喇叭 平板电脑喇叭 1420喇叭 2014喇叭

1. Scope

This document contains required environmental, electrical, acoustic, mechanical, package

and reliability test requirements.

2. Environmental Requirement

The transducer 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 Short Term Maximum Power (in 1cc box) 0.8 Watts

4. Acoustical Requirments

4.1 Sound Pressure Level 87 +/-3dB @1v/10cm at flat range

4.2 Bass Resonance Frequency in free air 500±100Hz, 1v input

4.3 Rated Frequency Range 200 - 10kHz

Frequency Response 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.