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TRRS headphone/ mic to pro connectors? Mic power?

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TRRS headphone/ mic to pro connectors? Mic power?

Postby resistorman » Tue Nov 17, 2020 12:33 am

Hi, I have some wired headphones with a "lav" mic built in made for plugging into phones, computers, etc. I want to plug it into my Model 12 mixer for Zoom calls, so I bought a splitter cable and that's fine for the headphones but I believe the mic needs power as discussed here:

https://www.epanorama.net/circuits/micr ... tml#basics

Has anyone done anything like this and can give me some tips?
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby resistorman » Tue Nov 17, 2020 12:52 am

Though it might just be easier to use a virtual mixer like voicemeeter? I want to send whatever's coming in to my mixer plus my headset mic to Zoom. My PC has standard connectors and a built in soundcard which will work for the headset. I do have studio mics I could use with the Model 12, but I like to be able to move around freely.
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby ef37a » Tue Nov 17, 2020 1:26 am

I have two headsets both with dynamic mics and they terminate in 3.5mm jack plugs they plug into a "TEKNET" USB dongle and the setup works beautifully for Skype.

I don't know if the mic jack delivers a DC supply, will check the morrow.

Dave.
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby James Perrett » Tue Nov 17, 2020 2:28 am

I've used an AKG battery box to power various plug-in power microphones in the past. If you want to use phantom power to power the mic then take a look at the various circuits for the Radio Shack PZM as they'll work for most electret condenser capsules.

Something like this might work (although I've not tried it personally)

https://www.thomann.de/gb/the_t.bone_cc_100_rc_ew.htm
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby resistorman » Tue Nov 17, 2020 3:37 am

Thanks... Voicemeeter is a bust, only works with ch. 1 of Model 12. Zoom's like that too. Trying various things, but this all seems far more complicated than it should be!
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby ef37a » Tue Nov 17, 2020 8:14 am

http://www.tecknet.co.uk/ua110.html

I will check for mic power later but the adapter is so cheap and handy get one anyway?

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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby resistorman » Tue Nov 17, 2020 4:10 pm

ef37a wrote:http://www.tecknet.co.uk/ua110.html

I will check for mic power later but the adapter is so cheap and handy get one anyway?

Dave.
Thanks Dave... this is a likely looking adapter, but my Pc has this kind of input. What I’m after is a way of powering the headset mic and plugging it into a standard mixer input. It looks like I just need a resistor, cap, and 9v battery to do so.
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby Hugh Robjohns » Tue Nov 17, 2020 6:11 pm

You require something like this:
Image
https://www.thomann.de/gb/the_t.bone_cc_100_rc_ew.htm

Which converts phantom power from an XLR mic input on your mixer to plug-in power for an electret mic connected via a 3.5mm plug. It'll set you back about £15.
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby resistorman » Tue Nov 17, 2020 8:00 pm

Hugh Robjohns wrote:You require something like this:
Image
https://www.thomann.de/gb/the_t.bone_cc_100_rc_ew.htm

Which converts phantom power from an XLR mic input on your mixer to plug-in power for an electret mic connected via a 3.5mm plug. It'll set you back about £15.
Thanks Hugh and James for recommending this. I’ll try it out if I can get shipping across the pond...

EDIT: Well, they wanted 40 euro shipping for a 12 euro part, so I'll pass! Guess I'll homebrew something.
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby James Perrett » Tue Nov 17, 2020 8:47 pm

resistorman wrote:EDIT: Well, they wanted 40 euro shipping for a 12 euro part, so I'll pass! Guess I'll homebrew something.

Most of the TBone range are just badge engineered generic Chinese pieces of gear so it is likely that there's something similar in the US although I've not been able to find anything yet.
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby resistorman » Tue Nov 17, 2020 8:57 pm

James Perrett wrote:
resistorman wrote:EDIT: Well, they wanted 40 euro shipping for a 12 euro part, so I'll pass! Guess I'll homebrew something.

Most of the TBone range are just badge engineered generic Chinese pieces of gear so it is likely that there's something similar in the US although I've not been able to find anything yet.
Yeah, I've been looking too but nothing is turning up. It's actually hard to find the right search terms :headbang:
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby Hugh Robjohns » Tue Nov 17, 2020 9:06 pm

Try this

https://www.bhphotovideo.com/c/replacement_for/1449007-REG/deity_microphones_dxlr_d_xlr_locking_3_5mm_to.html

Or search for a phantom power adapter, adding the terms plugin power and/or 3.5mm
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby Martin Walker » Tue Nov 17, 2020 9:33 pm

Thanks for all this info folks - it's exactly what I need to add my budget mic/headset to my main audio interface so I can combine both for future Zoom purposes.


Martin
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby resistorman » Tue Nov 17, 2020 10:10 pm

Hugh Robjohns wrote:Try this

https://www.bhphotovideo.com/c/replacement_for/1449007-REG/deity_microphones_dxlr_d_xlr_locking_3_5mm_to.html

Or search for a phantom power adapter, adding the terms plugin power and/or 3.5mm
Thanks! Ordered a generic one for $15 US with free shipping.
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Re: TRRS headphone/ mic to pro connectors? Mic power?

Postby al_diablo » Thu Dec 03, 2020 9:13 am

It might be a bit of a hijack, but I'm interested in doing the reverse - using an akg c417pp with a video mixer that has 3.5mm powered mic inputs. Is that possible or are the power requirements too great?
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