Zen-XA

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To be or not to be?

All I see is two seperate amps (Zen's with Aleph current sources).
To be an X I think the sources of the IRF9610's should be attached through a divider.( Or the power gain devices of each channel attached to ground through a resistor and the junction of the resistor and gain devices of both channels attached through another resistor)

Jam :magnify:
 
The one and only
Joined 2001
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Ah yes, you need for the current from the Sources of the
two stages to feed each other, and yours are going off to
ground.

No matter. This is easily fixed, and besides, it's a pretty
swell looking circuit already!


pass/ - not every amplifier has to be X
 
Hello,

Thanks for the response.

The Zen-XA, like it's name say, is a combination of an ZEN-4 and
an X-Aleph amplifiers.

The Zen-XA is not very true X design in the current configuration.
If we make an X design, than the circuit would have little common with
the ZEN-4, and we again will get some sort of regular Aleph or X-Aleph.
Also, as we already have an Aleph-X, there is no point to make another
one, and as Mr.Pass said - not every amplifier has to be X :)

I used no split rails because I already had the transformer with the
single 25 V seccondary at the hand.

I tested the circuit and it is working great with the Balanced Line Stage.
It is also very quiet, the speakers are dead quiet.
The driving a 4 Ohm load is easy.
It sounds really good, but I can't tell more as I builted only one channel.
It seems that the bass is little tighter than on regular Zen-4.
After warm up, the offset is stable and it is easily adjusted.



Best regards,
Kristijan Kljucaric
http://web.vip.hr/pcb-design.vip
 
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