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Scott Dorsey Scott Dorsey is offline
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Default Digital noise from speakers in flight simulator (X-Plane)

John Doe wrote:

Are you saying that the difference between a "balanced" and an
"unbalanced" connection can be made simply by the cable used?


No. However, if you have a _differential input_ that is intended for a
balanced source, you can use the differential input to break the signal
ground connection effectively and eliminate the ground loop.

In other words... An ordinary stereo output from a PC soundcard can
be balanced by simply using XLR cables?


No, because the output is still not balanced. However, you CAN still
use the differential input to break the ground connection.

There is a discussion of this stuff on the Rane website, also a very
good one in the Yamaha Sound Reinforcement Handbook.

I like balanced.


It's nice, in part because you can break grounds with impunity then.

A new power supply arrives today or tomorrow. Will see whether it
helps. The idea that increased power draw might cause the problem is
logical.


It's likely to reduce some of the noise, but just fix the damn ground loop.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."