RE: CE_ntrance PM1 10mm CAPSULE ID +

[Vaughan]

 

I have two related but separate questions:

I am trying to ID tht CE_ntrance PM1 10mm CAPSULE LINK 1

and also some key components of the circuit board. 

Here you can see the inside as much as I can get it open. The caps are 10pu F6.3v , 85*cM, but I am having trouble identifying the white and black cable, for example does P stand for Positive ?? LINK2, LINK3

[Derek H]

Maybe a custom Primo?

[Vaughan]

The Primo that comes close is the 182 but can't confirm.

[Jason Nicholas]

Have you tried just emailing CEntrance? They are quite responsive. I’ve written them several times in the past and usually get detailed answers back from the founder, Michael Goodman. 

[Paul F]

PM is not a standard circuit board reference designator. P would be plug. There is only one reference I found for PM meaning permanent magnet. 

 

The capacitor on the left looks deformed as though it has failed. 

 

Very dirty circuit board (left over flux). Is that the way it looked from the factory or are you still working on it? 

[Vaughan]

PM1 _ Pivot Mic , (beautifully made, but bright even shrill- https://soundcloud.com/eco-acoustics-soundscape/deep-in-the-forest-hd-022022) . Didn't contact Mike as I genuinely love his R4 mixerface recorder which has withstood many hundredes of fieldwork hours running in continuous 24 hour shifts in the heat, dust, rain. It has a wonderful sound signature for quiet recordings and except the battery, remains in great shape  so it feels like a faithful friend. If it had a 32 float version, I would have bought several more.  So didn't really want to describe why I was destroying these mics. Finally I have repurposed the PM1's into two pairs of field mics with the well known Em272z1 capsule and discarded the original circuit boards alltogether and installed Nishicon GF caps to achieve 5v from inside the plugs. In the second image you can see the PM's tiny brass capsule housing, in the third the the XLR housing: