模拟汽车发动机喇叭型号：HP057-4U-0057C-A规格：φ57mmH24.5mm4Ω3WPU边防水亚黑帽喇叭

• Size： D57mm H 24.5 mm
• Impedance： 4 ±20% Ω
• SPL(1W 1m sine wave) 87 ±3dB(at 800,1000.,1200,1500Hz )
• Resonance frequency 13 ±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