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240326300077

240326300077

  • 厂商:

    KNOWLES(楼氏)

  • 封装:

    -

  • 描述:

    SPEAKER8OHM500MWTOPPORT74DB

  • 数据手册
  • 价格&库存
240326300077 数据手册
2403 263 00077 SPEAKER-16-4.7-MFD 2403 263 00077 Change History Status Version Date ECR Comment / Changes Initials of owner Draft A1 18.02.08 Draft specification for first samples MW Draft A2 02.03.09 Draft specification for first samples HW Draft A3 15.05.09 Draft specification for samples HW Release A 15.10.09 First released Version HW/AH Release B 07.12.09 Dimension update HW/AH Release Release C 27.01.10 Spring Force added HW D 15.02.10 Main tolerance and Handling Force update HW  2818 . page 2 of 22 2403 263 00077 Contents 1. Mechanical Characteristics ..................................................................................................... 4 1.1. Main Dimensions ............................................................................................................. 4 1.2. Contact Layout ................................................................................................................ 5 1.3. Contact Force .................................................................................................................. 5 1.4. Print Code ........................................................................................................................ 6 1.5. Forces on Component ..................................................................................................... 7 1.6. Material List ..................................................................................................................... 8 2. Electro-Acoustic Characteristics ............................................................................................. 9 2.1. Frequency response ........................................................................................................ 9 2.2. Electro-Acoustic Parameters ......................................................................................... 10 2.3. Power Handling ............................................................................................................. 10 2.4. Measurement Setup (acoustics) .................................................................................... 11 2.5. Measured Parameters ................................................................................................... 11 2.6. Vibra Parameters ........................................................................................................... 12 2.7. Measurement setup (Vibra Function) ............................................................................ 13 2.8. Measured Parameters (Vibra Function) ......................................................................... 13 2.9. Measurement adapter.................................................................................................... 14 3. Environmental Conditions ..................................................................................................... 15 3.1. Storage .......................................................................................................................... 15 3.2. Transportation ............................................................................................................... 15 3.3. Functionality .................................................................................................................. 15 4. Environmental Tests ............................................................................................................. 16 Qualification Tests .................................................................................................................... 16 Requalification Tests ................................................................................................................ 16 Sample Size, Sequence ........................................................................................................... 16 Period of Shelf-Life ................................................................................................................... 16 Testing Procedures .................................................................................................................. 16 5. Related Documents .............................................................................................................. 20  page 3 of 22 2403 263 00077 1. Mechanical Characteristics 1.1. Main Dimensions This product is non-automotive qualified  page 4 of 22 2403 263 00077 1.2. Contact Layout 1.3. Contact Force  page 5 of 22 2403 263 00077 1.4. Print Code  page 6 of 22 2403 263 00077 1.5. Forces on Component  STATE MAX PERMANENT FORCE [N] FROM FRONT TO BACK MEMBRANE 10 0 MAX HANDLING FORCE [N] 20 0 . page 7 of 22 2403 263 00077 1.6. Material List  1. Material of housing: PC 2. Material of membrane: Plastic Foil 3. Material of pot: Soft Magnetic Iron 4. Material of topplate Soft Magnetic Iron 5. Material of magnet: Nd Fe B 6. Material of contact Stainless Steel 7. Material of cover: PC 8. Material of bottom: Stainless Steel 9. Material of vibra spring: CrNi-Steel 10. Dimensions [mm]: ø16.4 x 4.7 11. Mass: 3.0 g page 8 of 22 2403 263 00077 2. Electro-Acoustic Characteristics 2.1. Frequency response Typical frequency response measured on baffle according to 2.4. in measurement adapter according to 2.9 (distance d = 1cm,P= 125mW with 2cm back cavity) f [Hz] 300 400 700 750 900 1500 3000 4000 6000 10000 15000  lower limit [dB SPL] Tolerance window upper limit [dB SPL] 95 85 114 107 107 104 102 103 105 102 f [Hz] 300 900 1500 10000 upper limit [%THD] 15 15 4 4 114 110 108 111 114 112 page 9 of 22 2403 263 00077 2.2. Electro-Acoustic Parameters Loudspeaker mounted in adapter acc. to 2.9 measured on baffle according to 2.4. 1. Rated impedance Z: 8Ω 2. Voice coil resistance R: 7.2Ω±10% 3. Resonance frequency in 2ccm (measured @15mW) f0: 740Hz±10% 3.1. Resonance frequency with open back 540Hz typical 4. Maximum usable excursion f0: xmax p-p: 0.6mm p-p 5. Nominal characteristic sensitivity (calculated for 1W in 1m) average from 2kHz to 5kHz 74±2dB 5.1. Measured characteristic sensitivity (at 125mW in 1cm) average from 2kHz to 5kHz 105±2dB 6. THD 7. Rub & buzz according chapter 2.1. < 80dBSPL (300Hz -1500Hz) in 1cm at 500mW (2Veff) All acoustic measurements at 23±2°C 2.3. Power Handling Loudspeaker mounted in lifetime test device (1ccm back cavity, open front) 1. MAX.SHORT TERM POWER (1sec. ON / 60sec. OFF) 1000mW (RMS) (pink noise, 2nd order high pass filtered, -3dB at 800Hz, crest factor 2) 2. MAX. CONTINUOUS POWER (500h) 500mW (RMS) (pink noise, 2nd order high pass filtered, -3dB at 700Hz, crest factor 2)  . page 10 of 22 2403 263 00077 2.4. Measurement Setup (acoustics) IEC BAFFLE Rq,including wiring < 0,3 Ω freefield microphone 1/4“ power amplifier ≈ Analyzer • Frequency response • THD • rub & buzz 1 cm³ d measurement adapter 2.5. Measured Parameters 2.5.1. Sensitivity SPL is expressed in dB rel 20µPa, computed according to IEC 268-5 Measurement set up according chapter 2.4 and 2.9. This test is performed for 100% of products in the production line 2.5.2. Frequency response Frequency response is measured according test set up in chapter 2.4 and 2.9 data sheet and checked against the tolerance window defined in chapter 2.1. This Test is performed for 100% of products in the production line. 2.5.3. Total harmonic distortion (THD) Is measured according IEC 268-5 (2nd to 5th harmonics) and test set up in chapter 2.4 and 2.9 and checked against the tolerance window defined in chapter 2.1. This test is performed for 100% of products in the production line. 2.5.4. Rub& Buzz Rub & Buzz will be measured in the Inline-measuring device with a sinusoidal sweep. Rub & Buzz is defined as the maximum level of no harmonic energy, expressed as signal to nonharmonic content ratio, in a certain frequency-range. Signal and evaluation criteria are according to chapter 2.2. This test is performed for 100% of products in the production line.  page 11 of 22 2403 263 00077 2.6. Vibra Parameters Loudspeaker mounted in adapter acc. to 2.7 1. Resonance frequency (measured @0.35V/15mW) f0: 157Hz±7Hz 2. Max. Acceleration (measured @0.35V/15mW between 152-162Hz) a max: >6,5m/s2 acceleration vs frequency 8 7 6 a [m/s²] 5 4 3 2 1 0 142 147 152 157 162 167 172 f [Hz]  page 12 of 22 2403 263 00077 2.7. Measurement setup (Vibra Function) fr
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