1.1

                USE TYPE

57.4x 49 x 35mm

1.2

RATING POWER

2.5 W

1.3

VOICE COIL IMPEDANCE

4Ω±15%  at 1000Hz  1.0 V

1.4

        Resonance frequency

730Hz±20%  at 1.0 V（单体：650 Hz）

1.5

SOUND PRESSURE

90±3dB  0.5m /1W  at  800 1000 1200 1500 Hz  inaverage.

1.6

RESPONSE RANGE

Fo

–5K Hz deviation 10 dB Max.

1.7

DISTORTION

10% max  at 1K Hz1 W

1.8

MAX INPUT POWER

3W must be normal at a white noise for one second

1.9

VOICE COIL

Φ13.28

1.10

MAGNET SIZE

Size  Φ12.5*2.5

1.11

BUZZ RATTLE

Must be normal at sine wave3.16V

1.12

LOAD TEST

White noise2.5W 24 Hours，50,000 playback tests

1.13

HEAT TEST

55℃±2℃ 20-25% H.M. 24 Hours

-30℃-4h/70℃-4h

1.14

HUMIDITY  TEST

40℃±2℃ 90-95% H.M. 24 Hours

1.15

COLD TEST

-20℃  24 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

 Water proof grade

IP67

1.18

Wire tension

_{Wire drawing force 50N/3S}

1.19

Fall off

_{(3 directions / 1m height fall) no problem;}

1.20

 Flame retardant grade

_{V 0}