AUDIO TUBES | GERMAN TUBE HIFI | MY EQUIPMENT | CONTACT | ON EBAY

Siemens - Klangfilm

Introduction / Overview

Klangfilm History

Moving Coil MC preamps

KLV Eurodyn Rack Amps

KLV Preamps

Output Transformers
Speakers
Siemens 2000 Amps

6SELA Preamps

6SELA Power Amps

6SELA Tuners

Spare Parts

Typical Tubes

Racks

Miscellanous

Projects

Eugen Bauer

 
Siemens / Klangfilm 71919 Output Transformer  
         
   

Connectors:

 sw - yl: control speaker

 yl  - rd: 400 Ohms output winding

 triple coloured: feedback windings

 c - red/red - c: plate #1 - B+ plate #2

  Originally the output impedance is 400 Ohms with four secondary windings in series.

  Wired in parallel the output impedance will be 25 Ohms (Maintaining the same primary impedance). Still OK for 16 Ohms speakers.

 
         
   

Original secondary winding: 

 sw - yl (twin): 1.3 Ohms

 yl (twin)  - gr (right): 5 Ohms

 gr (left) - br (left): 7.4 Ohms

 br (right)  - yl (right): 7.4 Ohms

 yl (left) - rd: 6.3 Ohms

Conversion to 25 Ohms secondary:

1. Solder the two windings in the yellow isolation together and isolate them

2. Parallel the four windings you get taking care of phasing. All reds from the picture and all blues have to be soldered together.

 
         
     
         
 

 

 

 

BACK

TOP OF THIS PAGE

HOME