Siemens - Klangfilm
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Output Transformers
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| Siemens and WSW transformers | |||||||
| * From the parts with askerisk I have singles. I offer them for trade or will buy yours! | |||||||
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Input transformers made by Siemens in their own plants are very rare. According to the samples I have found I guess they started to use transformers made by Haufe for them in the late 50s. Later - in the early 70s - they returned to employ transformers from their own fabrication. Here you can see some of them - made by Siemens in Germany or by their Austrian section, the Wiener Schwachstrom Werke in Wien (Vienna). Please note that this site is under construction and may be updated soon. |
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| Input Transformers | |||||||
| Type | Picture | Found in | primary DC secondary DC |
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Comments and Suggestions |
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WSW 17b/39 |
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???? |
20 Ohms |
1:15
24 dB |
Very rare. Made by Siemens on their own in Karlsruhe / Germany. 5,4x5,0x4,0cm. 0e.Röh.BV.17b/39 Great, outstanding quality. Perfect bass response. First choice for EMT Tondose TSD-15 and similar. |
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| 37 kOhms | |||||||
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71/769 III |
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KLV 408 |
74 Ohms |
1:?
? dB |
More info to follow (I hope) Many thanks to Jonathan from oswaldsmillsaudio. |
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| 2870 Ohms | |||||||
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714030 10/769 |
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KLV 502 |
75 Ohms |
1:10
21.5 dB |
Input transformers from the KLV-502. In this amp the input transformers is not really needed, but should stay inside! Very good quality and having a good frequency response. |
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| 2.7kOhms | |||||||
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6ZubBV 71/621V |
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Early 6SELA 2117 |
2x72 Ohms |
One of the best transformers made by Siemens. Excellent frequency response combined with higher gain and a variable input impedance. Perfect! |
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| 1.8kOhms | |||||||
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C72392-A246-A1 |
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late 1960s-1970s ELA amps |
14+14 Ohms |
1:10
20dB |
Interesting transformer found in early solid state ELA amps. Good sound and frequency response. |
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| 1700 Ohms | |||||||
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