Expected noise floors.

Lee Tyler · 27th December 2004

Just what db levels would I expect to see using a M-audio Delta 66 card, JOEMEEK VC3Q and a Marshall V67? With the way I have things generally setup, I am getting about a -62db ready to record......-75db with phantom power off....-90 db with nothing attached. Is this what would be expected in the realm of a home recording setup? Thanks in advance and Happy Holidays out there. ---Lee

Jay Kahrs · 29th December 2004

It could probably be better, probably be a lot worse too. Is the -62dBfs figure coming with the mic open in the room? If so that's about par for the course.

Lee Tyler · 29th December 2004

Quote:

Originally posted by Jay Kahrs
It could probably be better, probably be a lot worse too. Is the -62dBfs figure coming with the mic open in the room? If so that's about par for the course.

Thanks Jay for the "in the ballpark" assessment of my setup.!! ---Lee

Lee Tyler · 30th December 2004

Follow up: I performed some waveform analysis and noticed that a significant portion of the energy that was contributing to the -62 reading was the ole 60 cycle hum. I tried in vain to change power sources and tried to lift the ground. Somehow I isolated the noise coming from the VC3Q itself in the equalizer portion. I experimented with the EQ pots and discovered that when I turned the EQ pots down all the way, it reduced the ground hum MARKEDLY. So much so that I get a -12db or higher on a single mono vocal track with a -78db floor! That betters my previous effort by a whopping 16 DB! And the resultant vocals are clear, clean and nicely balanced......and of course I have the option of sweetening the tracks further in my DAW. And so it goes. Thanks for all the help. Much appreciated. ---Lee

27th December 2004	#1
Lee Tyler Gear nut Joined: Dec 2002 Location: S.W. Florida/Orig. N.Y.C Posts: 93 Thread Starter	Expected noise floors. Just what db levels would I expect to see using a M-audio Delta 66 card, JOEMEEK VC3Q and a Marshall V67? With the way I have things generally setup, I am getting about a -62db ready to record......-75db with phantom power off....-90 db with nothing attached. Is this what would be expected in the realm of a home recording setup? Thanks in advance and Happy Holidays out there. ---Lee

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30th December 2004	#4
Lee Tyler Gear nut Joined: Dec 2002 Location: S.W. Florida/Orig. N.Y.C Posts: 93 Thread Starter	Follow up: I performed some waveform analysis and noticed that a significant portion of the energy that was contributing to the -62 reading was the ole 60 cycle hum. I tried in vain to change power sources and tried to lift the ground. Somehow I isolated the noise coming from the VC3Q itself in the equalizer portion. I experimented with the EQ pots and discovered that when I turned the EQ pots down all the way, it reduced the ground hum MARKEDLY. So much so that I get a -12db or higher on a single mono vocal track with a -78db floor! That betters my previous effort by a whopping 16 DB! And the resultant vocals are clear, clean and nicely balanced......and of course I have the option of sweetening the tracks further in my DAW. And so it goes. Thanks for all the help. Much appreciated. ---Lee