Midsize Soundbox RB-4509CM08

The Midsize Speaker Model RB-4509CM08 is a compact, high-efficiency soundbox speaker with a diameter of 45mm and a thickness of 9.0mm, weighing 11g. It utilizes an Nd-Fe-B magnet (Φ12.5x2T) and has an impedance of 8±15% Ohm at 1000Hz. Designed for consistent performance, it has a normal power rating of 2W and a maximum of 2.5W, with a frequency range of F0~20,000Hz and an FO of 640±20% Hz. The speaker delivers a sensitivity of 99±3dB with distortion capped at 5% maximum. It maintains normal

operation with a 4.0 volts sine wave and confirms diaphragm movement with a positive DC applied. The robust design includes high-temperature endurance at +65±2°C for 96 hours, low-temperature resistance at -25±2°C for 96 hours, and humidity tolerance at +40±2°C with 90~95% relative humidity for 96 hours. It also undergoes rigorous vibration tests at 30±15 Hz with a 1.5 mm amplitude for 2 hours per axis and drop tests from a height of 1 meter on a concrete floor, 19 times. The speaker iscapable of withstanding 25 + 65°C temperature cycles over 5 cycles and performs under white noise load tests for 96 hours at 2.0W input power. The minimum order quantity (MOQ) for this speaker is 10,000 units.