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Gear / Technical Help => Microphones & Setup => Topic started by: earmonger on December 19, 2013, 12:57:15 PM

Title: A sudden case of ground hum
Post by: earmonger on December 19, 2013, 12:57:15 PM

This is probably beyond elementary to the electronics experts here but:

I heard a sustained tone in my latest recording with a pair of mics I have been using forever--an ancient Church Audio model with Primo capsules if I remember correctly. Tested the mics and sure enough it's from them: a hmmmmmm from the left mic and a HMMMMMMMMMMMMM from the right, especially if I touch it.  Steady and sustained, probably 60hz. 

It's not in the mic jack, line-in or battery box, thank goodness.

Would this be the capsules announcing their retirement? (If so, they deserve a gold watch and a pension for faithful service.)

Or would it be in the plug? Is it worthwhile to get that rewired?

Thanks for any advice.

Title: Re: A sudden case of ground hum
Post by: Church-Audio on December 19, 2013, 01:11:11 PM

Quote from: earmonger on December 19, 2013, 12:57:15 PM

This is probably beyond elementary to the electronics experts here but:

I heard a sustained tone in my latest recording with a pair of mics I have been using forever--an ancient Church Audio model with Primo capsules if I remember correctly. Tested the mics and sure enough it's from them: a hmmmmmm from the left mic and a HMMMMMMMMMMMMM from the right, especially if I touch it.  Steady and sustained, probably 60hz. 

It's not in the mic jack, line-in or battery box, thank goodness.

Would this be the capsules announcing their retirement? (If so, they deserve a gold watch and a pension for faithful service.)

Or would it be in the plug? Is it worthwhile to get that rewired?

Thanks for any advice.

Time for a recable. I am not sure what mics you have I only use primo capsules in one mic that was the b99 or pro binaural mic or ca-10 as its now known :)
Email me a picture and I will help you out with the issue.
My email is in my sig.
Chris Church