[quote=b_d0za;14303290]Here is the splitter I am using:http://radioshack.com/product/in...entPage=search
Does anyone know any reason why one should not do this?
Yes, but I can also explain why it will often work.
SP/DIF is an impedance-matched system, like a TV antenna. Unlike TV receivers, SP/DIF receivers expect an input signal that has at least a certain voltage level.
Your passive splitter is wrong on two grounds. It violates impedance matching, and it could violate the input voltage requirement.
As has been suggested, the splitter of choice for SP/DIF is a video splitter. Not an antenna splitter with F connectors, but instead an externally-powered video splitter with RCA connectors.
That all said, SP/DIF over short distances and with a small number of components has become fairly non-critical.
You say that your passive spitter works, and I don't doubt it.
If it is not broke, don't fix it!
If some day you move your components around and change the cabling and it stops working, then run right out and buy that video splitter or video distribution amplifier.