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©2011 Knowles Electronics
3.2. Electro-Acoustic Parameters
Loudspeaker mounted in adapter acc. to 3.6 in setup acc. to 3.5.
1. Rated impedance Z: 6Ω
2. Voice coil DC resistance R: 5,4Ω±10%
3. Resonance frequency (measured @1ccm, 700mW) f
0
: 850Hz±7,5%
3.1 Typical resonance frequency (measured @open back, 0,5V) f
0
: 500Hz
4. Maximum usable excursion xmax p-p: 0.74mm p-p
5. Measured characteristic sensitivity 74±2dB
(measured at 1W in 1cm, calculated to 1m
average from 2kHz to 6kHz, thermal compression included)
5.1. Measured characteristic sensitivity (at 1V in 10cm) 87,2±2dB
average from 2kHz to 6kHz
6. THD according chapter 3.1.
7. Rub & buzz no audible R&B at max sine power
All acoustic measurements at 23±2°C
3.3. Power Handling
Speaker mounted in 1ccm test device (open front)
1. Max sine power f≥1kHz 1000mW
f<1kHz 700mW
(at 1ccm if no extra damping is provided)
2. Max short term power (70°, 1sec. ON / 60sec. OFF) 1200mW (RMS)
(pink noise, 2
nd
order high pass filtered, -3dB at 1.2kHz, crest factor 2)
3. Max continuous power (70°, 500h) 1000mW (RMS)
(white noise, 2
nd
order high pass filtered, -3dB at 100Hz, 2
nd
order low pass filtered, -3dB at 8kHz, crest factor 2)
