1.1

              USE TYPE

41.3*30.6*20.5Hmm

1.2

RATING POWER

2W

1.3

VOICE COIL IMPEDANCE

4Ω+15%  at 1000Hz  1.0 V

1.4

RESONANCE FREQUENCY

580Hz±20%  at 1.0 V  IN BOX    (250 Hz±20%  SPEAKER )

1.6

SOUND PRESSURE

83±3dB  0.5m /1W  at800,1000,1200,1500 Hz inAverage. IN BOX  80±3dB  0.5m /1W

1.7

RESPONSE RANGE

Fo–20K Hz deviation 10 dB Max.

1.8

DISTORTION

7% max  at 1K Hz1W

1.9

MAX INPUT POWER

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

1.10

VOICE COIL

15.5*3   N35

1.11

MAGNET SIZE

SizeΦ15.5x3

1.12

BUZZ RATTLE

Must be normal at sine wave2.83V

1.13

LOAD TEST

White noise3W 24 Hours

1.14

HEAT TEST

55℃±2℃ 20-25% H.M. 24 Hours

1.15

HUMIDITY  TEST

40℃±2℃ 90-95% H.M. 24 Hours

1.16

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