| Vintage German Input Transformers - data | ||||||
|
Type |
Picture |
primary DC secondary DC |
ratio |
Comments and Suggestions |
||
 |
Beyerdynamic
35533 |
|
44 Ohms |
1:3
4.8dB |
Outstanding frequency response (absolutely linear). Can size: 1,5cm x 2,0cm. |
|
| 480 Ohms | ||||||
|
|
Beyerdynamic
35549 |
|
25+28 Ohms |
1:15 1:30 23.5dB 30dB |
Great overall frequency response (-3dB at less than 10Hz) - very linear highs (20kHz: +0.5dB, 35kHz: -3dB) Similar to type 35665 with split primary winding. |
|
| 4.7 kOhms | ||||||
|
|
Beyerdynamic
35550 |
|
16+18 Ohms |
1:27 1:50 28.5dB 34dB |
Very high amplification and very good overall frequency response, but pretty low input impedance when used 1:50. Great transformers! |
|
| 5.4 kOhms | ||||||
|
|
Beyerdynamic
35553 |
|
37 Ohms |
1:15
23.5dB |
Great overall frequency response (-3dB at less than 10Hz) - very linear highs (20kHz: +1dB, 35kHz: -3dB) Great transformers! |
|
| 1.7 kOhms | ||||||
|
|
Beyerdynamic
35554 |
|
32 Ohms |
1:30
30dB |
Great bass frequency response (7Hz: - 3.5dB, 40Hz: -0.6dB, 100Hz: -0.15dB, 10kHz: -1,2dB, 20kHz: -4dB) and high amplification. Great transformers! |
|
| 5.3 kOhms | ||||||
|
|
Beyerdynamic
35665 |
|
58 Ohms |
1:15
23.5dB |
Great overall frequency response (-3dB at less than 10Hz) - very linear highs (20kHz: +0.5dB, 35kHz: -3dB) Great transformers! |
|
| 4.6 kOhms | ||||||
|
|
Beyerdynamic
35806 |
|
38 Ohms |
1:10
20dB |
Great bass frequency response (-3dB at less than 10Hz) - slightly rising highs (20kHz: +1.8dB, 30kHz: +6dB) = very nice! Great transformers! Click here! |
|
| 3.7 kOhms | ||||||
|
|
Dynacord
3553 |
|
50+50 Ohms |
1:10
20dB |
Very common transformer found in many Dynacord amps (as MV46 or Eminent). Good overall frequency response. Not bad at all... |
|
| 7.5 kOhms | ||||||
|
|
Unknown |
|
62 Ohms |
1:18
25dB |
Great overall frequency response. Excellent transformer.
I don't remember where I found that one. |
|
| 4.55 kOhms | ||||||
|
|
Unknown
V127 |
|
255 Ohms |
1:13
22.5dB |
Good bass frequency response (-1dB at 100Hz), but lacking highs (-6dB at 20kHz). Size: 1,3cm (dia.) x 1,2cm. |
|
| 4.8 kOhms | ||||||
|
|
Sennheiser
TB421 |
|
8+8 Ohms |
1:45
33dB |
Great working transformer. One of the best I know.
Size: 4,0cm (dia.) x 4,2cm. |
|
| 10.6 kOhms | ||||||
|
|
Sennheiser
TM003 |
|
178 Ohms |
1:15
22.5dB |
Pretty common, classic German transformer from one of our biggest brands. Great frequency response and sound. Also found with 1:30 ratio. Size: 2,1cm (dia.) x 2,7cm. |
|
| 3.8 kOhms | ||||||
|
|
Telefunken
42.5102.055-26 |
|
25 Ohms |
1:16
24dB |
Great working transformer. Perfect with lower impedance cartridges as SPUs or Tondose. Size: 2.5cm (dia.) x 2.5cm. |
|
| 6.5 kOhms | ||||||
|
|
Telefunken
8.506/647271 |
|
35 Ohms |
1:16
24dB |
Great working transformer. Perfect with lower impedance cartridges as SPUs or Tondose. Pretty similar to the above one Size: 2.5cm (dia.) x 2.5cm. |
|
| 5.9 kOhms | ||||||
|
|
Telefunken
42-0198.00-02.7 |
|
21.5 Ohms |
1:30
30dB |
One of the best (or the best?) with lower impedance cartridges as SPUs or Tondose. High Output and great frequency response. Stereo in one μ-metal can. |
|
| 2.15 kOhms | ||||||
|
|
Telefunken
41-5102.55-14.7 |
|
68 Ohms |
1:19
25.5 dB |
Great working xformer with great FR. Made by Haufe for Telefunken. Perfect for lower input impedance MCs (SPU), but also for higher impedances (DL103). Size: 2cm (dia.) x 2.2cm. |
|
| 10.7 kOhms | ||||||
|
|
Melodium
E 40 ES |
|
Ohms |
1:30
30dB |
This one comes from a big , French cinema amplifier. Great quality.
Size: about 5cm (dia.) x 3,5cm. |
|
| kOhms | ||||||
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