knivies said:I am currently using NOS 1541A DAC with tube LPF output. Any idea if I can replace it with output transformer ?
Thanks for sharing.
If you are trying to replace the whole tube output stage with a transformer, then look at this link.
http://www.audiodesignguide.com/DAC_final/DacFinal.html
However, reading most people's impressions, tube stage appears to be preferred over the transformers-only stage, with more dynamics, bass etc. I have no first hand experience of comparison though.
If you are looking to replace the coupling capacitor AFTER the tube stage then look here for output transformer coupling:
http://www.audiodesignguide.com/DacEnd/index.html
Also, two other active threads have similar exchange presently underway.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=120669
http://www.diyaudio.com/forums/showthread.php?s=&threadid=120955
knivies said:
Or is it possible to use Jensen 123ALCF to replace I/V conversion circuit ?
I have replaced my 82 ohm i/v resistor with a 22 ohm resistor on the primary of a Lundahl 7905 in 1:5.6, with astounding results in my TDA1541A dac & can recommend this transformer heavily.
I used 7905 as it has a large core. I was concerned that the small amount of DC at TDA1541A's output may saturate a smaller tranny. As per Mr Lundahl, 7905 fits the bill if that is a concern. Although I couldnt tell you for sure if smaller transformer would do any different.
Best regards
Fib
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