Question about Yamaha RX-V630 Receiver
If I connect devices to any of the audio-only input modes - ie, CD-R/MD or CD, or even 6-channel input - I get audio - however, if I connect using any of the video input modes - no sound comes out. I know the cable works as its the same one going to the CD input mode. And the strange thing is, if I turn up the amp to 0db (loudest it goes), you can hear the input very faintly in the background on any input, not just the one its physically wired to. I've checked the INPUT modes section of the setup menu, but am also trying to find out how to a master reset.
First of all, there is no audio information on the video lines. These are typically used together with the audio lines to complete the interface between the source(TV, DVD,VCR,etc) and your receiver...accordianman
Posted on Oct 31, 2007
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The following is some boilerplate I made up that should explain some usage limitations.
Be advised that the engagement of any device in a Tape Monitor loop on a late-model Audio/Video Receiver will effectively tie the receiver down to stereo-only analog sound reproduction. I'll explain.
The connections themselves are fairly simple but it pays to understand what happens in the loop.
In general, any Line-Level external processor (EQ, dynamic range expander, etc) will go into a Tape Monitor loop on a receiver. A Tape Monitor, when engaged, sends the stereo analog signal Out to the Processor, massages it and returns it to the receiver via the Tape Monitor IN connectors to be passed on to the receiver's internal processes (volume, tone, whatever).
Old school analog stereo-only receivers consistently work this way. Newer digital and audio/video receivers introduce a couple of problems: 1) digital sound processing to simulate a variety of soundfields; 2) multiple output channels, either discrete or digitally-generated.
The latter requires that whatever signal is being processed experiences a maximum of one analog-digital-analog conversion.
EVERYTHING analog coming into the modern digital receiver is automatically converted to a digital signal for internal processing unless you choose a STEREO-only or STEREO-Direct setting. Consequently, no further external analog-digital conversions would be allowed if, say, a Tape Monitor circuit was activated, and a possible feedback loop could otherwise be created in a digital-sourced selection (output to its own input), so the unit is wired to treat the Tape Monitor as the first analog step in the process and defeats any pure digital sources.
In a multichannel unit, what would happen to the other channels if you sent ONLY the Front Left & Right out for processing? They would NOT be processed. That logical problem also plays into the decision to defeat digital sources if the Tape Monitor is activated. I don't totally agree with the engineers but that's the way it is. Nature of the digital beast.
Okay, back to the hook-up:
Receiver Tape Out (Rec) - to the External Processor (EQ, whatever) Preamp-, Rec, Line-In; Receiver Tape In (Play) - from the External Processor (EQ, whatever) Preamp-, Play , Line-Out.
Receiver Tape Out (Rec) - to the External Processor (EQ, whatever) Preamp-, Rec, Line-In;
Receiver Tape In (Play) - from the External Processor (EQ, whatever) Preamp-, Play , Line-Out.
So, to sum up, you can only use the EQ or any outboard processor for analog stereo sources. If you actually want to use an analog recording deck you could place it within the typical Equalizer
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