LCD Projector to Mixer?

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DJ Gray

New DJ
Oct 25, 2006
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I've had a request to use my speakers for an LCD presentation. The set-up is an LCD Projector with Laptop connected to it. I have been asked could they run the audio out from I presume the laptop to my mixer. They only have the single out from the computer (1/8' RCA). Can I use an (RCA) splitter and run that into my mixer on one of my channels and get sound through to my speakers?

I Would appreciate some help I have to meet with client tomorrow night.
 
DJ Grey, if you don't have any... you might want to go to radio shack and pick up some "unbalanced RCA to 1/4" adapters" we pretty much use these for all sound occasions. And you will find that you have more control over the mix via EQ and sliders versus a knob (usually patched in a RCA "tape in" slot).

However, I'm pretty sure you have some, just wanna make sure your bases are covered.
 
Travis B said:
DJ Grey, if you don't have any... you might want to go to radio shack and pick up some "unbalanced RCA to 1/4" adapters" we pretty much use these for all sound occasions. And you will find that you have more control over the mix via EQ and sliders versus a knob (usually patched in a RCA "tape in" slot).

However, I'm pretty sure you have some, just wanna make sure your bases are covered.
Click to expand...

So you are saying to input to my mixer (2) (L & R) RCA inputs off a 1/4 ' output from the Computer? I don't think the output is 1/4" on the computer?

Or are you saying go from a RCA output off the Computer into a 1/4" input on my mixer? I don't have 1/4" inputs on my mixer other than Mic Inputs? Afraid you've got an Electronics newbie here.....???
 
because everything is line level you can use adapters to get to where you need to go.

You will start with 1/8" jacks which are headphone jacks, usually a Stereo 1/8" to L-R RCA is sufficient. Then get regular old stereo RCA cable, male to male on both ends. Finally get a RCA to 1/4" adapter. These will have a female RCA to a male 1/4" on them. You will need unbalanced, which you can find out by looking at the 1/4" adapter itself. If it has 2 black bands it is balanced if it is one it is unbalanced. This is important for XLR to 1/4" but not for RCA.

As long as you don't get an adapter that has two rca's to 1 balanced 1/4" your fine, those are used for a completely different applications altogether. Something beyond the scope of this post.

When is your show, if you are unsure I can get whatever you need and mail it off to ya.
 
Travis B said:
because everything is line level you can use adapters to get to where you need to go.

You will start with 1/8" jacks which are headphone jacks, usually a Stereo 1/8" to L-R RCA is sufficient. Then get regular old stereo RCA cable, male to male on both ends. Finally get a RCA to 1/4" adapter. These will have a female RCA to a male 1/4" on them. You will need unbalanced, which you can find out by looking at the 1/4" adapter itself. If it has 2 black bands it is balanced if it is one it is unbalanced. This is important for XLR to 1/4" but not for RCA.

As long as you don't get an adapter that has two rca's to 1 balanced 1/4" your fine, those are used for a completely different applications altogether. Something beyond the scope of this post.

When is your show, if you are unsure I can get whatever you need and mail it off to ya.
Click to expand...

My show is Sunday.....I follow up to the point where you say go to 1/4", where do I input on my mixer a 1/4" input. All of my input channels are the typical Cd/phono inputs which are RCA?? I guess I'm lost??
 
Gray - perhaps this will help give you more of a visual.

The 3.5mm cable plugs into the speaker/headphone output of the laptop. The other end of the 3.5mm cable plugs into the 3.5mm to RCA stereo adapter. The RCA plugs into one of the inputs on your mixer.
 

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My problem was that I will not be able to check this until the date of the event. The client indicated the presentation was done as an MP3 file? I finally got it clear that it was a powerpoint presentation. I've used the RCA's with adapter in the past, but never off a laptop.....thanks for all your help
 
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