Coytee Posted August 20, 2010 Share Posted August 20, 2010 I'm looking at a publication by Crown. It's in paper form in my hands or else I'd post it here. I'm trying to find it again and have posted a question to Crown to attempt to do so. It shows various ways to wire XLR wires, depending on how things are wired. Example: Balanced, grounded source... "for use with components equipped with three-wire grounded AC line cord or other ground connection" This diagram then shows the output from source XLR being wired "1,2,3" but, the input to the amplifier end of the cord is wired "2,3" and pin 1 wire is "shield not connected at this end". I don't know if that means this wire is totally disconnected or perhaps, attached to the sheathing since the diagram shows it to be circular as though it's wrapped around the other two wires, as contrasted with snipped and simply truncated prior to reaching the terminal end point. Example 2: Balanced, floating source..."for use with components equipped with two-wire AC line cord or battery power" This diagram is more straight forth than the prior one in that the three wires from the "output from source" are wired 1,2,3 and the input to amplifier side is also wired '1,2,3' so it's simply a straight through wire. Ok, that's the setup without pictures, sorry...I'll post them if I can get them. Here's my question.... is this the "Pin #1 problem" that I've heard about before? Suggesting that sometimes you might need to alter how these are connected depending on having a grounded verses a floating source? What constitutes the source? If EVER SINGLE of my components has a 3 prong wire then I presume I can conclude that I have a grounded source. What if however, my preamp has 3-prong (Peach) but my CD player is only two prong? Do I then have a grounded or floating source? What if my preamp and 2-prong cd player are plugged into a 3-prong power strip so they use a ground prong on the plug side of the strip but, they are not grounded to the strip? What if I change preamps and insert my Lexicon preamp which is a 2-prong? Or.... is this only concerned with the immediate item PRIOR to the power amp, in my case, the Dx38 which has 3 prongs? How far up the food chain does one need to worry about? Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.