remain under control.

Technical characteristics
| Specifications | |
|---|---|
| Product type | Full-range |
| Impedance | 8Ω |
| Sensitivity | 84dB 2.83V/1m |
| Frequency response | 80Hz-18kHz |
| Voice coil diameter | 1.98cm (0.78") |
| Nominal diameter | 7.62cm (3") |
| Power | RMS: 15W MAX: 30W |
| Thiele-Small parameters | |
|---|---|
| Resonance frequency (Fs) | 97Hz |
| Cone surface area (Sd) | 28.3cm² |
| Voice coil inductance (LE) | 0.14mH |
| DC resistance (Re) | 6.7Ω |
| Mechanical quality coefficient (Qms) | 7.92 |
| Electromagnetic quality coefficient (Qes) | 0.9 |
| Total quality coefficient (Qts) | 0.81 |
| Force factor (BL) | 3.72T·m |
| Total moving mass + air load on the cone (Mms) | 3g |
| Mechanical compliance of suspension (Cms) | 0.889mm/N |
| Compliance equivalent volume (Vas) | 0.03ft³ |
| Max linear excursion (Xmax) | 2.7mm |
| Mounting informations | |
|---|---|
| Cutout diameter | 2.7" |
| Depth | 2" |
| Number of mounting holes | 4 |
| Total external diameter | 3.75" |
| Materials | |
|---|---|
| Diaphragm | Paper |
| Magnet | Ferrite |
| Frame | Steel |
| Surround | Rubber |
| General | |
|---|---|
| Weight | 550g |
| Package | Sold individually |
| Speaker Power (W RMS) | 15.0 |
| Speaker Type | Full range |
| Impedance (Ω) | 8 |
| Loudspeaker diameter (mm) | 76.2 |
| Diaphragm type | Paper |
| Efficiency / Sensitivity (dB) | 84.0 |
| Max Linear Excursion (Xmax) (mm) | 2.7 |
| Lowest frequency (Hz) | 80 |
| Highest frequency (Hz) | 18000 |