1-1 SCOPE
This specification is a typical speake unit fo telephone hand set
1-2 DIMENSIONS
As shown in fig (1)
1-3 NET WEIGHT
APPROX. 1.2 gams
1-4 OPERATING
TEMPERATURE
-30℃to +70℃
1-5STORAGE
TEMPERATURE
-40℃to +85℃
2.ELECTR0ACOUSTIC CHARACTERISTICS
2-1 TEST SET UP
Measuing conditions and pocedues shown in fig(2)
2-2 IMPEDANCE
8Ω±15% ohm ( at 1 KHz, 0.9Vms )
2-3 SOUND PRESSURE
LEVEL
92dB±3dB SPL /1W/10mm at 800、1000、1200、1500Hz .AVE
2-4FREQUENCY
RESPONSE
800±20%HZ
2-5INPUT POWER
(NOM./MAX.)
1W/1.2W
2-6 AUDIBLE NOISE
Must be fee audible noise (buzzes and attles)
(200~10KHz fequency ange ,input level up to 2.83Vms)
2-7 DISTORTION
Less than 10% at 1KHz 1W
