I wonder if the audio input jack got tweaked a little bit. What kind of connection is it into the powered speaker? (what model # M-audio so I can take a view online)
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They're M-Audio Studio Pro 4 desktop monitors, which I don't see on their site any more.
Oh, wait. They're "Studiophile DX4" speakers. And they hum when the audio input is unplugged, too.
And in fact, the right speaker is completely dead. It just hums.
where you using the 1/4" or the RCA inputs? I'm wondering if there is something causing a short between the shield and tip on one of the 1/4" inputs. Maybe a piece of schmadda got in there.
does the left work at all? ETA: removed IM info so the spam bots arent tempted
Is there any difference between a coaxial digital audio cable and a "regular" rca cable?
Assuming there is a difference:
Is there any difference in quality between using a coaxial digital audio connection and an optical one?
Is there any difference between a coaxial digital audio cable and a "regular" rca cable?
I'm pretty sure the answer is "no," but NoiseDesign or omnis audis would be able to give you a more confident and correct answer.
Well, technically yes. The cables designed for digital have a different resistance than regular RCA cables. You can end up with jitter and some other artifacts with bad digital connections. If you need to use a random RCA cable for digital audio, use one designed to carry video and you should be okay.
As for optical or coaxial, there are different arguments for both. One of the advantages for optical is that you eliminate the possibility of a ground loop causing interference in your signal. The downside with optical is that some cables can once again cause jitter and minor clocking issues due to reflections down the cable. I tend to think it's a pretty level field between the two, it mainly depends on what the problems are that are presented by a particular installation.
Thanks ND!