[Les Cargill[_4_]]

wrote:
Unless the recording gear and pa gear are connected to the same
ground, i'm gonna bet that you NEED transformer coupled galvanic
isolation to avoid ground loop problems.

Mark


That is what I am thinking.

--
Les Cargill

[Scott Dorsey]

Les Cargill wrote:
wrote:
Unless the recording gear and pa gear are connected to the same
ground, i'm gonna bet that you NEED transformer coupled galvanic
isolation to avoid ground loop problems.

That is what I am thinking.

65 volts AC measured between the PA system ground and the truck ground at
the 9:30 club.

Box of UTC G-series transformers, wired 600 ohm primary to two 600 ohm
secondaries.

No audible hum.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."