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Splitting an audio signal

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Twiggy
 Post subject: Splitting an audio signal
PostPosted: May 06, 2011 6:54 am 
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I was in a hotel in Sydney a few weeks back, and in the bathroom they had a split of the audio from the tv. I thought that was a pretty cool idea and would like to get it organised for my house.

We're still at bricking, so I can get it added in easy enough still, just need to know what I need to get added

Ta

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Pugs
 Post subject: Re: Splitting an audio signal
PostPosted: May 06, 2011 9:52 am 
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depends on how they actually do it.. it is easy enough to get some ip rated speakers / damp proof ones for bathrooms and then have them fed from an amp / signa source near the tv/ dvd player..

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wakeboardandy
 Post subject: Re: Splitting an audio signal
PostPosted: May 06, 2011 10:13 am 
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best way is to just run speaker cable from where your amp will be. If the amp has zone 2 then you can then play music to your bathroom whilst watching tv or anything else different at the location of your amp.

That is how I wired my outdoor speakers up, so same principle.


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Twiggy
 Post subject: Re: Splitting an audio signal
PostPosted: May 08, 2011 9:05 am 
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What if I'm not using an amp? Because it's just the bedroom tv we just use the tv speakers

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Pugs
 Post subject: Re: Splitting an audio signal
PostPosted: May 08, 2011 9:10 am 
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Twiggy wrote:
What if I'm not using an amp? Because it's just the bedroom tv we just use the tv speakers




how do you think the spreakers get powerd?

they will be need to be run off an amp of some kind be it a small in the wall plate amp or a reciver amp...

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Eskay40
 Post subject: Re: Splitting an audio signal
PostPosted: May 09, 2011 11:10 am 
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Sometimes people just make things harder than they need to be.

Twiggy, you'll need to check your TV. See if there is an AUDIO OUT conector on the back or maybe, if you're lucky, it will have Speaker left and right out. It will depend on how new or old the tv is. If you have the tv that has external speakers L&R out, then you just run the speaker wire to the bathroom. That is the best possible result as the TV itself will have the amp others are talking about.

If it only has Audio Out, it's a bit trickier. First, try and plug something into it, like a portable boom box with "Line In" and see if both the TV and the boombox are playing the sound. Sometimes using the audio out on a TV will actually turn off the tv speakers, which I'll assume is not the outcome you want. Many tv brands allow you to use the audio out at the same time as still using the internal tv speakers. If yours cancels the sound on the TV, then you may want to re-think if you want this. If yours plays the sound at both and you want to do this, then you'll need the amplifier others are talking about. The TV doesn't provide enough power out of that audio jack to run speakers. In the hotel rooms, if you look at the back of the tv stand you'll usually see a little aluminium box screwed to the back of the cabinet that is the tv amp and possibly a splitter. You will need to run a cable from your Audio Out jack to a small 2 channel amplifier - Not necessarily a full stereo amp. I would use a cheap car amplifier. They can be picked up for less than $50 on ebay. You could power it using a 12V power brick for a laptop or similar. They usually have RCA inputs so get a cable that goes from your "Audio Out" (usually twin RCA) to twin RCA plugs, connect up the amp in your TV stand or somewhere else out of sight and then run the speaker cable from that amp to your bathroom with a decent set of damp proof speakers. Note that the steam will eventually get to these too but you'll get some years out of them first.

For building, just run the speaker wire from the place where the TV will go to the bathroom ceiling and the rest can be sorted out later.

Hope that helped.

SK

edit:- or you could import one of these little guys to make it simple. Haven't seen any in Australia - http://www.pyleaudio.com/sku/PCA1

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Rodda
 Post subject: Re: Splitting an audio signal
PostPosted: May 10, 2011 1:42 pm 
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Eskay40 wrote:
Sometimes people just make things harder than they need to be.

Twiggy, you'll need to check your TV. See if there is an AUDIO OUT conector on the back or maybe, if you're lucky, it will have Speaker left and right out. It will depend on how new or old the tv is. If you have the tv that has external speakers L&R out, then you just run the speaker wire to the bathroom. That is the best possible result as the TV itself will have the amp others are talking about.

