[sdiy] stereo output questions.....

[Graham Atkins]

A 3-circuit 1/4" jack can be used to carry stereo audio but many  
companies
are usig them to carry balanced audio presumably because XLR connectors
would add to the cost. They have traditionally been refered to as a  
stereo jack.
The use for balanced audio is relatively recent and the name "TRS" is  
used
for this purpose. With headphones you have either a mono or stereo  
jack, not
TRS. Just look at a few manufacturers such as this :-

http://www.behringer.com/PX1000/?lang=ENG

Graham
On 27 Nov 2008, at 19:30, Adam Schabtach wrote:

> Um, no, Jure is right. TRS refers to the physical connector; it has  
> nothing
> to do with the signal you carry on the connector. Consider a pair of  
> stereo
> headphones: it uses a TRS plug and carries an unbalanced pair of  
> signals.
> TRS jacks are also used on some mixing desks for patching insert  
> effects.
> One conductor carries the "send" signal, the other carries the  
> "return"
> signal, and the sleeve is used for ground.
>
> Or, for a second opinion: http://en.wikipedia.org/wiki/Tip_ring_sleeve
> (Not that Wikipedia is the definitive reference, but it does have a  
> lengthy
>>>>