| Boxed vintage input trannies as MC transformers | |||||||||
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Here you can see how input transformers can be mounted. Klick here to go to the data site showing test results and specifications |
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| Sennheiser / Labor W (Wennebostel) | |||||||||
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Super rare German high end quality. Found in studio equipment and high quality Bauer/Klangfilm units. I have seen them in an old catalogue and they were very expensive!!! |
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This is the only 1:45 (33dB) transformer I have ever seen for microphones. Works perfectly with all MC cartridges I have tested. |
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| Perfect sound on the same level as the Siemens transformers. Very dynamic, but maybe I was fooled by the higher amplification. | |||||||||
| Telefunken 42.5102.055-26 | |||||||||
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Great sounding transformers of very high quality. |
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| "Dynacord" 3553 | |||||||||
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Common transformer of very good quality found in many German microphone preamps. I do not know who made them, but this pair comes from a Dynacord amp. Grey PVC covers protect the trannies. |
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These have split primary windings with two 1:10 windings (for 20-21dB of amplification), so that you can also get 1:5 if you want. Pretty good frequency response. Primary DC = 2x50 Ohms, secondary = 7.5 kOhms. |
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| Very nice sound. Also found in green/grey plastic cans. | |||||||||
| Beyerdynamic | |||||||||
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Small, but always good working transformers. Some of the Beyerdynamics have pretty high gain. |
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| Sennheiser / Labor W (Wennebostel) | |||||||||
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Super rare German high end quality. Found in studio equipment and high quality Bauer/Klangfilm units. I have seen them in an old catalogue and they were very expensive!!! |
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This is the only 1:45 (33dB) transformer I have ever seen for microphones. Works perfectly with all MC cartridges I have tested. |
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| Perfect sound on the same level as the Siemens transformers. Very dynamic, but maybe I was fooled by the higher amplification. | |||||||||
| Sennheiser TMB003 | |||||||||
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Common smaller version of the above transformer. Found in Klein + Hummel, Telefunken and - of course - Sennheiser units. |
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Also works very fine. Pretty high 26dB of amplification and very good high frequency response. |
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| Click here for the data sheet. | |||||||||
| JS Transformers Denmark | |||||||||
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OK, this one is not German, but is vintage too. JS (Jorgen Schou) later worked for Ortofon... |
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Sounds very good on the same level as most Siemens / Haufe transformers. Low input impedance - perfect for SPUs or EMT Tondose. |
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| Here is a picture of the original amp they are coming from. | |||||||||
| JS Transformers Denmark | |||||||||
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Another pair. Slightly different regarding the impedances. The medium input impedance of the shown type is good for many cartridges. |
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Oh the types! Take care as similar looking units with the same name (as 0.32M) can house different transformers. Carefully read the fine print! Here is another picture. |
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| Beyerdynamic Bv. 35 665 | |||||||||
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Very little transformers, but of outstanding quality. Also found in later Siemens and professionel Amperex units. |
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Amplification is 23.5dB and the frequency response is very linear (down to 7Hz and higher than 35kHs for -3dB). |
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| Melodium E 40ES | |||||||||
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Great working French input transformers from the late 50s or early 60s. High amplification of 30dB. Here is another picture. |
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