Replace Blackbox m10 3-prong jack - diyAudio
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Old 26th December 2012, 11:23 PM   #1
Dpad is offline Dpad  Australia
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Default Replace Blackbox m10 3-prong jack

Hi all
I'm new to the forums and DIY electronics.

I've been given a set of Phitek BlackBox m10 noise-cancelling headphones once used in business or first class in an airplane.

It has a three-prong headphone jack which I am trying to replace with a 3.5 stereo TRS jack.

Apologies for the rough photo.

Click the image to open in full size.

I believe the three prongs are a single TS and a pair of TRS jacks.

The wires are blue, red, yellow, green, black and white, along with some loose fibre I think is insulation.

I have no idea which cables are which, or how to attach the new jack.

Any ideas?

I have a soldering station and wire cutters to tinker with it.

Thanks guys, greatly appreciate any help

Last edited by Dpad; 30th December 2012 at 12:49 AM.
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Old 27th December 2012, 06:05 PM   #2
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I think the help you are looking for is here.
Someone already did it. Has some pics too.
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Old 29th December 2012, 01:03 PM   #3
Dpad is offline Dpad  Australia
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Default Re

Thanks!
Well I asked one of the forum users there about his advice on using a USB to power the headphones since I am a noob to this game. But I'm keen and have plenty of patience
id love any further advice on this
Thanks!
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Old 30th December 2012, 10:57 AM   #4
dheming is offline dheming  United States
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So do you need the noise cancelling part working as well or are you fine with just converting them to be regular headphones? I assume they will still work without power and that it's only for the NC aspect.

So connecting the L and R drivers to the new TRS connector is relatively straight forward. The 3 pin connector end you cut off will tell you which wire does what using a multimeter: strip all the wires a bit, test and write down the pinout of that 3 pin deal, ie which color wire is connected to which pin. Then we can move forward from there.
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Old 3rd January 2013, 06:44 AM   #5
Dpad is offline Dpad  Australia
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Thanks guys, ill get the multimeter and report back
I would ideally love to have the noise cancelling part working
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Old 4th January 2013, 02:58 AM   #6
dheming is offline dheming  United States
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I'm not sure of the range of voltage they will accept and still work. Looks like people have made similar headphones work on anything from 3 to 9VDC. So you should be able to power them using the 5VDC from a USB port. To use the NC function on the go you would have to build a battery box of some type.
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Old 24th January 2013, 04:33 AM   #7
Dpad is offline Dpad  Australia
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Thanks guys, been busy, though I promise I'll finish it.

http://image.bayimg.com/233c8958b919...b26a474c29.jpg


I had a stab at softly prying it open along the seam [red square]. It kept snapping back, and an edge seemed to be held down tightly, leading me to think I'd snap things if I tried to open it.

Though there must be a way and the seam looks like the obvious point. Should I just force it?

The other screw sections I opened [blue square] weren't helpful.

Cheers guys
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Old 24th January 2013, 08:37 AM   #8
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I have the M14s. They're held together with screws under the earpads. You need to peel off the earpads, they're held on with double-sided tape. The M10s might be the same.
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Old 2nd February 2013, 04:32 AM   #9
Dpad is offline Dpad  Australia
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got it open

inside both look the same
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But removing the outside cover yields this on one side
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And this on the opposite
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I bought this mulitimetre but have no bloody idea how to work it or what wires to test
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Im a total n00b at this, can anyone give me some simple steps?
Thanks!
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Old 23rd October 2013, 11:46 PM   #10
falco76 is offline falco76  Qatar
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Exclamation Hi Dpad,

Hope you got the connections right! I had these headphones lying around for a long time and after coming across your post, felt the urge to fix em up. I have lost the initial 3 pronged jack, and can't figure out the wires correctly. I found by a simple test that red and black are for right and left channel, and white is the ground. But I can't figure out the other 3 wires (green, yellow and blue.
Any assistance on this will be much appreciated. Hope you or any other members get a chance to reply.

Thanks in advance!
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