Are there any adverse problems arrising from using DMX cable for audio cable? This is the 3 pin XLR connector. Want to use the cable from microphone to mixer. I believe the DMX cable is 120 ohms impedence and the audio cable is supposed to be 72 ohms impedence. Will the audio be degraded signifigantly? Have not tried it yet, wanted some advise first.
Thanks,
Neal
Forgot to mention the distance is 100 ft. It's just picking up audio above stage area for a play, as long as we get something decent, it should be ok.
Is 100 ft. too long?
The DMX standard is intended to be like a RS-485 multi-drop bus to control theater equipment. I believe these cables are UTP ( Unshielded Twisted pair ) and as such, I do not think they would do well in a noisy audio environment. Lots of hum I would guess. https://www.electro-tech-online.com/custompdfs/2008/06/DMX-512.pdf
Will be not able to test til tomorrow at facility, however am hopeful it should be ok. I now think the new DMX cables will be ok for audio. However, I believe the old standard single shielded audio cable may be too noisey for DMX controller aplications. Will post results after I can test it out tomorrow night.
If it's shielded you're probably fine. If you get a lot of 60hz hum try cutting the shield grounds at the mic and keeping them separate. The shields only need to be saftey grounded at the mixer/amp they'll ground out anything the 100ft of wire picks up.
Are there any adverse problems arrising from using DMX cable for audio cable? This is the 3 pin XLR connector. Want to use the cable from microphone to mixer. I believe the DMX cable is 120 ohms impedence and the audio cable is supposed to be 72 ohms impedence. Will the audio be degraded signifigantly? Have not tried it yet, wanted some advise first.
Thanks,
Neal
You've obviously not done PA or recording, the low impedance and balancing of the mikes allows long cables with minimum loss. Using high impedance mikes means you can only have short leads, otherwise you get HF loss, due to the impedance of the mike and the capacitance of the cable forming a low-pass filter.