FS: Beyers and Pikatrons

[iprovlek]

Beyers 1:10 ratio....x4.....50eur  per piece

and one Beyer with 1:15 ratio...50eur

Pikatrons are 1:2 (3093) and 1:5 (3094)...x2...40eur pre piece

And some vintage microphone 1:7...x4.... 30eur per piece

 

[Murdock]

Do you have any information about the Vintage microphone transformers? Do you know the manufacture? Inductance?
And can you give me the dimensions please?

 

[iprovlek]

Key for Beyerdynamic input transformer model number:

1st digit=size of transformer (3)= studio grade (4)= headphone matching

2nd and 3rd digits= mounting version

4th digit= primary winding

5th and 6th= turns ratio

7th,8th and 9th digits= type number


TR/BV 351 310 005  which means:

Studio grade, stud mount, 2 split wound primaries- end of winding 1 connected to beginning of winding 2 and led out as a tap

1:10 turns ratio,200ohm impedance!!!

 

[Murdock]

Thanks!
But I meant the ones in the upper right of your picture. The 1:7  transformers.

 

[iprovlek]

I don't have specification of this transformers, I bought it in my town!

But know that they are 1:7 and that they are input microphone transformers...