1-1 SCOPE |
This specification is a typical speaker unit for telephone hand set |
1-2 DIMENSIONS |
As shown in fig (1) |
1-3 NET WEIGHT |
APPROX. 1.2 grams |
1-4 OPERATING TEMPERATURE |
-30 to +70 |
1-5 STORAGE TEMPERATURE |
-40 | to +85
2.ELECTR0ACOUSTIC CHARACTERISTICS |
|
2-1 TEST SET UP |
Measuring conditions and procedures shown in fig(2) |
2-2 IMPEDANCE |
8Ω±15 ohm ( at 1 KHz, 0.9Vrms ) |
2-3 SOUND PRESSURE LEVEL |
91dB±3dB SPL /1.0W/10mm at 800、1000、1200、1500Hz .AVE |
2-4 FREQUENCY RESPONSE |
800±20HZ |
2-5 INPUT POWER (NOM./MAX.) |
1.0W/1.2W |
2-6 AUDIBLE NOISE |
Must be free audible noise (buzzes and rattles) (200 | 10KHz frequency range ,input level up to 2.83Vrms)
2-7 DISTORTION |
Less than 10 at 1KHz 1.0W |