Hello T!
In a message to Donald Quarles  T Owen wrote:
-=>> Quoting DONALD QUARLES to ALL <=-
DQ>> I have a mackie mixing board 16 channel being run in stereo and
DQ>> also a stereo graphic E.Q. and a processer and Bose in the
DQ>> ceiling speakers and a 1000 watt per channel power amp and also
DQ>> for the motiores i use a pevey head 300 watts per channel. what
DQ>> the problem is when i turn the thing up i get a low freg. hum and
DQ>> can not fiqure it out when no one is using the system is hum
DQ>> likes a boat motor off in a distance..
TO> Sounds like a ground loop to me. Is everything plugged into 
TO> the same leg of AC power? Are you running long unbalanced 
TO> lines? Are signal cables (esp. unbalanced) running paralell 
TO> to AC feeds? Tell me how things are wired up, and I may have 
TO> some ideas. Take care. 
well thank you first for replying to me. This is in our church
we have had this hum since i have been there we havbe a 100'
snake runnign from the back of the building to the stage on the
stage we have 16 plugs all sheilded and grounded the snake is ran
through the ceiling in a plasitic pipe. then as they come to the
back they go into the sound room and hook up to the XLR plugs on
the mackie now for the monitors we have a cable coax running
about 65 foot coming from the stage which has two peveay's
montiors and then through the 65 foot line and into the peavey
montior head. and in the sound romm we have a E.Q, Power bass
amp. and effects machine for speakers they have insatlled the
bose with the sub woofer system.. that is it in the nut shell and
kind of help would be apperacited.
Donald Quarles A.K.A BAD
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