XLR connections

[la toilette]

Recently bought a pair of Rogers LS5/9's, and they've got xlr connections on them - so just bought some female xlr's from Maplin. Having had a quick look on the web it seems that pin 2(+) and 3(-) are the ones to connect my speaker cables to, but I wanted to check with those who know before I do it....

Presumably pin 1 (ground) is left unconnected...?

 

[themadhippy]

pin 1 earth, 2+, 3-, is the standard for low level signals,speakers can use any combination of the pins depending on the manufacturer,although 1 and 2 is the most common.you could use a 1.5v battery and briefly try each combination of terminals.once you've identified the 2 terminals check weather the cone moves in or out ,if it moves in the battery is + is connected to the speaker - if it moves out battery + is to speaker +

 

[la toilette]

Ah of course, the battery test, good thinking! Why didn't I think of that?

Cheers!

 

[karlinamillion]

Are these ex-BBC speakers, they may be wired for Bi-amping if they are. Open them out & have a look.

 

[flatpopely]

And the other thing is that the BBC used XRL not XLR (pin 1 2 3) wiring IIRC.

 

[themadhippy]

the BBC used XRL not XLR

And what is an xrl ? cannon rubber locking instead of cannon locking rubber?

 

[flatpopely]

And what is an xrl ? cannon rubber locking instead of cannon locking rubber?

If only!

X = GND
L = Live
R = Return

most people use:-

X = Pin 1
L = Pin 2
R = Pin 3

IIRC BBC swap L and R (hot and cold)

 

[themadhippy]

The beeb aint the only ones to swap hot and cold (2+3) around,the americans also had a habit for doing it .However the term xlr has nothing to do with the wiring convention,general consensus is its a military stores code,X for cannon,L for locking/latching ad R for rubberised

 

[flatpopely]

The beeb aint the only ones to swap hot and cold (2+3) around,the americans also had a habit for doing it .However the term xlr has nothing to do with the wiring convention,general consensus is its a military stores code,X for cannon,L for locking/latching ad R for rubberised

Thats news to me. Where does the rubberised bit come from?