Question about Onkyo HT-S780 System

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Connected home theatre system but no sound sub woofer

System is onkyo. Light on sub woofer is on but no response whatsoever.

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If the system uses a remote control, you may need to adjust the subwoofer out signal setting or turn on the sub in a menu, and on many systems, you can only access those settings via a remote control (you should check the onkyo user manual on how to do it).

Now, this is just one suggestion, it may work, but then again, it may not.

These could also be connection problems or some internal trouble in the onkyo sub signal output section or in the subwoofer input section, but hopefuly, it's just a "turn on" or "signal level" setting in a menu.

Good luck

3rq8 (triarcuate)

Posted on Jul 23, 2009

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Posted on Jan 02, 2017

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I just replaced the cord running from the sub to the dvd player. now my sub will not turn on


hi,
steps to trouble shoot for sub-woofer detection :
1. please check whether the cord is securely connected at both the ends.
2. check if there is transmission through the cord (there'll be a small static through the cord if there is transmission.)
3. reset the dvd-player to default audio-output and then choose the 5.1 sound system which is the correct setting for the th-c6.
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the system will work perfectly if the cord is in good condition, otherwise please replace the cord again, and this time check it at the store.
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Installation Help


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