How to go from RCA to XLR?


I've got an Aragon Stage One processor with RCA outputs and two Aragon Palladium 1K monoblocks with XLR inputs. I know there are a lot of RCA-XLR cables available, but a fabricator told me you have to know which XLR pins are "hot" and these have to match the amps' input circuitry or you will damage the amp.
So how do you know which pins to make hot when you order the cables? When you buy these cables "off the shelf" are you just hoping you get lucky and they match up with your equipment?
Thanks
Ag insider logo xs@2xnoslop
See pages 28 and 29 of the following paper for a description of how to feed a single-ended signal into a balanced input without major degradion of noise performance. My thanks to Shadorne for calling this paper to my attention.

http://www.jensen-transformers.com/an/generic%20seminar.pdf

Regards,
-- Al
My thanks to Shadorne for calling this paper to my
attention.

You're welcome - Bill Whitlock used to work at Capitol Records - he is a member
of IEEE and AES. What he says is obviously designed to help raise awareness and
promote Jensen products but he shoots straight! I would not hesitate to use his
products.

Sounds like you need a single ended to balanced transformer like the Jensen model.
Rww -- I get your drift; touche! :)

But the op should note in the reference that he can get a great deal of noise rejection just with the cabling arrangement that Whitlock describes (his diagram labelled "correct" on page 29), without the expense and possible sonic signature of a transformer.

And as I indicated earlier, even if he just uses the adapter as originally envisioned (Whitlock's diagram labelled "wrong" on page 29), he would have noise performance comparable to a fully single-ended arrangement, which may prove to be satisfactory anyway.

Regards,
-- Al