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Sony NEX-EA50 (all variants)
Including NEX-EA50UH / EA50EH / EA50H / EA50UK / EA50EK / EA50K


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Old February 9th, 2015, 10:50 AM   #1
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Microphone 3.5mm Stereo

how to connect this microphone to ea50?
What settings should I do from the buttons on the audio side of the camera?
http://i.ebayimg.com/00/s/MTAwMVgxMDAx/z/338AAOSwd4tTzyjA/$_57.JPG
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Old February 9th, 2015, 06:06 PM   #2
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Re: Microphone 3.5mm Stereo

Hi Serggio

First thing you need is to cut off the plug and solder on an XLR male plug. You COULD get a 3.5mm to XLR adapter but if it was me I'd not want any worries about bad adapter connections

If the mic has an internal battery then it's powered and doesn't need phantom power from the camera so take the switch one position upwards from the +48v position ...if it has no internal battery then leave the switch where it is.
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Old February 10th, 2015, 01:02 AM   #3
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Re: Microphone 3.5mm Stereo

Hi Serggio,

If you want to solder it you could read this old link and check out comment #5:

3.5mm to XLR mic cable

I did that once, but now I have a proper Sennheiser wireless mic.
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Old February 10th, 2015, 01:38 AM   #4
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Re: Microphone 3.5mm Stereo

has no internal battery,connect with xlr to stereo jack but I have no sound why?

xlr to female stereo cable http://www.kleopatraelectronics.com/...66dd5c0b50.jpg
and then put the male stereo cable with microphone, but I have no sound
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Old February 10th, 2015, 02:39 AM   #5
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Re: Microphone 3.5mm Stereo

First check your mic plug ... are you sure it's a stereo plug and has 3 cables coming from the mic?? Some mics are just mono and they are wired to a stereo jack plug the screen goes to ground and the live mic cable goes to the tip of the plug and then to send the signal to both channels the tip and second segment are looped together. You can easily check this with a multi meter. If the tip of the plug and the middle segment show a short circuit then it's a simple 2 wire cable with L &R joined ... with a mono cable setup to XLR you need to have the live wire go to pin 2 on the XLR and then the screen go to pin 1 on the XLR and finally pins 1 and 3 need to be bridged across.

Because the stereo plug has 3 wires coming out and the red and blue are going to pins 2 and 3 on the XLR when you plug in the stereo jack wired for mono all you are doing is shorting out pins 2 and 3 on the XLR plug so you kill the signal!

Cut the 3.5mm plug off ... strip the cable and solder the live wire to pin 2 and the screen wire to pin 1 and then bridge pins 1 and 3 .... if there is no battery in the mic (make sure first!!! as most cheap mics have a small AAA or a button battery) then switch the camera to +48v so you have phantom power
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Old February 10th, 2015, 03:46 AM   #6
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Re: Microphone 3.5mm Stereo

Why not buy something like this?

Samson QL5 CL Lavalier Microphone with Phantom Power at Gear4Music.com

It's what I use
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Old February 10th, 2015, 07:39 AM   #7
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Re: Microphone 3.5mm Stereo

I believe that microphone is intended for wireless transmitters that supply power via one of the contacts in the stereo connector and it's not really intended for this application. Inexpensive phantom power lavs such as Peter's recommendation of the Samson QL5 would be a better choice. A note of caution on the Sampson. It's a unidirectional (I believe made by Audio Technica) and may be prone to mechanical noise from clothes rubbing on the cable.
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Old February 10th, 2015, 08:05 AM   #8
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Re: Microphone 3.5mm Stereo

I think very few people would actually use a lav mic that is wired only directly into the camera. In the old days yes, but nowdays the common sense arrangement would be to plug it into a transmitter and have a receiver on the camera. Even when I shoot Realty Condition reports where the camera is on my shoulder I still plug the lav into the transmitter on my belt.

If you don't mind doing sync in post you could even get a voice recorder and plug the mic into that?
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Old February 10th, 2015, 08:37 AM   #9
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Re: Microphone 3.5mm Stereo

with Microphone 3.5mm Stereo make no edge
you might need wireless transmitter,
What I offer in order to be economically?
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Old February 10th, 2015, 11:50 AM   #10
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Re: Microphone 3.5mm Stereo

Just to confirm that that microphone cannot be powered by plugging it into a standard XLR socket on the camera. It will work on the usual radio mic packs that supply a polarising voltage - so you need to look for a lav mic with 48V phantom powering.
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Old February 11th, 2015, 07:34 AM   #11
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Re: Microphone 3.5mm Stereo

You're right Paul - Serggio needs to be looking at either the Samson I posted earlier or this combo of lavalier and phantom power module which I also have and sounds pretty good.

Pronomic P2 Phantom Power Adaptor: Amazon.co.uk: Musical Instruments

http://www.amazon.co.uk/gp/product/B...rch_detailpage

Pete
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Old February 11th, 2015, 02:41 PM   #12
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Re: Microphone 3.5mm Stereo

I found a few 48V phantom to 5v adaptors but they are really expensive - over a hundred quid! Not really a practical alternative.
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Old February 11th, 2015, 05:35 PM   #13
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Re: Microphone 3.5mm Stereo

Hi Paul

A lot of condenser mics only need a very small bias voltage to operate and it's actually quite easy to make a simple little box that converts most mics into powered ones. Often you only need a tiny AAA 1.5v cell in a small adapter box to get a condenser mic running. I don't quite understand however why a remote phantom supply is needed when your camera already has the facility? Are you inputting the mic into something else that cannot supply phantom power? Most cameras have it and most voice recorders have it too nowdays
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