24.12.2018, 15:49
Hey Peter
Thank you for your advice !
I adjusted the azimuth with the oscillopscope. Now, the sound is "perfect", even treble (highs), at 38 cm/s and at 19 cm/s also.
Then I tried to adjust the highs (Hohen I) with a calibration tape.
Again, I couldn't get enough "highs": at 10Khz /-20 db I measured a deviation of more than 18 db (18 db less output than the signal on the calibration tape).
Could be a worn playback head? If this should be the verdict, do you have any advice on a replacement head: e.g. Telefunken WB02 or other? There is a headstack M5 on ebay, but looking at the pictures, the playback is also pretty worn I think: https://www.ebay.com/itm/Telefunken-M5-M...rk:28:pf:0
Evert
Thank you for your advice !
I adjusted the azimuth with the oscillopscope. Now, the sound is "perfect", even treble (highs), at 38 cm/s and at 19 cm/s also.
Then I tried to adjust the highs (Hohen I) with a calibration tape.
Again, I couldn't get enough "highs": at 10Khz /-20 db I measured a deviation of more than 18 db (18 db less output than the signal on the calibration tape).
Could be a worn playback head? If this should be the verdict, do you have any advice on a replacement head: e.g. Telefunken WB02 or other? There is a headstack M5 on ebay, but looking at the pictures, the playback is also pretty worn I think: https://www.ebay.com/itm/Telefunken-M5-M...rk:28:pf:0
Evert
