XTZ EDGE SA-1 Bedienungsanleitung Seite 29

10. If the unit exhibits a drastic change in output sound, after you check the items above you may wish
to perform the steps below to assist in troubleshooting by verifying the proper operation of both amplifier
module and driver;
Turn on your audio equipment, except for the subwoofer's main power switch, which should remain
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"OFF"
Prepare to play a 20 to 30Hz sine wave (test tone) from your CD/DVD test disc, smart-phone, comput-
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er, or other signal source (note: if you do not have this type of test signal, contact customer service or
your place of purchase for assistance)
Adjust the volume of your equipment & the subwoofer to a medium-high volume level
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Start playing the test signal
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Prepare to carefully listen to the subwoofer's low frequency output (make sure the room is quiet)
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Turn the subwoofer main power switch "ON"
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After a couple of seconds, you should hear amplifier & driver start playing in a loud, somewhat uncon-
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trolled fashion, with extra harmonics (warmer fuller sound that normal)
Turn down the volume or stop the test signal after a few seconds
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The above process helps determine if both amps & drivers are functional. If there is no change from the
2nd amplifier and driver powering up, repeat the test. If you are still unable to hear the 2nd driver and
amp power up, further troubleshooting by a qualified technician may be required.
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