The Singing Bush Tips 'n' Tricks

[Zen Mod]

'Talians are in soffrendo, by nature

 

[sontero]

this is schematic of my preamp.
it is not floating
but I can certainly try to use my Lightspeed (passive)

 

[sontero]

ZenMod
I don't want to bore you and others who read anymore.
I will make my attempts and if I solve it you will certainly know.
Thanks for everything

 

[Zen Mod]

no better purpose of this thread than to help with complications

do what you can think of, write results here so we can think together

 

[sontero]

I will do it'
and anyway thanks again for giving us this wonderful amplifier

 

[Zen Mod]

https://www.diyaudio.com/community/threads/blame-pa.378998/

 

[sontero]

a little update
I connected the ground breakers on the PSU cards to the chassis obtaining a noticeable but still audible noise reduction.
next step try the simple self-built Lightspeed passive preamp (unbuffered).
Then intervene on the preamp and fix the ground.
The significant noise reduction along with the prolonged operation allowed me to better appreciate the enormous quality of the SB.
It is only possible to be enchanted by its superior beauty. Marvelous. More than beautiful.

 

[codyt]

It is only possible to be enchanted by its superior beauty. Marvelous. More than beautiful.

Agreed 🙂

 

[Zen Mod]

 

[sontero]

update
using only Lightspeed the noise is completely gone ... but I miss my damn tube

 

[Zen Mod]

 

[sontero]

that preamp has to come back .... I'll find a way

 

[Zen Mod]

if you think that we can help, post pics and what of details you have

 

[sontero]

Thanks ZenMod ... I don't think it's useful. I have to arm myself with patience and do tests on the GND of the pre to silence it.
In the meantime, I enjoy the Singing Bush and am happy
Thank you so much for the solidarity

 

[Zen Mod]

naah

 

[sontero]

ok ... you want to suffer

Ecce Homo

 

[Zen Mod]

first thing, twisted output pair of wires

looking at channel, everything really needs to be grounded in one point, most easily illustrated as - ditto under cathode LED string

 

[sontero]

are you suggesting the Star Ground ..... it could work ... who knows
Thank you
Giovanni

 

[Zen Mod]

read this, it's good, at least by memory

didn't re-check it now

http://www5.big.or.jp/~dh/sp/DHWS_5.html

 

[sontero]

well
I did my homework
Mr. Master, do you promote me?
all mass returns in one place.
I haven't had time to try .... I'm tired and sleepy
try tomorrow ..... if you don't fail me first