Digital Speaker RB-2822004G-007AHF-C1
The RB-2822004G-007AHF-C1 digital speaker boasts a cylindrical design with dimensions of Φ34.0*22.2*7.1mm and a lightweight construction, weighing 5.2g. It is crafted from Nd-Fe-B magnet material, featuring a magnet size of Φ9.5×1.2T. Operating with an impedance of 4 ± 15% Ohm at 2000Hz and a power rating of 2.0W normal and 2.5W maximum, this speaker delivers a frequency output (FO) of 900±20% Hz and achieves a sound pressure level (SPL) of 95±3dB over a frequency range of 20-20KHZ.
Distortion is limited to a maximum of 10%. Abnormal sound tests are conducted using 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.
The speaker is designed to operate within a temperature range of -25°C to +65°C and can be stored within the same range to maintain optimal performance. Load testing involves subjecting it to white noise for 96 hours at 2W input power,followed by high and low-temperature tests conducted at +65±2°C and -25±2°C respectively, each lasting 96 hours. A humidity test is performed at +40±2°C with a relative humidity of 90~95% for 96 hours.
Vibration tests are conducted at 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. Drop tests involve subjecting the speaker to a 1 M free fall on a concrete floor, repeated 10 times to assess its durabilityunder impact. Additionally, the speaker undergoes a temperature cycle test at 25 + 65°C for 5 cycles to ensure its performance under varying temperature conditions.