hooking up 2.1 speakers to new tv

[new kid in town]

I have klipsch 2.1 multimedia speakers. Hoping not to buy another set of speakers, I bought a highly rated optical out adapter on amazon and am trying to hook it up to a new tv with no audio out capacity. It works. I plug the speaker 3.5 jack in the adapter. (no rca cable).
The problem is that the sound keeps playing even when I turn the speaker volume all the way down and the tv volume all the way down. I messed with all the tv settings with no luck. Any input is appreciated.

 

[kanewolf]

Optical output is usually not changed by the volume control on the TV. If the speakers can't be turned down enough, then you may need a different method for converting from digital (optical) to analog 3.5mm jack. You may have to find something with a volume control that can completely mute.

 

[americanaudiophile]

Something like this will work:
http/www.amazon.com/PAC-LC-1-Remote-Amplifier-Controller/dp/B0002J226O

 

[kanewolf]

Something like this will work:
http/www.amazon.com/PAC-LC-1-Remote-Amplifier-Controller/dp/B0002J226O

He would also need an RCA to 3.5mm adapter.