Digital Speaker RB-40004F-80R
The RB-40004F-80R digital speaker is designed to deliver high-performance audio in a compact package, suitable for a variety of digital applications. With a diameter of Φ40.0mm and a thickness of 6.3mm, it offers a balance of size and power, weighing 9.3g.
Constructed with Nd-Fe-B magnet material and featuring a Φ12.5×1.5T magnet size, this speaker has an impedance of 4 ± 15% Ohm at 1000Hz when supplied with 1V input. It boasts a power rating of 2.0W under normal conditions and can handle a
maximum power of 2.5W, ensuring reliable and robust performance.
The speaker produces a fundamental output (FO) frequency of 320±20% Hz, generating a sound pressure level (SPL) of 97±3dB across a 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 is subjected to a 2.83 Volts sine wave for 50~5kHz, with the diaphragm moving forward when a positive DC is applied to the red “+”or “Marked” terminal, ensuring correct polarity.
Operating within a wide temperature range of -40°C to +85°C, the speaker remains operational and reliable, with a storage temperature range also spanning from -40°C to +85°C. It undergoes load testing, including exposure to white noise for 96 hours at 2.0W input power.
The speaker is subjected to high and low-temperature tests at +85±2°C and -40±2°C, respectively, each lasting 96 hours, along with a humidity test at +40±2°C with arelative 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 1 M free fall on a concrete floor, repeated 10 times to evaluate its durability under impact.
Finally, a temperature cycle test is conducted at 40 + 85°C for 5 cycles to ensure its performance under extremetemperature conditions, making it suitable for use in harsh environments and demanding applications.