7
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| AC power | is not getting to the | • Check that the power cord is plugged in securely at both ends and | |
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| make sure that the power outlet the subwoofer is plugged into is | |||
No | output | from | amplifier. |
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| working. | ||||||
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the |
| subwoofer |
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(the LED does not |
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| • Check the fuse. The fuse is located on the amplifier, near the power | ||||
light up). |
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| plug. Unplug the power cord and remove the fuse holder with a flat | ||||
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| The amplifier’s fuse is blown. | |||
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| head screwdriver. If the fuse is blown, the output transistors are | |||
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| probably damaged. Contact the dealer or | |
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| for authorization to send the amplifier back for service. | |
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| The subwoofer is not receiving a | • Recheck the connections between the source and the subwoofer. | ||
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No output from the |
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| • With the volume on the subwoofer turned to a low setting, try | ||||
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| plugging the subwoofer directly into a CD player or lightly touching | |||||
subwoofer | (LED |
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| the unplugged end of the input cable. If you hear noise from the sub- | |||||
lights up red). | Subwoofer amplifier is faulty. | ||||||
woofer, the problem is with your connection to the system. If you | |||||||
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| hear no noise, try turning the volume on the subwoofer up some more. | |
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| If you still hear no noise, contact your dealer or | |
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| support for authorization to send the amplifier back for service. | |
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| Connection | between subwoofer | • Return the subwoofer to the dealer or contact HSU Research. | |
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| amplifier and woofer is faulty. | |||
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No output from the |
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subwoofer | (LED |
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turns green). |
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| Driver or amplifier is faulty. | • Return the subwoofer to the dealer or contact HSU Research. | ||
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| You used speaker level connections |
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| and have mixed up the polarity of | • Correct the polarity of the speaker wires by matching the +/- from | ||
Little or no sound | the wires, thus shorting one channel | the receiver/amplifier to the +/- of the subwoofer’s speaker level input. | |||||
from | one | main | of the main amplifier. |
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speaker.. |
| You used speaker level connections | • Connect only to the channel that has a true ground ‘ - ’. If neither | ||||
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| and one or both your main amplifier’s | channel has a true ground ‘ - ’, contact your dealer or | ||
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| ‘ - ’ are not true ground. | technical support. | ||
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| • Increase the volume of the subwoofer and the subwoofer level or | |
Bass | output | from | Level on subwoofer or receiver’s | LFE level on the receiver or other source. It is best to set the level | |||
subwoofer is low. | of the subwoofer relative to the other speakers using a test disk and | ||||||
subwoofer output is too low. | |||||||
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| a Radio Shack SPL meter, or | |||
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| cessor. See “Volume Level” in Step 4. | |
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S u b w o o f e r |
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thumps when the | Noise is being generated by up- | • When you shut down your equipment, turn off the subwoofer first. | |||||
system | is | being | stream equipment. | When powering up, turn on the subwoofer last. | |||
turned on and off. |
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Repair
If your unit needs service, please
Contact your dealer or call tech support at
We will try and respond to emails sent to techsupport@hsuresearch.com within two business days.
