MIC HUM ? or XLR cable HUM ???

kamiahmed · 14th November 2009, 11:31 AM

Hey there...

my PC, mixer, monitors....none of these project any kind of HUM sound.

but when i plug in my MIC and turn on the phantom...there is a bassy HUM that does not allow me to use high gains. Its there even with the phantom OFF. Seems like it kicks in as soon i plug in the XLR to the port.

My effects pedal connected to other channel does not create HUM so iam sure my mixer is fine.

unfortunately i dont have an extra mic or cable to step troubleshoot this.

but just wanted to know...is this a generally experienced problem ???
whose the culprit ?? the MIC or the XLR cable ????

thanks.

Greener · 15th November 2009, 06:20 AM

What mic is it?

Is it a ground loop problem?

kamiahmed · 15th November 2009, 08:04 AM

its an AKG 4000

btw...i seperated the XLR as it was BADLY tangled with the other signal and power cables..that made a slight difference..

at times when i reconnect and re-activate the phantom....it goes away.

sounds familiar to anyone.

kamiahmed · 15th November 2009, 08:09 AM

also....this wierd thing has always happened..

with the mic plugged in...when i switch on the phantom...i hear this sort of RUMBLE/THUNDER/WINDY rolling sound as it powers up which goes away in few seconds....

its as if the sound of the phantom current reaching the mic to switch it on

anyone gets the same ???

my mic did this on both of my interfaces !

AlexK · 15th November 2009, 12:58 PM

Do you have another cable to try?

If the sound from the microphone is fine other than the humming, I would say it's the cable. I'd try changing that first...

14th November 2009, 11:31 AM	#1
kamiahmed Gear Head Join Date: Sep 2009 Posts: 60	MIC HUM ? or XLR cable HUM ??? Hey there... my PC, mixer, monitors....none of these project any kind of HUM sound. but when i plug in my MIC and turn on the phantom...there is a bassy HUM that does not allow me to use high gains. Its there even with the phantom OFF. Seems like it kicks in as soon i plug in the XLR to the port. My effects pedal connected to other channel does not create HUM so iam sure my mixer is fine. unfortunately i dont have an extra mic or cable to step troubleshoot this. but just wanted to know...is this a generally experienced problem ??? whose the culprit ?? the MIC or the XLR cable ???? thanks. __________________ KAM signing off And the best MONITOR award goes to..."EARS "

15th November 2009, 06:20 AM	#2
Greener Gear addict Join Date: Jun 2008 Posts: 441	What mic is it? Is it a ground loop problem? __________________ ılılıll \|̲̅̅●̲̅̅\|̲̅̅=̲̅̅\|̲̅̅●̲̅̅\| llılılı

15th November 2009, 08:04 AM	#3
kamiahmed Gear Head Join Date: Sep 2009 Posts: 60	its an AKG 4000 btw...i seperated the XLR as it was BADLY tangled with the other signal and power cables..that made a slight difference.. at times when i reconnect and re-activate the phantom....it goes away. sounds familiar to anyone. __________________ KAM signing off And the best MONITOR award goes to..."EARS "

15th November 2009, 08:09 AM	#4
kamiahmed Gear Head Join Date: Sep 2009 Posts: 60	also....this wierd thing has always happened.. with the mic plugged in...when i switch on the phantom...i hear this sort of RUMBLE/THUNDER/WINDY rolling sound as it powers up which goes away in few seconds.... its as if the sound of the phantom current reaching the mic to switch it on anyone gets the same ??? my mic did this on both of my interfaces ! __________________ KAM signing off And the best MONITOR award goes to..."EARS "

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15th November 2009, 12:58 PM	#5
AlexK Gear addict Join Date: Oct 2009 Location: Cardiff Posts: 412	Do you have another cable to try? If the sound from the microphone is fine other than the humming, I would say it's the cable. I'd try changing that first...

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