XLR 4 pin (male) to 2.5mm (female) DIY adaptor, how hard it would be?

igorpadrao

Member
2020-01-23 6:47 pm
Hello people

I am thinking in build on the cheap a XLR 4 pin (male) to 2.5mm (female) DIY adaptor but I never done something similar and don´t know if it would be difficult or not.

The parts that I am thinking in using:

XLR 4 pin male connector
Neutrik NC4MXX B XLR 4pin Cable Connector,Mic/Camera Audio Connector,4pin XLR Male Connector-in Connectors from Lights & Lighting on AliExpress

2.5mm 4 pole female jack
4Pcs Upgraded 2.5mm 4 Pole Stereo Female Jack 2.5 Audio Plug for Headphone Earphone Soldering DIY Mini Connector-in Connectors from Lights & Lighting on AliExpress

Anyone has any diagram to where to sold the wires? Any tips or experiences to share?
 
I am trying to do a adapter for my Loxjie P20 so I could use 2.5mm balanced headphones to it.

An other question, is it possible to do a XLR4pin to 3.5mm TRS (unbalanced) so I could use single ended headphones in the balanced output of this little amp?

No, you could damage the balanced outputs.
You can go from an unbalanced output to balanced headphone, but NOT from balanced output to unbalanced headphones.
You would have to rewire you headphones to be balanced.

2.5mm jacks are pretty small, it takes some care to get a reliable solder joint to them. I'd make sure to do something to get strain relief on the wires after you make sure it works. Could be simple like adding glue into the connector shell. Want to make sure you don't keep stressing the solder joint. I don't see any provisions for strain relief in the connector link.

Randy
 

igorpadrao

Member
2020-01-23 6:47 pm
No, you could damage the balanced outputs.
You can go from an unbalanced output to balanced headphone, but NOT from balanced output to unbalanced headphones.
You would have to rewire you headphones to be balanced.
Thanks for the warning, man. But I saw people do it with adaptors. Like these in the Aliexpress:
HIFI Male 4 Pin XLR Balance to 3.5mm 2.5mm 6.35mm 4.4mm Female Audio Cable DAC Stage 4 Core XLR Headphone Adapter Cable on AliExpress

Free Shipping Haldane 10cm 2.5mm TRRS Balanced Male to 3.5mm Stereo Female Earphone Audio Adapter Cable-in Earphone Accessories from Consumer Electronics on AliExpress


U98e69a80b0c74ccba576b3abc8abc728K.jpg



A photo from a customer.

Find out how the two connections from the pre-amp are done since is has both. Separate circuits ? Resistor mixing ? Replicate it on the adapters.


I do not know how to verify this. It is possible just by looking to a picture of the internals?

LOXJIE-P20-Full-Balance-Tube-Headphone-Power-Amplifier-Use-the-Military-Grade-6N3-Tube-Powerful-Hi.jpg_q50.jpg