Sound Skulptor forums

Build help and troubleshooting => AB528 Microphone preamplifier => Topic started by: UrbanOsterman on February 28, 2025, 04:26:42 PM

Title: Mic Noise?
Post by: UrbanOsterman on February 28, 2025, 04:26:42 PM

A funny thing happend !!!

I inserted an SM58 into my AB528 Mic Preamp.
And I noticed very little background noise??

Then I realised that I had the Phantom power turned on, so I switched it off.
Then I noticed the background noise went back to normal??
The mic sounded ok both ways. No different sound??

How come it is a lot lower background noise when the
phantom power is turned on, on a mic like SM58?

/Urban

Title: Re: Mic Noise?
Post by: JPK on February 28, 2025, 06:23:01 PM

Hard to believe :o
Is it reproducible?