Transformer type Low pass filter

[knivies]

I am currently using NOS 1541A DAC with tube LPF output. Any idea if I can replace it with output transformer ?


Thanks for sharing.

[knivies]

Or is it possible to use Jensen 123ALCF to replace I/V conversion circuit ?

[FibCouple]

Originally posted by knivies
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.

Tube DAC

6922 transformer coupled

Originally posted by knivies


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

[knivies]

Hi Fib,


Many thanks for the info. it's very helpful. BTW., I did finally ended up with using Sowter 8347 transformer, it's a wonderful and budget choice for me.

Sowter 8347 transformer


Happy listening.


Cheers !!