Digital Speaker RB-28150F-012R
The RB-28150F-012R digital speaker is designed to provide high-quality audio performance in various digital applications. With a diameter of Φ28mm and a thickness of 3.6mm, it offers a balance between compactness and efficiency. Weighing 7.0g, it strikes a balance between portability and durability.
Constructed with Nd-Fe-B magnet material and a magnet size of Φ12.5×1.2T, this speaker offers an impedance of 150 ± 15% Ohm at 1000Hz when supplied with 1V input voltage. It has a power rating
of 0.2W under normal conditions, with a maximum power handling capability of 0.5W, ensuring clear and crisp sound output.
The speaker's fundamental output (FO) frequency is 510±20% Hz, accompanied by a sound pressure level (SPL) of 93±3dB across a wide frequency range of 300-20KHZ. With distortion limited to a maximum of 10%, it delivers distortion-free sound reproduction for an immersive listening experience.
During abnormal sound tests, the speaker undergoes rigorous testing with a sinewave ranging from 50~5kHz at 5.48 Volts to ensure optimal performance. The diaphragm moves forward when a positive DC is applied to the red “+” or “Marked” terminal, ensuring correct polarity for proper operation.
Operating within a temperature range of -20°C to +55°C, the speaker remains functional and reliable even in varying temperature conditions. It has a corresponding storage temperature range from -25°C to +65°C, ensuring its longevity and performance over time.
The speakerundergoes load testing, including exposure to white noise for 96 hours at 1.0W input power. Additionally, it endures high-temperature tests at +65±2°C and low-temperature tests at -25±2°C, each lasting 96 hours, along with a humidity test at +40±2°C with a relative humidity of 90~95% for 96 hours.
Vibration tests involve subjecting the speaker to a frequency of 30±15 Hz with an amplitude of 1.5 mm for 2 hours per axis (x, y, z axis) to evaluate its resilience to vibrations. Furthermore,it undergoes a drop test where it is subjected to a 1 M free fall on a concrete floor, repeated 10 times to assess its durability under impact.
Additionally, the speaker must pass a temperature cycle test involving exposure to temperatures ranging from 25°C to +65°C, repeated for 5 cycles, to ensure its reliability under temperature variations. Overall, the RB-28150F-012R digital speaker is engineered to meet the demands of modern digital audio applications with reliability and performance.