Bennett wrote:

I've got a Creative PC speaker, woofer and 5 tweeters. With inputs
disconnected I get a sort of intermittent whooshing or wind like sound.
The volume of the sound is not controlled by the unit's volume control.

Since this is coming from all the speakers, I assume - correctly? - that
the built in power supply is acting up. I assume the built in power
supply is some sort of switcher - would bad caps cause this noise?

Where else should I look. Thanks in advance
Some times a zorc circuit is placed at the output to halt possible
oscillation that can take place.

This usually consist of a capacitor and R in series.. optimized to
react at higher frequencies to maintain a lower lever of output Z.

Some amp circuits will go into oscillation with out this circuit and
you can hear all kinds of effects.


Jamie