I want to add a sub but have no AV reciever

Some Sony TVs have audio out on TV controlled by TV volume control, most TVs do not.

Thanks Kal and Stanwal. I have a Vizio SV472XVT. I checked and yes to all your points.

Thanks again,
Chris

There are seld powered center channels with remote powered subs. Which might fir your need. It is mid fi at best. These are called SOUNDBARS

Thanks Kal and Stanwal. I have a Vizio SV472XVT. I checked and yes to all your points.

Hi Chris555.

I am a new Vizio dealer and I think you are not reading the manual correctly.

To send "line level" output through your sets RCA analog outputs, you will need to "turn OFF" the internal speakers.

This then will only send the signal to the SUB you will be using, and you will have no main speakers playing.

I'm afraid to do what you wish would require also going with a prepro of some type that would then route that signal to BOTH main speakers and SUB.

As mentioned by some, there are powered SOUNDBARS with Subs that can do this for you also. In fact Vizio make a couple.

Adding a sub to the poor speakers in the TV itself is not a very good arrangement, IMO. Poor speaker sound with bass amplified??

You might want to try this for relatively inexpensive but excellent sound: I have a Sony 52" LCD/LED TV and added a pair of Audioengine 5 powered speakers. These have a line out to attach a separate subwoofer if you want, though I feel I really don't need one since the Audioengine 5's have excellent and deep bass (-1.5db @50Hz and usable bass into the 30's).

The above works from the analog outs of the TV and works with the TV remote on and off and volume up and down just like the built in TV speakers.

I feel I have real high end sound, unlike the sound bars. And the Audioengine 5's are $325 with all connections and cables supplied. Love the sound everytime I turn on the TV!
Two channel only of course.