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JBL 1500 - Basic Troubleshooting; Low or No Bass Output Issues

JBL 1500
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BASIC TROUBLESHOOTING
If there is low (or no) bass output
Make sure the connections to the left and right “Speaker
Inputs” have the correct polarity (+ and –).
Make sure the subwoofer is plugged into an active electrical
outlet.
Make sure the Power Switch is on.
In Dolby Digital or DTS modes, make sure your
receiver/processor is configured so that the subwoofer
and LFE output are enabled.
Adjust the Subwoofer Level Control
7
1500 Array Subwoofer

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