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question about RCA in from 2 sources to 1 input on projector

G

GunsMadeAmericaFree

Golden Member
At our church, the projector they are using has a single RCA input jack on it, but they have to keep switching back and forth between their laptop and the VCR during their Wednesday night presentations.

I found myself wondering if some sort of cable with 2 female rca inputs at one end, and a single male rca input on the other end, would allow them to just hook both up.

Would doing so allow the projector to simply show whichever (VCR or Laptop) was sending a signal at the time? If both were sending a signal at the same time, would it screw up the projector, or not work properly? I'm not exactly certain how this sort of thing would work, or if this would even solve their problem.

Thanks for any help!
 
They used to make mechanical multi-input RCA switch-boxes, I used to use them with all of my old game consoles with the Yellow/Red/White RCA wires, into one TV.
 
A simple two into one splitter cable has the most potential for problems, mostly pulling down the signal level but could even cause ground loop issues in certain situations.

If they are both sending a signal at the same time, yes that's going cause a mix on the input and what the projector shows.

There are mechanical switch boxes to solve this, or electronic ones that do the same but through an IC with a logical toggle of signal path.
 
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