Just the microphone cartridge used as a microphone

 At your risk.

Today one inexpensive moving coil cartridge was tested. Its name may be Shallin D-26B.

The voice coil DC resistance was measured about 600 ohms.

It was then given AC voltage rather than taking from it by connecting it to the headphone output of the Sony CD Walkman usually used. So it was used as headphones. The sound quality was very nice. There was bass and white balanced bass, mid and high frequency content.

Compared to the Sennheiser HD 580, the HD 580 had more extended bass, treble, and less mid range but the sound quality from the mic cartridge used as headphones was possibly the closest to the HD 580 from many headphones expensive or inexpensive lying around the Pleiades lab.

Then it was used as microphone.

Signal path:

singing male voice - indoors (bedrrom0 or outdoors (balcony) - Shallin MC cartridge without a mic housing ie on its own at 24in from singer's nose - SONY TC-D5 PRO II - Sennheiser HD 580

The sound quality so surprisingly nice, without the boxy sound associated with many mics inside their housing. 

The cartridge on its own responds somewhat close to figure of eight.

One of the reasons for the natural sound could be the fact that there are no obstacles close to it like a microphone housing distorting the sound field.

Compared to the Shure Unidyne B Mexico, the Shure had more extended high frequency but the single mic cartridge sounded more warm or natural. How would Unidyne B sound without the mic housing?

How would 2 Shallin cartridges sound each back side placed at each ear for (3D) binaural recording.

How would 2 sound as stereo headphones?

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Would it be possible to create a stereo mic or headphones using just 2 such cartridges for both which could be rotated so that at playback diaphragm faces the ear, at recording diaphragm faces in the opposite direction.

There was handling noise when holding the cartridge by hand but the problem was much improved by suspending the cartridge by the 2 thin wires soldered to it.

How would 2 of them sound at stereo, at 90 degrees to each other and very close?