[mythtv-users] OT: Analogue to S/PDIF converter

Brian Phillips brian.phillips at gmx.net
Tue Jun 24 07:07:26 UTC 2008

Justin The Cynical wrote:
> Jerry Rubinow wrote:
>> http://www.gefen.com/kvm/product.jsp?prod_id=4907
>> For $80, you get a very small box that takes a TOSLink or RCA digital
>> input and outputs analog L & R.  Note that the input must be
>> 2-channel digital audio.  It won't work with 5.1.
> I was looking at one of those as a way to get SWMBO's new Wii working
> with the component-video-n-digital-audio-magic-switch[1]. 
> How well do those things work?
> [1] Nintendo hurts my head at times.  Why, oh why, would one offer
>      component out for the video but not S/PDIF out for the audio?
>      And what's with the hard limit of 2 gig on SD cards, and USB
>      ports that can't use a USB hard drive as a replacement for said
>      SD cards and internal 512 Meg flash?

Because component out is analog?  Why would you offer an analog video output
and a digital audio output?

I've looked at these types of devices (ADC and DAC) for some time now.
Basically what I have found is that the DAC is FAR, FAR more common than the
ADC.  Even though the two circuits are of similar complexity and size, for
some reason you can get a DAC for pennies but no one makes a SMALL, cheap
ADC.  When I say cheap I mean less than $40-$50.

If you find one, let me know.  I'm this close to laying one out and building
it myself.  

The above quoted device is a digital to analog converter.  It won't convert
analog to S/PDIF.  I don't think it will do what you're looking for.


PS I consider $80 for the above device fairly reasonable, even though the
actual circuitry can be had for about $30 on ebay, the above device has a
shiny case and an included power supply.

More information about the mythtv-users mailing list