impedance matching Transformers for audio

I'm 99% sure Russ used the 56 transformer in my original Shure 577B. He may have added some other stuff in there too....guess I should open it up and look. All my Astatic 636 mics have them in there also.

 

Omg rabbi,the mic falls under low impedance which means that the range for the mic to be useful is between <100 ohms and 600 ohms, there is nothing gained by trying to tune it to a precise match of the impedence.

In the case of most telex mics they are specifically made for a range of impedence from 50 to 600 ohms. And most of them function well on the low impedence scale.

Your gain or what you think as a gain will only come with some post processing of the audio coming out of the mic/element. This is how full fidelity is actually achieved. As handlebar mentioned using a one or two stage amp may be a good solution while you could build a simple zero gain amp with wide range to do the same job opposed to trying to build a transformer in hopes to do the same thing. The amp is not all about audio amplification. One reason why it is sometimes better to go that route is you can actually engineer the output impedence for a wider range even precisely than a transformer can do, the other issue is the drive it needs to achieve the conversion with a transformer, many times elements won't drive a transformer to the fullest extent,

And yes I know I could make good money but I lack ambition for this tedious stuff right now, beside testing them, I have two manual winders and a computerized winder that I got from different places through the years, they can do a lot but again it is tedious sometimes.

 

I could but I won't. I don't have time to do much right now.

Sorry.

I see the point of a bare element but there is not much gained by precise matching when you can use a general transformer to do the job. Too many factors involved.

I know there is a difference but the problem is you are trying to go around an open barn to get to the other side. Most of the time you can not tell the difference or it won't make a difference unless the rest of the audio chain has the same level of fidelity. Your preamp stage in the CB is the limiting factor, not the mic.

I am trying to remember which telex mic you are talking about because if it is the same one i'm thinking, it isn't made for loud but clear with limited bandwidth.

Are you trying to sell mics?

Anywho, have you actually tried any transformer to see what you can get out of it first?

 

OK now I got it. Let me look around this weekend I may have a solution but no guarantees.

So you want something that small (second picture)?