If it only has Audio Out, it's a bit trickier. First, try and plug something into it, like a portable boom box with "Line In" and see if both the TV and the boombox are playing the sound. Sometimes using the audio out on a TV will actually turn off the tv speakers, which I'll assume is not the outcome you want. Many tv brands allow you to use the audio out at the same time as still using the internal tv speakers. If yours cancels the sound on the TV, then you may want to re-think if you want this. If yours plays the sound at both and you want to do this, then you'll need the amplifier others are talking about. The TV doesn't provide enough power out of that audio jack to run speakers. In the hotel rooms, if you look at the back of the tv stand you'll usually see a little aluminium box screwed to the back of the cabinet that is the tv amp and possibly a splitter. You will need to run a cable from your Audio Out jack to a small 2 channel amplifier - Not necessarily a full stereo amp. I would use a cheap car amplifier. They can be picked up for less than $50 on ebay. You could power it using a 12V power brick for a laptop or similar. They usually have RCA inputs so get a cable that goes from your "Audio Out" (usually twin RCA) to twin RCA plugs, connect up the amp in your TV stand or somewhere else out of sight and then run the speaker cable from that amp to your bathroom with a decent set of damp proof speakers. Note that the steam will eventually get to these too but you'll get some years out of them first.

For building, just run the speaker wire from the place where the TV will go to the bathroom ceiling and the rest can be sorted out later.

Hope that helped.

SK

edit:- or you could import one of these little guys to make it simple. Haven't seen any in Australia - http://www.pyleaudio.com/sku/PCA1

Really? And this response is the simple one?

Fewer TVs have 'speaker L&R' ouputs than you think - it was more common on flat panels about 5 or so years ago when they were sold as just panels and their side speakers were optional. Most have audio out but it is line-level and DOES need to go into some sort of amplifier (which can then power the bathroom speakers, whether it's the second zone of a multi-zone amp or if it's a dedicated amp).

Even if your TV does have speaker outputs you need to at least consider what happens to the impedence on the TV's internal amp if you think you can just run 2 speakers from each terminal (L & R)...

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Eskay40
 Post subject: Re: Splitting an audio signal
PostPosted: May 10, 2011 4:52 pm 
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It may have been verbose but it was in simple language. Some of the responses here from some individuals are less than helpful - and I'm not talking about you Rod. Brevity doesn't make things simple. I was just trying to offer the OP a useful answer on how it could be done.

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Rodda
 Post subject: Re: Splitting an audio signal
PostPosted: May 10, 2011 5:48 pm 
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I'll put it as simply as possible:

Speakers must be driven by some sort of amp, and the amp included inside the TV is already spoken for.

The 'Audio Out' connections on the back of the TV are for allowing the sound from the TV to be sent somewhere else (ie. an amp or sound system of any description, as long as there is an amp involved. This amp can be sitting right underneath the TV or at the other end of the house - it doesn't matter where it is so long as you can get the audio cable to it), and it lets it happen at the same time (in my experience with many models) as the sound going straight to the TV's own speakers.

Your decision will be what type of amp you will use, where it will sit and how exactly you will work it. For what you want to do there are a few different ways to do it.

Plus, you will find that the TV's own volume control has NO EFFECT on the volume level coming out of the 'Audio Out' connections - that will also be controlled by whatever the 'other amp' solution ends up being.

There are no ways to short-cut what needs to be done here, and the cheapie solutions are not always the simplest ones to operate...

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cathepsin
 Post subject: Re: Splitting an audio signal
PostPosted: May 13, 2011 7:24 pm 
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Rodda wrote:
Eskay40 wrote:
Fewer TVs have 'speaker L&R' ouputs than you think


My TV does have the L&R speaker outputs but you have to choose whether you want the output on the internal speakers OR the output. So it sort of mutes one of the outputs while you use the other.


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Twiggy
 Post subject: Re: Splitting an audio signal
PostPosted: May 16, 2011 10:08 am 
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Pugs wrote:
how do you think the spreakers get powerd?

they will be need to be run off an amp of some kind be it a small in the wall plate amp or a reciver amp...


Didn't give that any thought to be honest.

What are some examples of amps I can pick up? Really doesn't need to be fancy. Would only be powering a single (stereo) in roof speaker

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