Topic: Wiring Countryman B3's to mini xlr's - paging illconditioned

[darktrain]

I am wiring up a set of these for someone and just wanted to double check. i was searching the forum and found a few references to wiring the B3's  to a single miniplug but no reference to wiring them to mini xlrs. Obviously the ground would be pin 1, now would the red go to pin 2 and black to pin 3 or are they like the at853's where when they are wired 3 wire the red wire is pin 3 and the yellow(signal) is pin 2 but when put on the miniplug the yellow is grounded and the red is the signal, does that make sense.

[ArchivalAudio]

I'm not sure but I think many (or at least the pig tail version) of the B3's are 2 wire systems
but can also be ordered for mini XLR termination - I think?

some one else may have more info
paging Richard!

[darktrain]

Ok if they arrive 2 wire would i bridge the 1 and 3 pin on the mini xlr?

[ArchivalAudio]

that sounds reasonable
but Richard aka illconditioned would know better than anyone
hopefully he will reply here soon.

[darktrain]

Bump

[darktrain]

So after wiring these up(they are the 3 wire version) we are having a lack of bass response. I wired them pin 1- shield, pin 2- red, pin 3- black to the mini xlr's. I have looked through the forums but there are only references to wiring them to miniplug. Do i need to put a resistor in there or maybe switch the red and black wires? I am also asking because i don't have any gear around to "test" the sound once wired.

[illconditioned]

Yes, try swapping the wire.  Pin 3 on AT is usually power (+5V or so).  Pin 2 is audio output, Pin 1 is ground.

  RIchard

[darktrain]

thanks guys, so you see no reason for any resistor's on these. These are being powered by a tinybox by the way Jon. And according to the countryman website the red is the signal and lots of the wiring options have a resistor in there.

[illconditioned]

Try a 4.7k resistor.

[darktrain]

Try a 4.7k resistor.

Across 1 and 3 pin and leaving red as 2?

[illconditioned]

Try a 4.7k resistor.

Across 1 and 3 pin and leaving red as 2?

Red to pin 3,
Black to pin 2,
Shield to pin 1.
The 4.7k resistor between pins 2 and 1.

[darktrain]

Try a 4.7k resistor.

Across 1 and 3 pin and leaving red as 2?

Red to pin 3,
Black to pin 2,
Shield to pin 1.
The 4.7k resistor between pins 2 and 1.

Thanks Richard, thats pretty much how the AT's wire up with resistors as well, also do you think a 2.2k resistor would be fine?

[illconditioned]

If you've got enough voltage (5v or more), I think 4.7k is better (less distortion).
If you're running on lower voltage (2-3v from plug in power) then 2.2k or even 2.0k is a better bet.

Note: I've had distortion with a 2.0k resistor, very loud show.  PA is likely overpowered for the room it is in.  But this is only once in many different situations.

  Richard

[darktrain]

Don't add the resistor in this case, the customer's tinybox already has DC termination on the signal pin 

ok so i wil ljust swap wires then