Question about Velodyne CHT-12 Subwoofer

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Sub-woofer does not turn itself on in 'Auto' mode (signal driven)

I constantly have to switch it off then on again, and when I turn it on again the next day, it will often not turn itself on although it is still in 'auto' mode. Also, The sub-woofer will start humming at a very low frequency at any time sporatically after I have shut down my home theater system. I manually have to shut down the Sub to stop the humming. Thanks, Claude Hamel or Qu?bec, Canada 1-819-457-4985 Model CHT-12

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Re: sub-woofer does not turn itself on in 'Auto' mode...

For the "auto on" problem.

These will sound very basic, please go with it.

On your signal source, make sure you have the sub set to on.
If you can adjust the output setting on your source, turn this up.
Adjust the volume setting on the sub lower to mach the volume of the main speakers.
You may need to make these adjustments a few times to get them working.

On the hum and noise problem

Check your power outlet for the sub, make sure the polarity is correct. I have found this to not always be right. Also what is on that same circuit. Things like the fridge can cause a lot of noise on the power line. Next check your connecting cables, are they of good quality? Are they running next to anything that may cause interference? Also check you connections to the signal source. Cable and dishes are known for ground problems.

Posted on Jan 04, 2009

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Re: sub-woofer does not turn itself on in 'Auto' mode...

Expert Technician is required: -you have a problem at the signal detector section that needs to be Fixed. Good Luck Toufic Malek

Posted on Sep 28, 2007

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