ricardo007
Member
Hello
I have a snaps modified into snap2.
And a nac 42 preamp which i would .like to transform into a 42.5 so that i can take advantage of the dual supply rails feature of the snaps2.
Question 1
What does each rail supply power to?
Inside the 42 you have 4 circuits :
1- the relay common to both channels
2- the phono cards
3- the gain circuit
4- the buffer stage
So rail 1 would supply phono stà ge plus buffer stage?
And rail 2 would supply gain stage and relay?
What is the advantage of this?
Question 2
How to realize this? I see that the 42.5 has a different main PCB with a different layout but schematics seem to be the same. There is a chassis 5 pin connector on the 42.5 to accomodate the extra rail instead of the 4 pin connector on the 42 but what has to be done inside in terms of wiring and grounding
Question 3
After the mods should settings be changed?
Need help to go forward
Thanks
Richard
I have a snaps modified into snap2.
And a nac 42 preamp which i would .like to transform into a 42.5 so that i can take advantage of the dual supply rails feature of the snaps2.
Question 1
What does each rail supply power to?
Inside the 42 you have 4 circuits :
1- the relay common to both channels
2- the phono cards
3- the gain circuit
4- the buffer stage
So rail 1 would supply phono stà ge plus buffer stage?
And rail 2 would supply gain stage and relay?
What is the advantage of this?
Question 2
How to realize this? I see that the 42.5 has a different main PCB with a different layout but schematics seem to be the same. There is a chassis 5 pin connector on the 42.5 to accomodate the extra rail instead of the 4 pin connector on the 42 but what has to be done inside in terms of wiring and grounding
Question 3
After the mods should settings be changed?
Need help to go forward
Thanks
Richard