🚀 go-pugleaf

In article <CAFD5v.8t3@xstor.com> tompelli@xstor.com (Tom Pellicer) writes:
>Help...
>
>I have a friend who has let me borrow his Neuman U87 microphone so that
>I could record some vocal tracks.  My board does not supply phantom 
>power, so I borrowed (from another friend) an AKG phantom power unit
>which plugs directly into 120 AC.

Make sure it's a 48V (not a 12V) phantom supply.  The U87 needs the 
juice, as I recall.

>My problem is occasionally the mike level will just drop out for
>a few seconds and then come right back up - almost like someone pulled
>the vocal fader down and up real quick.  I tried a number of different
>channels on my board and it seems to happen on all of them.  I made
>sure that the U87 was switched to the external power, as well.  I also
>tried both jacks on the AKG power unit.

Sounds like something is intermittent.  Could be the connector in the
mic, could be the power supply itself (before the voltage is split out
to the teo connectors), or it could be a microphone cable.  Whatever
it is, you likely have a loose connection somewhere.

>I don't own another mike that requires phantom power, and I don't
>have another phantom power unit.  Any suggestions?  Please tell me it
>is not the mike.

I can't tell you that.  But microphone cables are more inclined to fail
than microphones.  The easy, unscientific test is to start wiggling
things until you find the connector that's bad.

--
     Gabe Wiener -- gmw1@columbia.edu -- N2GPZ -- PGP on request
 Sound engineering, recording, and digital mastering for classical music
   "I am terrified at the thought that so much hideous and bad music
	 will be put on records forever."  --Sir Arthur Sullivan