Can I connect my stereo amp to my av Subwoofer at the same time?

[Narco]

I don't mean to use both at the same timd! More connect both and flick between the two. Maybe using a switch of some sort?

The sub has only 2 rca inputs, a dual purpose R/LFE and an L.

If a switch would allow me to connect them both to one sub, I'm at a loss what to look for as presumably such switches don't account for LFE, more more likely multiple inputs for 2 rca, for more than one stereo amp?

Any help appreciated

 

[Narco]

I'm guessing one of these is not a good idea?

http://www.nintronics.co.uk/Cables/cable-accessories/adapters-and-couplers/audioquest-hard-rca-splitter-rca-male-to-2-female-.html?gclid=CLGRm72JoMsCFYEy0wodUFQB4w

This would run a risk if I left the stereo and AV amps both on? Yes? If no, seems the perfect solution.