How to connect TV speakers to PC

S

samatre

Contributor
I recently bought a 1:2 RCA cable.
I connected the 2 male connectors to the TV end and the stereo jack to the PC end. I switched on the TV and choose AV 1 as the mode but I am unable to hear any sound.

Have I goofed up something ?
I did this bcos I have a Samsung CRT with good stereo speakers with a woofer unit mounted on top of the TV. So would like to utilize them until I buy the MX5021.
 
You're procedure sounds right.

You sure that the end that you've connected to your PC is a stereo (3.5mm) jack and not an RCA connector? Sure that the RCA jacks are plugged into the red and white RCA receptors on your TV? Have you turned up the volume on both your TV speakers and the computer? Are you sure that you've plugged the stereo jack into the speaker out on your PC and not the microphone in?
 
The stereo jack is thinner than the RCA connector isn't it ?. I'll try to attach a snap of the setup when I go home. I am pretty sure that I connected the stereo jack bcos the RCA conectors are colored Red and White but the jack is black. I connected this jack into the speaker out which is green right ?. The only point I am not sure was the second one - whether the volume was up on both the TV and the computer !!

I have a doubt : Is it that audio is only enabled if a video signal is detected on the TV for AV inputs ?
 
I don't exactly know the colour coding of the speaker out. Just make sure that it's connected to the o/p where you would otherwise connect your speakers to the computer.

Yes, the stereo jack is thinner and has 2 black bumps or seperations on it(not sure what you call them) unlike an RCA connector.

W.r.t audio being enabled only if a video signal is present, on the A/V inputs, maybe it is the case with some TVs. But I haven't experienced that problem. Actually, I just got a Zenega DVB installed at my place(digital video broadcaster....I'll be writing about this in another post...don't have a cam to take pics as yet) It's connected to my TV via A/V (red, white and yellow composite). I get audio when I switch on my TV and when the DVB video output is not switched on.

The damn thing is, I get the same audio when I switch from A/V input to DVD input on my TV as the audio inputs for A/V and DVD are same.(Don't have a DVD player as yet but this will be a problem if I want to install one.)
 
Hi Sydras,

Well, I think the setup you wrote about is a little different than the one I have.
Eg. : I have a DVD player connected to the TV via A/V (red, white and yellow composite) just like you mentioned for the DVB. Even I get audio when i switch on the TV and DVD player and then remove the composite connectors. !!

But in my original post I tired to connect the 1:2 cable to a 3 pin A/V port which has 2 pins for L and R audio and 1 pin for the video (no red, white and yellow composite).

And yes I feel you will face this problem you mentioned about the same audio when you switch from A/V to DVD i/p. THis is bcos I guess your TV and my TV do not have digital audio inputs. The pins that you use for DVD audio are analog stereo inputs.
 
Samatre,

Yes I got your problem. (I was just ranting about my own in my earlier post...sorry. Btw my problem is that the DVD does not have seperate L and R inputs. They are shared with the yellow video input).

You're basically using a 1:2 RCA and just using the L and R audio inputs on your TV.

Well, only other thing to do is try another cable. Nothing else could be wrong as far as I can see. Or, if you can get an A/V source like a video camera, you can test if the sound comes when a video input is also given.
 
Here's a suggestion from me to figure out whether either of the two assumptions is right. The assumptions I am talking about are:

1. Is the audio squelched when there is no video signal?

2. Is the cable OK?

Plug in the two RCAs to the TV audio inputs. Hold the stereo phono jack by the plastic insulation in one hand and gently touch the metal tip with a finger of the other hand. You should get a burrrr sound mainly from one speaker. Now take a pin and touch the metal ring of the phone jack just inside the metal tip and you should get the burrr from the other speaker.

If that works then there is nothing the matter with your cable or TV.
 
Yes, Chaos I guess this is the case with my TV also.
So my desire to listen music from good speakers will have to wait for sometime !!
Btw what could be the reason for muting the audio in the absense of a video signal ?
 
Your guess is as good as mine. If your video card supports TV-out then run a cable from ur video card to the tv video input. Then audio will work.
 
you can even try connecting your dvds video cable and audio from your pc, keep the dvd player on, you will hear the sound from your pc. I guess it should work.
 
Samatre, glad to know that your issue is solved. I guess your problem is the same as pointed out earlier i.e. no audio without a video signal via the composite in(or A/V in as it is known popularly).
 
just insert some disk and leave it, then you can listen to music. You can even insert a picture CD or DVD and see a nice slide show, while listening to music.
Enjoy the music.
 
samatre said:
Btw what could be the reason for muting the audio in the absense of a video signal ?
Click to expand...

When there is no detectable/decodeable TV signal at the RF, the speakers produce too much noise. The audio is muted to prevent this loud hissing noise. My guess is that the design is such that the muting is done based on the level of the decoded video signal. In this case, when you select the AV input as the source and there is no video signal, the circuit assumes it to be a poor signal situation and mutes the audio. As I said, all this is pure conjecture.
 
Hello Emil,

So basically the speakers are muted to prevent them from catching this "Radio wave " due to the electromagnetic field generated by RF.

Got it ... thank you very much for this informative post.
 
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