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The Dayton Audio CE30P-4 is a miniature full-range speaker designed for compact applications requiring quality sound reproduction despite limited available space. With a diameter of only 1-1/4" (Ø31.75 mm) and a diaphragm area of 4.1cm², it features a paper cone, a rubber surround, and a powerful dual neodymium magnet motor system providing excellent efficiency in an extremely compact format. Compatible with a 4Ω load, it supports a continuous power handling of 2W RMS (4W max) and offers a sensitivity of 81dB (2.83V/1m) as well as a frequency response ranging from 280Hz to 14kHz. Its circular injection-molded plastic frame is specifically designed for press-fit or adhesive mounting, making it easy to integrate into numerous electronic and multimedia projects. Thanks to its low 14.5mm depth, 13mm voice coil, 336Hz resonant frequency, and maximum linear excursion of 0.3mm, the CE30P-4 is an ideal solution for compact multimedia speakers, portable player docking stations, televisions, soundbars, and other embedded audio devices requiring a high-performance and economical miniature speaker.

With an external diameter of only 31.75mm, a recommended cutout diameter of 30.2mm, and a depth of 14.5mm, the CE30P-4 easily fits into the most confined spaces. Its robust injection-molded plastic frame allows quick press-fit or adhesive mounting, providing great flexibility for designers and integrators.
The Dayton Audio CE30P-4 combines a lightweight paper cone with a rubber surround and a high-energy dual neodymium magnet structure. This design ensures dynamic and detailed sound reproduction while maintaining excellent cone control despite the transducer's particularly compact dimensions.
Designed for embedded applications and consumer electronic devices, the CE30P-4 is perfectly suited for multimedia speakers, televisions, compact soundbars, portable audio systems, and other projects requiring a miniature full-range speaker. Its 4Ω impedance, extended frequency response up to 14kHz, and low power consumption make it a versatile and economical solution.
Technical specifications
| Specifications | |
|---|---|
| Product type | Miniature full-range speaker |
| Nominal diameter | Ø2.54cm (1") |
| Power | RMS: 2W Max: 4W |
| Impedance | 4Ω |
| Frequency response | 280Hz - 14000Hz |
| Sensitivity | 81dB 2.83V/1m |
| Voice coil diameter | Ø12.954mm (0.51") |
| Thiele-Small Parameters | |
|---|---|
| Resonant frequency (Fs) | 336Hz |
| DC resistance (Re) | 3.4Ω |
| Voice coil inductance (Le) | 0.19mH |
| Mechanical quality factor (Qms) | 3.62 |
| Electromagnetic quality factor (Qes) | 1.03 |
| Total quality factor (Qts) | 0.8 |
| Equivalent air volume of the moving mass compliance (Vas) | 0.00028ft³ |
| Mechanical compliance of the suspension (Cms) | 0.34mm/N |
| Force factor (BL) | 2.16T·m |
| Maximum linear excursion (Xmax) | 0.3mm |
| Diaphragm surface area (Sd) | 4.1cm² |
| Materials | |
|---|---|
| Cone material | Coated paper |
| Surround material | Rubber |
| Magnet material | Neodymium |
| Mounting information | |
|---|---|
| Overall external diameter | Ø31.75mm (1.25") |
| Cutout diameter | Ø30.2mm (1.19") |
| Depth | Ø14.5mm (0.57") |
| Recommended enclosure volume | |
|---|---|
| Sealed enclosure | 0.0135L (0.000478ft³) |
| F3 Sealed enclosure | 372.2Hz |
| Bass reflex enclosure | 0.0306L (0.00108ft³) |
| F3 Bass reflex enclosure | 179Hz |
| Speaker Power (W RMS) | 4.0 |
| Speaker Type | Full range |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 25.4 |
| Diaphragm type | Paper |
| Efficiency / Sensitivity (dB) | 81.0 |
| Max Linear Excursion (Xmax) (mm) | 0.3 |
| Lowest frequency (Hz) | 280 |
| Highest frequency (Hz) | 14000 |