1. scope this document contai required environmental, electrical, acoustic, mechanical, package and reliability test requirements. 2. environmental requirement the traducer including all components and solder joints must be free from lead (pb) and other banned or restricted substances according to customer's requirements. 3. electrical requirments 3.1 rated impedance 8±15% ohms @2khz, 1vrms input 3.2 rated noise power (in 1cc box) 0.5 watts 3.3 short term maximum power (in 1cc box) 0.7 watts 4. acoustical requirments 4.1 sound pressure level 85 +/-3db @1v/10cm at flat range 4.2 bass resonance frequency in free air 600±20%hz, 1v input 4.3 rated frequency range 200 - 10khz frequency respoe see figure 1 4.4 thd <10% @ 1khz, 1v input 4.5 rub & buzz the input power shall be set at rated noise power with specified back cavity. using an audio oscillator sweep from 200 to 3000hz . there shall be no buzzes,rattles, nor spurious noises. 5. polarity requirments 5.1 polarity when a dc source′s /+/ polarity is attached to the /signal/— marked in /+/and the /-/ polarity is attached the /gnd/,the membrane will move forward. 5.2 magnetic polarity top of the magnet is the north pole. "供应aac1115喇叭"的输出阻抗为7.5±15%，频率响应是620±15%，种类为送、受话器，加工定制是是，材质为lcp，型号是1115，规格尺寸为11*15（mm），品牌是goyo，驱动方式为电动式(动圈式)，灵敏度是85±3db