Audio Cable question

[looper2345]

I'm installing some amcrest microphones (AM-HAP200) for my wired security camera system and I'm debating the best way to run the audio cables.

I need 100ft runs, and the microphones have RCA connections. I already have the video+power cables.

Pre-built 100ft shielded RCA cables are kinda spendy and I was wondering if I can just pop some BNC to RCA connectors on an RG59 coax cable instead...without any severe degradation to the signal?

 

[DsineR]

Search for audio CAT baluns, should be able to find dual RCA over single CAT cable easily.
Easier & cheaper to install vs. shielded audio & coax.

 

[looper2345]

I appreciate the response! Cat5 is about the same price as RG59, so I don't see how it's cheaper to run a balun.

 

[sebastiantombs]

If you want to maintain proper impedance for the microphone and audio system, which will effect fidelity potentially quite a bit, a balun or other method of impedance matching would be required for coax as well. RG59 has a nominal impedance of 75 ohms while audio, line inputs, are normally in the 600 ohm range.