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Thanks Arjay, Pretty high then given an EM272 is ~14dB. For the price I'll order a couple as they're <?1 each. But I hold no expectations.

The self noise figure for a capsule is normally calculated? by subtracting the published signal noise ratio in dB from 94. (? The standard refernece pressure (1Pa) is normally 94dB SPL @ 1KHz). So

Thank you for sharing. I copied, and made some adjustments to suit my needs. A ring in the middle to activate the clamping mechanism of the XLRE insert. A ring at the end to backstop the capsule. the

I discovered the electret the other day, whilst browsing online. It appears to have reasonable specs from what I can tell. However it doesn't publish a self-noise figure. Is there a way to derice this

Version 1 is definitely wrong, as nothing is really shielded.

Thanks for the troubleshooting. Here is the diagram with the two possibilities. In my opinion, perhaps wrongly, they are different.

I don't understand why you surmise that " /if I also place the Rs resistor next to the XLR connector and in this way I lose this protection/" You may place the resistor any place you choose, and in

First of all, I would like to thank the group for all the information they shared, as without it I would not have been successful. After some experimentation, I managed to get 9VDC from the capsule.

MS is a bit different than that. The Mid mic is cardioid and is panned center. So equal amounts in left and right. The side mic is figure 8. You send it in phase to one side and then invert it and

Haha that "not" is a mistake...

Do I create a proper mid/side setup by using 3 microphones => 1 hard left - 1 mid - 1 hard right? I guess by doing so I don't have to? deal with phasing issues?

Thanks, really appreciate all this help and info.

I've posted a easier to read PDF on my Google Drive. You can find it here: https://drive.google.com/file/d/1HCo-FlprkyOc7AldyMdqdHUubp-Wjfz_/view?usp=sharing

Thanks, that's some good info. I'll read up on Jules' link too. Do you have that schematic in a larger format? I can't make out what the transistors are properly

Yes - the 2 side capsules are connected out of phase. The idea was 'borrowed' :) from Jules' great M/S instructable here: https://www.instructables.com/Build-the-MS-Alice-Stereo-Microphone/ (Here's my

I made one pair of cardioid mics using Transsound TSB 140 capsules and simpleP48 powering, and they have been OK for general field recording. I think it's an easy thing to try first; you can always

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Thanks Arjay, It seems it could be a good candidate. I never knew you could use opposed cardioids as a figure 8. I assume they are wired out of phase with each other? For an XY, what circuitry would

I used 3 x EM204 capsules for an experimental Mid/Side mic I built into a BM800 body, and was very pleased with the results.? (Picture attached) I think the EM204 is probably the the best sounding