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Old 17th January 2009, 09:44 PM   #51
Nelson Pass is offline Nelson Pass  United States
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PassLabs Aleph 4.0
Originally posted by elac310
I'm not sure tantalum capacitors are the best choice; as far as I know, this type is largely considered to be the worst in any type of decent audio equipment
That is certainly true for anything carrying audio signal, but the cap
across the Zener is just filtering the noise from the Zener, so it's
pretty harmless there. You can dispense with it altogether if you like.

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Old 18th January 2009, 07:26 AM   #52
t_majerovic is offline t_majerovic  Slovakia
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I appreciate that you visited my thread. Thank you...maybe I leave tantalum capacitor on place. After some tests I'm unable hear any difference between used 2.2uF tantalum capacitor and MKP capacitor with same capacity (I'm talking about capacitor attached across zenner diode in current source).

Regarding rectifier diodes. Do you have any favorite Schottky diode type (or another type) to rectifiers (something suitable for Aleph 4.0)?

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Old 27th January 2009, 09:00 PM   #53
t_majerovic is offline t_majerovic  Slovakia
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Cool Rectifier diodes, capacitors... arrived

Rectifier diodes arrived

Few days ago I ordered 16 rectifier diodes (IXYS SEMICONDUCTOR DSA70C100HB), Panasonic bipolar capacitors and some WIMA capacitors from Farnell. My package already arrived. I'm ready to rebuild rectifiers in my Aleph and replace electrolytic capacitors (low ESR) in audio path by bipolar Panasonic capacitors . I'm curious about sound improvements and keep you informed...

By the way, I began to build preamplifier. Here are some pictures:

I'll open related thread once I have more pictures and 1st version of my control/display board.
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