input connection and ground on ucd 180

[bcrazy]

I am in the process of putting together my first amp.

How should i connect power ground and signal ground?

I planned on not connection power ground to chassis, is there any reason not to?

I use unbalanced rca inputs. What/where should i connect neg input and ground on the ucd modules?

Can i leave the ground pin on the ucd unconnected???

Should i keep the power ground (O volt) from the rectifers floating or do i need to connect it to chassis?

I use a 2x33V trafo with no 0 Volt line and 2 bridge rectifiers.

Advice needed.

some pictures:

 

[bcrazy]

just need to show off this great tool

 

[guyv]

Use double insulation transfo and parts and distances. Neg input and ground to the chassis. Floating PS, floating AC ground.

http://www.diyaudio.com/forums/showthread.php?s=&postid=767515&highlight=#post767515

http://www.diyaudio.com/forums/showthread.php?s=&postid=736222&highlight=#post736222

http://www.diyaudio.com/forums/showthread.php?s=&postid=673418&highlight=#post673418

You can do a search for putzeys (partial name) and RCA.

Alternative is to use the standard grounded box, but I don't have links to offer for that.

Guy