2403-263-00077 Datasheet, PDF (10/20 Pages) Knowles Electronics – SPEAKER-16-4.7-MFD

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
f₀:
540Hz typical
4. Maximum usable excursion
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
according chapter 2.1.
7. Rub & buzz
< 80dBSPL (300Hz -1500Hz) in 1cm at 500mW (2V_eff)
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, 2^nd order high pass filtered, -3dB at 800Hz, crest factor 2)
2. MAX. CONTINUOUS POWER (500h)
500mW (RMS)
(pink noise, 2^nd order high pass filtered, -3dB at 700Hz, crest factor 2)
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