How to Hook up a Stereo to an Epson Projector

By Steve Lander

A 3.5 mm stereo plug connects to your projector or computer.
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Many Epson business projectors, despite their display abilities, frequently have low-powered monophonic speakers, which makes them less than optimal as audio presentation tools for anything but small conference rooms. To help solve this problem, some Epson projectors have audio outputs that you can connect to an audio system for richer sound. For projectors that lack audio outputs, connect your computer directly to the stereo system in the room where you'll be presenting.

Projector With Audio Output

Turn the stereo system off.

Insert the 3.5 mm stereo plug into the projector's Audio Out jack.

Insert the two phono plug ends into open audio inputs on the back of the stereo receiver or amplifier. Note which input name you use and insert the red plug into the R or Right channel input and the black or white plug into the L or Left channel input.

Turn the stereo system on.

Select the input on the stereo to which you connected the projector. Depending on the configuration of your particular stereo, you would press a button that's marked with the name of the input, press a button marked "Input" or "Source" repeatedly, or use a menu system to select the input.

Adjust the stereo's volume control to an appropriate level.

Projector Without Audio Output

Turn off the receiver or amplifier to protect the speakers from transmitting the sounds of you connecting the computer.

Insert the audio cable's 3.5 mm plug into the Audio Out, Line-Out or Headphone jack on the computer.

Plug the phono ends of the audio cable into a stereo analog input on the amplifier or receiver. Match the color codes of the plugs to the color coded jacks on the receiver -- red to red, and black or white to black or white. Note which input you use.

Turn the amplifier or receiver on.

Use the stereo's source selector to select the input to which the computer's audio output is connected.

Turn the volume up or down to find an appropriate listening level.


If the line-in cable is too short, use a 3.5 mm stereo plug to 3.5 mm stereo jack extension cable between the projector or computer and the audio line-in cable that connects to the stereo.