Sony Ericsson / Sony : Symbian phones : Attempt tp make my own 2.5 - 3.5 converter
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Hi as the title says i have decided to make my own 2.5 - 3.5 jack plug converter as i lost my other one. So i brought a female 3.5mm jack socket from maplins now i want to wire it to the cable which is on the p800 headphones. Sound's simple but i need some help after splicing the p800 head phone cable i was greeted with 4 wires running under the sheath the colours are:
Red
Green
White (covered in plastic as oppose to colored copper)
Plain copper
obviously here we have Mic pos and Mic Neg and Ear phones Pos Ear phones Neg
I would like to know if any of you have the slightest ideas to what colour wire equals to sound pos and sound neg so i can wire this up to my female 3.5mm socket and have a good old 2.5 - 3.5 converter.
Please help me.
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Posted: 2003-09-26 20:19:05
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Hi Vermania, sorry I don't!
My first comment would be that the 4 cables are more likely to be:
Earth
Speaker left
Speaker right
Mic
If the earphones are stereo.
Hope I'm not teaching my granny how to suck eggs, but what I'd do is:
1. If I have a multimeter, I'd work out which pair of wires are for the earphones and which one is for the microphone. If you haven't got a multimeter use a batery (1.5 volts) and a bulb.
I'll make a test table if you want!?
Cheers Fletche
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Posted: 2003-09-26 20:51:20
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Just ripped apart the Mic housing and the chip has the markings which i needed basically
Red = Stereo Right
Green = Stereo Left
Copper = Mic pos
White = Mic Neg
thanks for your tip i did that as well and now the problem is figuring out which terminal on the 3.5mm jack plug female is postive or negative
it has a silver colored connecter and Copper coloured connector for me to match the wires up guess trial and error will be the game to play.
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Posted: 2003-09-26 21:02:27
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My guess is that the white cable is in fact the earth.
Fletche
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Posted: 2003-09-26 21:27:19
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think i need to earth it??
after wiring it all up the sound is very distorted. I think i may be foiled by cheap p800 headphone cabling damn those penny pinching bastards!!!
QUE Mixin to trot along and slap me with a forum rule breaking ticket.
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Posted: 2003-09-26 21:33:22
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Let me think about this!
Am immediate thought is do you have a high resistance connection, 'dry joint'?
Do you have a multimeter?
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Posted: 2003-09-26 21:42:25
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The connector (on the 3.5mm female jack plug) looks like this
l l
l l
l l
l O l
l___l
and all i did was loop the wire round through the whole a couple times and it holds in place pretty securley.
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Posted: 2003-09-26 21:51:50
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Quote:
On 2003-09-26 21:33:22, Vermania wrote:
QUE Mixin to trot along and slap me with a forum rule breaking ticket.
wasnt really a direct insult.. so ill let it slide
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Posted: 2003-09-26 22:00:32
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Are you coming on to me?
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Posted: 2003-09-26 22:04:21
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Sorry mate I was busy.
'and all i did was loop the wire round through the whole a couple times and it holds in place pretty securley.' - This could be the problem.
Does the audio distortion get worse when you move the cable about?
Some electrical connections need to be very sound (near 0 resistance). Just wrapping the cable round could well cause the audio to crackle. Ideally you should solder the connection, if you haven't got access to a soldering iron try somehow pinching the connection together to make it very secure.
Hope this is helpful.
Fletche
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Posted: 2003-09-26 22:57:55
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