franklinh
Well-known member
All,
I need your help in identifying a sound - the file is here:
http://twin-x.com/groupdiy/displayimage.php?pos=-1853
I've heard it from a few different sources, the one in the file is from an Electrodyne 1604 with all of the channels bussed (max gain at the summing amps).
I've also heard it on the output of a transformer coupled mic preamp, but only when it was powered off. It did not change what I was hearing if the power mains were plugged in or not. (secondary acting as a pickup coil?)
The problem seems to reside at the location, that is when I bring offending pieces of gear to my shop they no longer pick up this sound, powered up or not. It has varied slightly with time of day, but not to the degree of ever disappearing completely.
I really hope someone here has heard this sound before and can point me in the right direction - I have my suspicions about the source (pole pig perhaps?) but without knowing exactly what I'm up against it's difficult to have a plan of attack.
Thanks in advance.
Frank
I need your help in identifying a sound - the file is here:
http://twin-x.com/groupdiy/displayimage.php?pos=-1853
I've heard it from a few different sources, the one in the file is from an Electrodyne 1604 with all of the channels bussed (max gain at the summing amps).
I've also heard it on the output of a transformer coupled mic preamp, but only when it was powered off. It did not change what I was hearing if the power mains were plugged in or not. (secondary acting as a pickup coil?)
The problem seems to reside at the location, that is when I bring offending pieces of gear to my shop they no longer pick up this sound, powered up or not. It has varied slightly with time of day, but not to the degree of ever disappearing completely.
I really hope someone here has heard this sound before and can point me in the right direction - I have my suspicions about the source (pole pig perhaps?) but without knowing exactly what I'm up against it's difficult to have a plan of attack.
Thanks in advance.
Frank