I just got Eris speakers and woofer. My CPU has a USB connection to a U-Phoria UMC204HD audio interface. The UMC204HD connects to the woofer through TRS cables; the woofer then connects to the speakers with TRS cables.
As is a common complaint, the speakers pop when the computer is turned on. Then they pop again after the BIOS code runs. Turning off the computer causes more pops. The normal solution is to turn on the computer and then the speakers. When shutting down, reverse this.
The Eris monitor speakers have an easy to reach switch on the front. The woofer is under my desk with the switch on the back. Remembering to to turn them on/off in the right sequence is hard, but getting to the woofer switch is a pain, so I'm living with it. The pop might potentially be harming the speakers (although they aren't loud pops). Is there no better solution than manually flipping the switches? My computer is set to hibernate and so the pops often come with each use (I might not even be around when the power goes off).
Some enterprising soul thought he could put the speakers on a power strip with an on/off button. But the switches on the speakers are special—they switch the power off in the right way. Turning the power strip on or off causes the pops, so that's not a solution.
I suspect there is no good answer. It does seem a little crazy that there isn't.