how can I find the polarity out from my XLR

Try changing your speaker cable connections at the amp. Move the (+) to the (-) and vice versa.

If the sound improves substantially, then your XLR connections (or some other connection) are reversed polarity.

> Ivany
hi,
my only problem is that I have to give to my 'DIY cableman' the right polarity out of my CD player to match with the polarity 'In' in my preamp
I know the polarity In of my Preamp (1,2,3 pin are ok it's an US Cello Encore)
but I've a doubt about (+) pin out of my CDP ( I'm not sure (+) is out of pin 3 it's an european Sony player)

Disregard my post, because I mis-read your question. I thought that it said your polarity was different from the CD player to the preamp. Sorry.

> Twl
What I'm sure is that I don't know what is going out of my CDP ;-)

my user manual of my CDP says connectors are :
1=ground
2=(+)
3=(-)
and back of my CDP connectors are explained :
1=ground
2=(-)
3=(+)

so I need to check wher is my (HOT) pin

do u understand what I mean?

sorry for my english I'm a poor frenchie guy

Have you contacted the manufacturer? 9 out of 10 times, they mis-print the manual.