Help With Sony Dav-c450.

1. HDMI connection using the Audio Return Channel (ARC) feature (Preferred method)
2. Connection using Coaxial Digital Cable, Optical Digital Cable, or Audio Cable

Follow the instructions below for either of these two methods:

IMPORTANT: The methods provided below are the most common. For model-specific information about other possible connections and system settings, refer to the operating instructions supplied with your products. Manuals, Specifications and Warranty information for your Sony product is available online.

NOTE: Separate steps are available when connecting a disc player, cable set-top box, satellite receiver or other source device to the audio system.

Option 1: HDMI connection using the ARC feature:

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NOTES:

Both devices being connected must support the ARC feature. HDMI ports may be marked with ARC to show which one to use. If not, check your product manual or specifications to see if the ARC feature is supported. Manuals, Specifications and Warranty information for your Sony product is available online.

If you find that your TV, A/V receiver or home theater (HT) system does not support ARC, you will need to use Option 2: Coaxial Digital Cable, Optical Digital Cable, or Audio Cable to connect your devices.

Make sure that both devices support ARC functionality.

Make sure that the TV and receiver are connected using an HDMI® cable.

Connect the cable to the HDMI port that is labeled ARC or the port identified in your manual that supports ARC.

Turn on the Control for HDMI setting on both the TV and the receiver or home theater system.

NOTE: The steps required to enable the Control for HDMI feature may vary. Check the operating instructions supplied with the devices for model-specific steps.Manuals, Specifications and Warranty information for your Sony product is available online.

Option 2: Connection using Coaxial Digital Cable, Optical Digital Cable, or Audio Cable:

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NOTE: You can find these cables and more through the Parts & Accessories website. Parts or accessories for Sony® Products are available online through Parts & Accessories Sales.

Connect a Coaxial Digital Cable, Optical Digital Cable , or Audio cable to the Audio Output jack of the television.

Connect the other end of the cable to the corresponding jacks on the stereo receiver or home theater system.

NOTE: Depending on the stereo receiver or home theater system being used, the audio input may be labeled TV INPUT or VIDEO INPUT.

Turn on the television.

Set the television sound to the desired setting of either Fixed or Variable.

Turn on the stereo receiver or home theater system.

Set the stereo receiver or home theater system to the proper input.

For more assistance please click the link

https://ca.en.kb.sony.com/app/answers/detail/a_id/...,67/p/46871,74233,74918/

Thanks