Hi!
My friend Cucu built the Aleph X and he is very satisfied with the sound. (Thanks for Mr. Pass and Grey Rollins!!!)
Now he would like to build a preamp with very low output imp and more precise sound then the Aleph preamps with no negative feedback has.
He thought on the Aleph Ono phase shifter circuit as starting point.
His question: need he change anything in the attached schematic?
Greets:
Tyimo and Cucu
My friend Cucu built the Aleph X and he is very satisfied with the sound. (Thanks for Mr. Pass and Grey Rollins!!!)
Now he would like to build a preamp with very low output imp and more precise sound then the Aleph preamps with no negative feedback has.
He thought on the Aleph Ono phase shifter circuit as starting point.
His question: need he change anything in the attached schematic?
Greets:
Tyimo and Cucu
Attachments
Further thoughts: having an output stage allows you to use proper FETs for the input pair; all 3 current sources can share the same refence voltage for simplicity.
If you now draw the circuit, guess what's it gonna look like
My interest in this discussion is similar to your friend's: recently bulit a P 1.7 and doesn't look like i can live with it - too rich on the whipped cream and sugar. My first idea was to rebulid it similar to the X2, with a negative supply and at least get rid of one of those wretched caps but keep the ccs loads.
If you now draw the circuit, guess what's it gonna look like
My interest in this discussion is similar to your friend's: recently bulit a P 1.7 and doesn't look like i can live with it - too rich on the whipped cream and sugar. My first idea was to rebulid it similar to the X2, with a negative supply and at least get rid of one of those wretched caps but keep the ccs loads.
Hi!
Sorry for the late reply, but yesterday I couldn't get into the forum
because of some DIYaudio Server problem.
Greets:
Tyimo and Cucu
Sorry for the late reply, but yesterday I couldn't get into the forum
because of some DIYaudio Server problem.
He thought it is part of the feedback and need for the gain adjusting.
With input pot.
He would like to use feedback.
Maybe it not necessary, but the ONO has this caps and in the ONO there is negative feedback too.
Greets:
Tyimo and Cucu
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.