Digital Speaker RB-40004F-16R
The RB-20004F-16R digital speaker offers a compact and lightweight solution for various digital applications, providing high-quality audio performance. With dimensions of Φ20.0*3.6mm and weighing just 2.7g, it combines portability with efficient sound reproduction.
Featuring Nd-Fe-B magnet material and a Φ8.0×1.0T magnet size, this speaker delivers a nominal impedance of 4 ± 15% Ohm at 1000Hz when supplied with 1V input voltage. It has a power rating of 0.8W under normal conditions, with a
maximum power handling capability of 1.0W, ensuring reliable operation without compromising performance.
The speaker produces a fundamental output (FO) frequency of 650±20% Hz, achieving a sound pressure level (SPL) of 92±3dB across a wide frequency range of 20-20KHZ. Distortion is limited to a maximum of 10%, guaranteeing clear and accurate sound reproduction.
During abnormal sound tests, the speaker undergoes testing with a sine wave ranging from 50~5kHz at 1.8 Volts, ensuring correctoperation. The diaphragm moves forward when a positive DC is applied to the red “+” or “Marked” terminal, maintaining proper polarity.
Operating within a temperature range of -20°C to +50°C, the speaker remains functional and reliable, with a storage temperature range spanning from -25°C to +55°C. It undergoes load testing, including exposure to white noise for 96 hours at 0.8W input power.
The speaker is subjected to high and low-temperature tests at +55±2°C and -25±2°C,respectively, 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 assess its resilience to vibrations. Additionally, it undergoes a drop test where it is subjected to a 75 CM free fall on a concrete floor, repeated 10 times to evaluate its durability under impact.
Finally, a temperature cycletest is conducted at 25 + 65°C for 5 cycles to ensure its performance under extreme temperature conditions, making it suitable for use in various environments and demanding applications.