API 312 mic input transformer porn

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
john_b_1.jpg

x
john_b_2.jpg

x
john_b_3.jpg


I dotored those a bit to make them web friendly.
I hope you don't mind.
cj :guinness:
 
Thanks for posting these CJ!
The only part number you can't see is for the Cinemag, it's the CM-75101APC. I wan'ted people to see them next to each other for scale, on a layout in a restricted area, the Cinemag would fit easier. The pins on the Lundahl are of a considerably larger guage. The pin spacing of the Jensen and Lundahl match per row but the rows are much further apart, the rows of the Cinemag are a little further apart than the Jensen but the pin spacing per row is tighter. I really, really like that Jensen props up the transformer off the board. How different do they sound? I have no idea, I'm still a ways away from building them.
Kelley
 
I've been wondering why it is that the 2622 has six pins - two primaries and one secondary, while the Jensen and the Cinemag (I believe) have one primary and eight pins. Two of those are not connected, naturally in such a way that they can't be just lopped off for a 312, and the other two are the case and the shield. Are the Jensen and Cinemag quieter because of the ground and the shield?
 
Lundahl uses a humbucking coil structure, whereas Jensen and Cinemag use a single coil. So the Lundahl will naturally be a little quieter, me thinks.
cj
 

Latest posts

Back
Top