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How do I hook up HD/DVR cable box to get 5.1 audio

by GinoShea / August 6, 2007 1:41 AM PDT

First off I appologize if this is a commonly asked questioned. I searched the CNET database to see if this has been posted before and nothing came up. Maybe I put the wrong search terms.

I have a Sony KDS-55A2020 TV. A Marantz 5.1 receiver and and a Comcast HD cable box/DVR. Plus an Oppo DVD player.

My question is, some HD cable shows are broadcast in 5.1 surround sound. I want to get that 5.1 surround sound.

Is it better to hook the Audio out from the cable/DVR to the receiver or the TV audio out to the receiver? My Oppo DVD player's audio comes through an optical cable. My Marantz receiver is about 5 years old, it doesn't have HDMI inputs.

The cable/DVR is hooked up to the TV via HDMI. The Oppo DVD player is also hooked up via HDMI. The Sony has only two HDMI inputs.

Any advice would be welcomed. Thank you.

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hook up your
by tadam1080 / August 6, 2007 3:07 AM PDT

comcast dvr with digital optical/coax straight to your receiver. i have a similar setup . i have comcast's hd-dvr, an oppo, and a receiver with no hdmi inputs. i tried runing a digital optical from the tv's digital out and got no 5.1, from the oppo or the cable box. i then ran the optical directly from the cable box and one from the oppo to my receiver and bingo, 5.1. the 5.1 sounds great on discovery hd theater and tnt weekend movies, and other on-demand stuff. i also have the oppo connected with analog for dvd-audio and sacd, and man does it sound great.

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So, let me get this straight....
by GinoShea / August 6, 2007 3:26 AM PDT
In reply to: hook up your

I'm pretty sure my receiver has only one optical input. So, are you saying I should hook the optical (now being used for the Oppo) to link up the cable/dvr to the receiver and then use composites to hook up the audio on the Oppo to the receiver?


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by bevillan / August 6, 2007 3:23 AM PDT

I too have a Comcast HD-DVR cable box and a Sony SXRD TV like yours. What I do is that I run HDMI from the HD-DVR to the TV directly and then a digital optical audio cable from the HD-DVR to my receiver. Then just turn the TV volume all the way down so you are just hearing the sound through your receiver.

Works like a charm.

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Do you have digital co-ax?
by HTHMAN / August 6, 2007 10:14 AM PDT

If you have 2 optical inputs on your receiver, hook your DVD player to one and your cable box to the other. If you only have one, you may have a digital co-ax input and your DVD player probably has an output to match. If you have neither, search for an optical switch. They have manual switches that allow you to connect 3 optical cables to one input.

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My receiver has digital co-ax...
by GinoShea / August 6, 2007 12:55 PM PDT

and another optical input.

When I originally posted my inquiry I didn't realize I had a second optical input until I downloaded the receiver's instruction manual from Marantz. I lost the original in a move a few years ago.

I'm pretty sure I've got this figured out now. Thanks for the help everyone.

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