HiFi system , Cinema System

[declan70]

Who's good at setting up a HiFi system to a cinema System and for my tv to pass through them both at the same time?
Do I need a receiver for it all to work?

My HiFi System is all - RCA
Cinema System is - HDMI "ARC" / Optical Cable
My Sony tv - HDMI, RCA , Optical , No ARC HDMI

 

[Alabalcho]

First, start with stating all equipment' brand and model numbers.
Then - what you are watching: TV, DVD/BD? How you're getting TV?

 

[declan70]

My Tv is Sony - KDL 40v4000
My Hifi system is Sony Shake X3D
My Cinema System is Sony HT - RT4

I'm watching normal tv or movies casted from my computer to chrome cast in the back of my tv.

 

[americanaudiophile]

Very simple because your TV has an analog RCA audio output. You need a pair of Y splitters ( male RCA to 2 female RCA) to connect both the Hifi and HTS at the same time.
https/www.walmart.com/ip/Rca-Ah25r-Rca-Y-adapter-1-Male-To-2-Females/16829790
I will suggest that you might not like both running at the same time but no harm in trying it.