2403-260-00089 Datasheet, PDF (10/18 Pages) Knowles Electronics – SPEAKER-1115-SC-NAUTILUS 180

2403 260 00089
4.3. Measurement setup
R_{q, including wiring} < 0,3Ω
power amplifier
1cm³
≈
IEC BAFFLE
d=1cm
freefield
microphone 1/4“
analyzer
•frequency response
•THD
•rub & buzz
measurement adapter
4.4. Measured Parameters
4.4.1. Sensitivity
SPL is expressed in dB rel 20µPa, computed according to IEC 268-5.
Measurement set up and parameters according chapter 5.3
This test is performed for 100% of products in the production line.
4.4.2. Frequency response
Frequency response is measured according test set up in chapter 5.3 , data sheet and checked against
the tolerance window defined in chapter 5.1. This Test is performed for 100% of products in the
production line.
4.4.3. Total harmonic distortion (THD)
Is measured according IEC 268-5 (2nd to 5th harmonics) and test set up in chapter 5.3. This test is
performed for 100% of products in the production line.
4.4.4. 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 non-harmonic content
ratio, in a certain frequency-range. Signal and evaluation criteria are according to chapter 5. This test is
performed for 100% of products in the production line.
Revision: C
Page 10 of 18
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