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[d34th_r3c0n]

I was looking at MikeyMikeUK's Vu meter mod tutorial and he uses the audio line out's for the input to his meter...
anyways... since these are the line outs and grounds on the A/V plug i was wondering if i could put a headphone jack on the outside of my box and just wire it to those points and hook like a CD or MP3 player up to it so i could do custom soundtracks on games without the support...

Q: could i put a headphone jack on the outside of my xbox and it send the signal through the tv? maybe also use it for headphones too?

CONCEPT:



could this be done?

[Trevante]

I'm pretty sure that's not possible. It's not an issue of making the proper connections, it's just that the Xbox hardware is not designed to input audio from the A/V pins. If you put a headphone jack on your Xbox, it would output audio, not input it, in which case the only use you could make of it would be to hook up a pair of headphones or speakers to it.

[Mr Ed]

If those are outputs, how would you do inputs on output pins?

Also, headphones are amplified, and line-out isn't.

[d34th_r3c0n]

ok i shouldnt have said Line-In.
I want it to work like a mixer of sorts...

CODE

XBOX audio>\
             > A/V cable > TV Speakers
CD player >/

so i could disable music on games and play it from a cd

hook up a cd player through the jack

have it mix with the signal going to the A/V cord

send it through the cord

have both output through the TV

THAT IS WHAT I MEAN...

[d34th_r3c0n]

anyone?

[Mr Ed]

Uh, dude this isn't rocket science.  The best thing to do would be to do it in a cable, not into your XBOX, so you can modify it quicker for different combinations.

Sounds like you want RCA connectors out to your TV and the ability to take a stereo headphone connector inline as well (1/8").

Ok, you can simply get some adapters that do that.

You need two of these, to go into your TV ( A ):  http://www.radioshac...sp?find=274-881

Then to go into those, you'll need your standard XBOX A/V cable like you've been using, plus one of these ( B ): http://www.radioshac...sp?find=12-2057 to go to your CD player's headphone jack.  If you want a female connector instead of a male one, just add this to the front of that adapter ( C ): http://www.radioshac...p?find=274-1555

So you would end up with something like this:

CODE

XBOX>---XBOX A/V Cable--------------
                                     \
                                      \
                                       >( A )> TV Speakers
CD player>--Headphone Cable--( C )--( B )-/

BTW while the monster splitter I chose for ( B ) is a little pricy, you can find much less expensive 1/8" headphone splitters to two RCA connectors at Fry's etc.

[d34th_r3c0n]

i just wanted to do it so all i had to do is plug it into the xbox instead of go through all the cables... if i wanted to mess with all the different things i could just get a little mixer and plug the xbox and cd player into it and hook that up to the tv... just wanted for it to all be one thing not a bunch of cables... also i would be a cool mod to do just for the hell of it

CODE

xbox >----------   ________
                  \|       |
                   | mixer |------------TV
cd >------------ /|_______|

[d34th_r3c0n]

bumpity bump

[d34th_r3c0n]

nobody?

[Mr Ed]

QUOTE(d34th_r3c0n @ Jun 2 2005, 06:22 PM)

nobody?

[thesideinguy]

i dont see why you couldn't make this work. but you would have to add diodes.
if you put the thing together, youll have a mixture of xbox and whatever audio imput device you use.



XBOX audio> diode >{--\
------------------------------ > A/V cable > TV Speakers
  CD player > diode >{--/

[mikeymikeuk]

QUOTE

but you would have to add diodes.
if you put the thing together

You don't want diodes. Diodes will just rectify the signal. Audio signals are AC.

A couple of 10K resistors would do the job. This would avoid overloading the outputs.

XBOX L --------- 10K ----+
------------------------------|----------- Left
CD Player L ---- 10K ----+

XBOX R -------- 10K ----+
-----------------------------|----------- Right
CD Player R --- 10K ----+


That would give you an input impedance of 10K and an output impedance of 5K.

The best way would be to use a couple of op amps (like the LM353) to mix the signals together but then you would need a split rail supply (+ and - V).

[thesideinguy]

QUOTE(mikeymikeuk @ Jun 3 2005, 04:23 AM)

You don't want diodes. Diodes will just rectify the signal. Audio signals are AC.

[mikeymikeuk]

QUOTE

the reson he needs diodes is to keep the audio on the xbox and the other adio device from fighting each other and trying to go the wrong way.

I see what your thinking but that wont work. If the signal was DC then yes it would but and audio signal isn't DC its AC.

QUOTE

do you even know what a diode does?.

A diodes does a number of jobs. Yes current will only flow when its forward biased. So in the case of the audio signal only positive going half cycles will pass while the negative going half cycles wont. So you end up with a half wave rectified signal.

Don't believe me then check out some diode basics.

QUOTE

because i dont seam to recal any diodes rectifying anything.
that would be a compasiter

WTF is a compasiter ?

The way to do it properly would be to use a voltage follower opamp arrangement or a single common emitter amplifier stage using a suitable transistor. That way there would be no crosstalk between the two channels.

[d34th_r3c0n]

so how exactally would i do this... im not very well educated in electronic components, my grandfather would probably be able to explain it to me if you tell me what i would need and schematically how i would need to arrange it to work...

but atm i am extremely confused with all this bouncing back and forth.

i am glad that it could be done and that i am getting support