Question about Koss KS3102 System

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KS3102 Digital Optical Input Problem

I've had the unit for several years and no problems however I recently
purchase an LG 42" LCD TV and wanted to hook up the audio output
of the TV to the Koss unit to take advantage of surround sound. I purchased a Dynex cable but can't get it to work. According to the
manual I should see a Digital indicator on the Koss display but it is
not there. I'm pretty sure it is a problem with the Koss as I hooked up a DVD recorder and the same problem occurs. Any tips on how to get this to work? Thanks in advance.

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  • Anonymous Feb 04, 2008

    I have the same problem. Did you figure it out?

  • kc13124 Feb 06, 2008

    Nothing yet. I had a friend of mine look at it who is fairly savvy with electronic hookups and he wasn't able to resolve. We resorted to just
    the standard audio cable hookup and it works OK.

  • Nicknstees Jan 18, 2009

    Same thing here.... I also have a sharp LCD and it doesnt seem to be working. Koss is on all the right settings. (optical input for AV1 also tried AV2). I have a feeling the older Koss system might not be able to decode the optical signal. As I plug in the optical cable I hear some very low static hisses. Like its recieving the signal ... but maybe the Koss 3102 cant decode it properly...

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What I did was turn on the system, don't put in any dvd in, or select an output 1 or 2. Press Menu on the remote, the display on the system display, not on tv should show Speaker, and other options. Select Input, select the one you want to use as the Optical Sound by press enter, then it will ask you on the system display input or optical sound input. Select optical input and press enter it will then say saved. You can then hit exit til goes back to where the display is back on main screen, or just wait til it exit by itself.

Posted on Jan 11, 2009

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Found out what happening... but there is no real solution or fix.

Most LCD Tv's (90%) do not support audio swaping via HDMI. So the TV will not pass the digital audio along to the optical reciever. Go figure... Try pluging something with audio into your standard RCA (white & red) jacks and I bet your optical audio will be working now. But it wont sound any better than using just those jacks since the source is now from the RCA jack. It seems almost pointless for these TV's to have these optical audio outs..

The Solution. Get a Home Theater that has HDMI inputs and then connect HDMI equipment to the reciever which will handle the swap and send video via HDMI to the LCD TV. BE WARNED!!! some recievers do not support video swaping! So check before you buy! Or you will be right back where you started. You get what you pay for.

Back to RCA












Posted on Jan 18, 2009

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