Siemens - Klangfilm
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Output Transformers
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| Siemens / Haufe input transformers as MC transformers | |||||||||
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All Siemens / Haufe transformers are mu metal shielded. All (except for the older versions with folded mu metal housing - see below) have the yellow or orange tape where their type number is indicated. |
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| Siemens Haufe Type T38 | |||||||||
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Rare - bigger size - input transformer. Great sound. Same amplification as T-41, but lower input impedance which makes it very versatile also for lower Z cartridges. |
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| Siemens Haufe Type T41 | |||||||||
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Quite common transformer found in Siemens preamps with 200 Ohms balanced inputs for microphones. Looks the same as the T42 below. |
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200 Ohms input impedance. Very versatile. Works with all MC cartridges I have tested. Good amplification of 22dB. Great frequency response. Perfect for Denon DL 103. |
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| Great sound. I got a letter from a Korean audiophile who praises its dynamics also compared to the Lundahl and Tamura transformers. I love it, too. | |||||||||
| Siemens Haufe Type T42 | |||||||||
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These transformers were used in the Sf. V 6.7 (green) EL84 PP amp and in other amps as input transformers for photographic movie sound projectors. |
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Very low DC input (primary) impedance (3 Ohms). This way they only work fine with cartridges having low output impedance. High amplification of 26dB. |
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| Great sound - very dynamic. Very good with the Ortofon SPU and other ultra low impedance MCs. | |||||||||
| Siemens Haufe Type T108 | |||||||||
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Very rare input transformers. I have found this pair on a power amp with 4 EL34 per channel. |
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Impressing low frequency response and slightly louder highs. 20dB amplification. |
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| Works great combined with horn speakers which lack some highest highs. Cool. Great. Rare! | |||||||||
| Siemens Haufe Type T4365 | |||||||||
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Very rare input transformers. Perfect frequency response |
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Impressing low frequency response and 23dB amplification. |
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| Siemens Haufe Type T110 | |||||||||
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Perfect match for EMT Tondose TSD 15, XSD 15, TMD 25 (all 24 Ohms) and OFS 25. |
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| Siemens Haufe Type T172 | |||||||||
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Very interesting transformer. Hard to find. Slightly larger than the T41 or T42 types. |
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Great frequency response and higher amplification than T41. |
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| Be aware! There are also 1:1 input transformers with T172 type number. | |||||||||
| Siemens Type Bv. 17b/39 | |||||||||
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Ultra rare 1950s input transformers from the Austrian Klangfilm section ("Wiener Schwachstrom Werke"). |
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This type of transformer shielding was only used until the very early 60s (the KL V502 was one of the last amps having such transformers). |
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| Siemens 714030 10/769 | |||||||||
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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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