2403 260 00057
2.9. Electro-Acoustic Parameters
Loudspeaker mounted in adapter acc. to 2.13.
1. Rated impedance
2. Voice coil resistance
3. Resonance frequency
(measured @1ccm, 700mW)
4. Maximum usable excursion x
max
Z:
R:
f
0
:
p-p:
8Ω
7.2Ω±10%
650Hz±7,5%
1 mm p-p
73±2dB
91,5±2dB
5. Nominal characteristic sensitivity (calculated for 1W in 1m)
average from 2kHz to 4kHz
5.1. Measured characteristic sensitivity (at 700mW in 10cm)
average from 2kHz to 4kHz
6. THD
according chapter 2.8.
7. Rub & buzz (measured @ 10cm, 1ccm, 700mW (2.29V
eff
) < 65dBSPL (300Hz -1500Hz)
All acoustic measurements at 23±2°C
2.10. Power handling
Loudspeaker mounted in lifetime test device (1ccm back cavity, open front)
1. Max short term power
nd
(IEC268-1, 2 order high pass filtered, -3dB at 900Hz, crest factor 2)
(IEC268-1, 2 order high pass filtered, -3dB at 650Hz, crest factor 2)
nd
(1sec. ON / 60sec. OFF)
(500h)
1000mW (RMS)
700mW (RMS)
2. Max continuous power
Release – Revision: D
Page 12 of 21
©2011 Knowles Electronics
KNOWLES [ KNOWLES ELECTRONICS ]
