Les Paul Personal................

[Highlander]

An olive branch for 'er indoors...

Don't forget to run before unpackaging...

[Grog]

Maybe it was too fra-gee-lay for her. 

She has reminded me on more than one occasion what happened to the one in the movie................
I'm glad she puts up with me!!

[Grog]

Here are a few photos of the herd..........


And the 1970 Gibson Les Paul Brochure.....(even though the Custom is a couple years newer.....).

[Dave W]

Les would be proud. 

[Highlander]

+1

[Granny Gremlin]

Beautiful 

[Grog]

Les would be proud. 
[/quote]

Or have me commited........................ 

[Highlander]

... only if they became wall-hangers and ne'er got used...

[Basvarken]

Impressive!

I'm officially jealous now ;-)

[Hörnisse]

Beautiful collection. 

[Grog]

Shortly after I bought the Les Paul Personal, about a year ago, I loosened the XLR jack for the microphone to see how it was wired. Pin (3) was positive & pins (1) (2) & (G) were all wired together as the negative connection. I changed my modified unbalanced chord the same way & it seems to work better & quieter to me. I use this chord to plug directly into my P.A. & I have an eighty's Peavey KB300 with a low impedance microphone jack  in one channel that works well with the low impedance Les Pauls. I would sometimes pickup a strong local radio station, (WCCO), or other noise. It seems to be gone as of now! Anybody else have any thoughts on this? 

[Pilgrim]

I've never heard of wiring an XLR connector as you describe, and it sounds like it's not grounded properly. XLR cables should not pick up RF signals like the one you describe.

If you have an impedance mismatch between the mic and the amp, I'd suggest putting an impedance changing device like an ART TUbe MP in the cable path, not modifying a cable.

Standard XLR wiring....

Balanced: 

Unbalanced:

[Grog]

I've never seen anything like it either........... Here is a photo, but you cant see all of the wires........

The two schematics you posted didn't come across on my computer for some reason................

[Granny Gremlin]

Back in the 60s, when XLR jacks where still called Cannon jacks, the standard was pin 3 hot (not 2) pin 1 ground (just like now) and pin 3 cold.  Since the XLR jack is wired for unbalanced use, what Grog describes is is correct for the time.

Normally vintage wired XLRs can be used as is with modern gear as long as you are not concernned with it causing a 180 degree phase shift (or if a devise in the signal chain has a polarity reverse switch).  Otherwise, or in such an unbalanced case as this, it would be best to reverse the wiring so that pin 2 is hot and pins 1, 3 and chassis ground tied together.... or as Grog did, reverse wire a cable so that the input device (amp or PA mixer) is not seeing pin 2 (tip on the 1/4" jack), tied to ground at the guitar, which would totally explain the noise.