古铜盆喇叭型号：HP052-4U-0177D-A规格：φ52mm4Ω3W 烤黑反边支架PU盆

• Size： D 64 mm H 31 mm
• Impedance： 4 ±20% Ω
• SPL(1W 1m sine wave) 87 ±3dB(at 800,1000.,1200,1500Hz )
• Resonance frequency 135 ±20% Hz
• Frequency Range Fo~10KHz
• Rated input power 3 W
• Maximum input power 5 W
• Buzz & Rattle must be normal (at sine wave 3.46 V)
• THD MAX 5% (RATED POWER INPUT at1000HZ）
• Operating temperature -20~+60℃
• Storage temperature -20~+60℃
• Environmental Protection Regulation RoHS