SPECIFICATION FOR APPROVAL Customer： Description： Micro Speaker Soberton Part No. ：SP-1504 Date：2009-03-12 Customer Model No. ： Date of Approval Authorization Signature 211 N. First Street Minneapolis, MN. 55401 Http://www.soberton.com E-mail: [email protected] 612-849-6205 Approved Checked Design Ryan Wang Cheng Song Qi 2009/03/12 2009/03/12 2009/03/12 (CUSTOMER （ MODEL NUMBER） (PRODUCT TYPE） NUMBER) （REVERSION） SPEAKER SP-1504 01A （ PAGE （ DATE） NUMBER） 09-03-10 1/6 1． SCOPE This specification covers our product of dynamic speaker unit for mobile telephone use. 2． MECHANICAL LAYOUT&DIMENSIONS: Shown in page3/5 3． GENERAL REQUIREMENTS： 3.1 OPERATING TEMPERATURE RANGE：-20℃~+55℃ 3.2 STANDARD TEST CONDITIONS： Temperature: Relative Humidity: 17℃~25℃ 45%~80%(RH) 3.3 JUDGEMENT CONDITIONS: Temperature: Relative Humidity: 20±2℃ 60%~70%(RH) 4． SPEAKER MODE: 4.1 SOUND PRESSURE LEVEL: 97±3dB spl @0.6,0.8,1.0,1.2KHz in average Measuring condition :0.1W(Sine wave)0.032m measured with baffler shown in Fig.1. 4.2 IMPEDANCE: 8±15% Ω /1KHz/1V 4.3 MEASURING DIAGRAM: Shown in Fig.1. 4.4 TYPICAL FREQUENCY RESPONSE CURVE: Shown in Fig.2. 4.5 RATED POWER:0.5W. MAX POWER:0.8W 4.6 RESONANCE FREQUENCY(F0):1000±20% Hz/ 1V 4.7 DISTORTION: less than 10% at 1KHz,0.5W 4.8 BUZZ RATTLE: Must be normal at sine wave 2.53V 4.9 WEIGHT: 1.0g N0 REVISION UPDATE DEPICT DATE FACTURE CHECK APPROVED （ MODEL NUMBER） (CUSTOMERNU MBER) SP-1504 （ PRODUCT （ REVERSI TYPE） ON） SPEAKER 01A （ DATE） （ PAGE NUMBER） 09-03-10 2/6 5． RELIABILITY TESTS： The sound pressure as specified shall neither deviate more than ±3dB form the initial value, nor any significant damage after any of following testing. 5.1 HIGH TEMPERATURE TEST: High temperature: +70±2℃ Duration: 96 hours 5.2 LOW TEMPERATURE TEST: Low temperature: -40±2℃ Duration: 96 hour 5.3 HEAT SHOCK TEST： High temperature: +70±2℃ Low temperature: -40±2℃ Changeover time: <30 seconds Duration: 1 hours Cycle: 100 5.4 HUMIDITY TEST: Temperature: + 40±2℃ Relative Humidity: 90%~95% Duration: 96 hour 5.5 TEMPERATURE CYCLE TEST: Temperature: Duration: Temperature gradient: Cycle: 5.6 DROP TEST: Mounted with dummy set mass: Height: Cycle: -40℃ 45 minutes 1~3℃/min 25 +70℃ 45 minutes 100 g 1.5 m 6(1 each plain) Onto the concrete board 5.7 LOAD TEST: Speaker mode: white noise(EIA filter)for 96 [email protected] input power. N0 REVISION UPDATE DEPICT DATE FACTURE CHECK APPROVED （ MODEL NUMBER） （ CUSTOMER （ PRODUCT （ REVERSI NUMBER） TYPE） ON） SPEAKER 01A SP-1504 （ DATE） 09-03-10 (PAGE NUMBER) 3/6 6.MEASURING METHOD(SPEAKER MODE) 6-1 .Test Condition STANDARD Temperature : 15 ~ 35℃ Relative humidity: 45% ~ 85%, Atmospheric pressure: 860mbar to 1060mbar. JUDGEMENT Temperature : 20±3℃ Relative humidity : 60% ~ 70%, Atmospheric pressure : 860mbar to 1060mbar 6-2 . Standard Test Fixture 1.Input Power : 0.1W(0.89V) 2.Zero Level : -dB 3.Mode : TSR 4.potentiometer Range : 50dB 5.Sweep Time : 0.5sec N0 REVISION UPDATE DEPICT DATE FACTURE CHECK APPROVED （ MODEL NUMBER） SP-1504 （ CUSTOMER （ PRODUCT （ REVERSI NUMBER） TYPE） ON） SPEAKER 01A （ DATE） 09-03-10 (PAGE NUMBER) 4/6 7.FREQUENCY RESPONSE CURVE N0 REVISION UPDATE DEPICT DATE FACTURE CHECK APPROVED （ MODEL (CUSTOMER （ PRODUCT NUMBER） NUMBER) TYPE） SP-1504 SPEAKER （ REVERSION） （ DATE） 01A 09-03-10 (PAGE NUMBER) 6/6 9.PACKING N0 REVISION UPDATE DEPICT DATE FACTURE CHECK APPROVED