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Author Topic: CTIA/AHJ 3.5mm plugs  (Read 1202 times)

Scott Helmke

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Re: CTIA/AHJ 3.5mm plugs
« Reply #10 on: October 22, 2019, 11:04:33 pm »

Maybe it would be worth hacking up an old set of Apple earbuds to find out which is actually implemented?

Electret mic w/ built-in FET means low impedance and high level. It probably just works.
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Andrew Broughton

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Re: CTIA/AHJ 3.5mm plugs
« Reply #11 on: October 23, 2019, 12:53:49 pm »

Maybe it would be worth hacking up an old set of Apple earbuds to find out which is actually implemented?

Electret mic w/ built-in FET means low impedance and high level. It probably just works.
I expect because they're all plastic connectors, the shell is moot. I'd like a more robust connector using a metal shell. I may just be out of luck!
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John P. Farrell

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Re: CTIA/AHJ 3.5mm plugs
« Reply #12 on: October 23, 2019, 12:55:52 pm »

I expect because they're all plastic connectors, the shell is moot. I'd like a more robust connector using a metal shell. I may just be out of luck!

I'd probably put some shrink over it if that's the case.  Not ideal but it'd work. 

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Andrew Broughton

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Re: CTIA/AHJ 3.5mm plugs
« Reply #13 on: October 23, 2019, 01:40:00 pm »

I'd probably put some shrink over it if that's the case.  Not ideal but it'd work.
Good workaround!
I expect I'm probably out of luck on finding what I would consider a "properly wired" metal shell connector anyway.
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-Andy

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Pete Erskine

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Re: CTIA/AHJ 3.5mm plugs
« Reply #14 on: October 23, 2019, 01:41:49 pm »

Maybe it would be worth hacking up an old set of Apple earbuds to find out which is actually implemented?

Electret mic w/ built-in FET means low impedance and high level. It probably just works.
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Mike Caldwell

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Re: CTIA/AHJ 3.5mm plugs
« Reply #15 on: October 27, 2019, 10:59:46 am »

I got a few TRRS plugs from Markertek and those all had the sleeve/mic connection tied to the shell.
That did not cause any issues for the breakout and adapter cables I made, I did put heat shrink on the connector though.

Andrew Broughton

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Re: CTIA/AHJ 3.5mm plugs
« Reply #16 on: October 27, 2019, 02:21:44 pm »

Thanks, Mike.

I've resigned myself to the fact that there are not any connectors made the way I'd like, so I'll have to suck it up and do that as well.

Cheers!
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-Andy

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drew gandy

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Re: CTIA/AHJ 3.5mm plugs
« Reply #17 on: October 28, 2019, 01:00:45 pm »

Thanks, Mike.

I've resigned myself to the fact that there are not any connectors made the way I'd like, so I'll have to suck it up and do that as well.

Cheers!

The added issue...  a "robust" metal connector will not likely fit into the case holes for the devices we're often using these plugs with.  We need slim connectors (and probably no shrink tubing) or connectors with a significant "shelf" or "step" that allows them to plug down into those phone and ipad cases. 
Of course, it won't be long till we're using bluetooth for all of these kinds of things.  That will have it's own challenges... 
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Pete Erskine

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Re: CTIA/AHJ 3.5mm plugs
« Reply #18 on: October 28, 2019, 01:25:16 pm »

The added issue...  a "robust" metal connector will not likely fit into the case holes for the devices we're often using these plugs with.  We need slim connectors (and probably no shrink tubing) or connectors with a significant "shelf" or "step" that allows them to plug down into those phone and ipad cases. 

https://www.amazon.com/Straight-3-5mm-Stereo-Headphone-Adapter/dp/B00TUC4CW6
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Pete Erskine
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Re: CTIA/AHJ 3.5mm plugs
« Reply #18 on: October 28, 2019, 01:25:16 pm »


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