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Registered: ‎01-30-2008
Re: DVR low volume
The optical and HDMI outputs are digital, and the digital levels sent by the U-Verse receiver are correct.

The likely problem is that your AV receiver is paying attention to the Dolby Digital dialogue normalization parameter. This is a parameter sent by the U-Verse receiver with the Dolby Digital audio that tells the receiver what volume level reduction to apply to the audio, in order to make it the same relative level as other sources that use this parameter.

I have seen on U-Verse that sometimes this parameter is incorrect or missing, and this can lead to lower-than-normal volume audio for AV receivers that process this parameter.

Look in your receiver's configuration manual to see if you can disable dialogue normalization processing and/or dynamic range compression (a related Dolby Digital parameter).

To verify is this parameter is causing your problem, temporarily switch the U-Verse STB to Stereo audio vice Surround. This will cause the U-Verse box to send 2-channel PCM audio vice Dolby Digital, and PCM audio streams have no dialogue normalization parameter.
*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.