1.1

         USE TYPE

53.3x44 x 27 mm

1.2

RATING POWER

16W

1.3

VOICE COIL IMPEDANCE

4Ω±15%  at 1000Hz  1.0 V

1.4

RESONANCE FREQUENCY

370Hz±20%  at 1.0 V

1.5

SOUND PRESSURE

77±3dB  0.5m /1W  at600，800,1000,1200Hz in average

1.6

RESPONSE RANGE

Fo–14K Hz deviation 10 dB Max.

1.7

DISTORTION

7% max  at 1K Hz1W/1M

1.8

MAX INPUT POWER

20W must be normal at a white noise for one min

1.9

VOICE COIL

Φ16.28

1.10

MAGNET SIZE

Size  Φ15.5*3.0

1.11

BUZZ RATTLE

Must be normal at sine wave8.0V（370-5000Hz）

1.12

LOAT TEST

White noise16W 96 Hours

1.13

HEAT TEST

55℃±2℃ 20-25% H.M. 24 Hours

1.14

HUMIDITY  TEST

40℃±2℃ 90-95% H.M. 24 Hours

1.15

COLD TEST

-20℃  2 Hours

1.16

POLARITY

When a positive D.C current is applied to the voice coil terminal marked(_＋).the diaphragm shall move forward

1.17

After each test, place it in the indoor environment for 2 hours and test it. The test results shall meet the requirements of item1.5，S. P. L shall not deviate more than 3 DB from the initial value