<---->
The RD1238-O77 is a compact, high-performance 32Ω in-welded earphone speaker driver featuring a PU+DN composite diaphragm, with 121dB SPL, 5mW rated power, and enhanced durability across extreme temperature and humidity conditions. Ideal for precision audio applications and rugged environments.
| RD1238-O77 Speaker Driver Specifications | |
|---|---|
| Model | RD1238-O77 |
| Impedance | 32Ω ±15% (1kHz, 1mW input) |
| Rated Power | 5mW |
| Max Power | 10mW |
| Sound Pressure Level (SPL) | 121 ±1.5 dB (1kHz, 179mVrms, 711EAR) |
| Resonance Frequency | 280Hz ±20% (Free Air) |
| THD (Distortion) | ≤2.5% (50Hz–8kHz @ 1mW) |
| Rub & Buzz | No abnormal sound during sine sweep at rated input |
| Insulation Impedance | >1 MΩ @ 50V DC |
| Operating Temperature | -10°C to +65°C |
| Storage Temperature | -10°C to +65°C |
| Diaphragm Material | PU + DN Composite (40μ + 25μ) |
| Driver Size | 11.75mm |
| Shape | Round |
| Weight | Approx. 0.9g |
| Frame Material | PPA |
| Color | Transparent diaphragm, black frame |
| Packaging | 96 pcs/tray, 50 trays/carton, 4800 pcs/ctn |
SpeakerDriver™
by Cockatwo Private Limited
CIN: U62013RJ2023PTC091507
Manufacturing Unit: Yongsheng Industrial Park 523510, Dongshan, Qishi, Dongguan, China