High pitched noise from analogue outputs

J-S-Q · Member Joined: 31 Jan 2005 Posts: 366 Location: London

I have just got an MR816 CSX and I am getting a very high pitched sound coming out of both my sets of monitors connected to 1-2 and 3-4 analogue outputs. The sound is present as soon as I switch on the unit, even with the MR Editor volume faders all the way down and the amp volume controls set to zero. I have tried connecting the MR816 to my Macbook and there is no high pitched noise, the problem only occurs on my Win7 desktop.

Could this be some kind of earthing problem? The sound is always present but you can sometimes here it change in response to the activity of the computer -almost as if it is picking up noise from the hard drive or CPU activity.

The motherboard is a Gigabyte GA-EX58-UD5. I just read on another thread that there may be problems with this motherboard and an MR816 but no details were given. Does anybody know anything about thus?

Thanks.
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MacBook Pro 2.4, 10.5.2, Cubase 5, Apogee Ensemble.
Intel i7 920, Gigabyte GA-EX58-UD5, Gigabyte GV-N96TSL-512l, 6GB Corsair Dominator DDR3, Windows 7 64Bit, Cubase 5 32Bit, Steinberg MR816 CSX

J-S-Q · Member Joined: 31 Jan 2005 Posts: 366 Location: London

Well I plugged the firewire cable into the front panel socket instead of the rear socket and the noise has gone! Don't understand why but the problem is solved anyway.
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MacBook Pro 2.4, 10.5.2, Cubase 5, Apogee Ensemble.
Intel i7 920, Gigabyte GA-EX58-UD5, Gigabyte GV-N96TSL-512l, 6GB Corsair Dominator DDR3, Windows 7 64Bit, Cubase 5 32Bit, Steinberg MR816 CSX

midimajor · Posted: Wed Nov 10, 2010 7:54 pm Post subject: Same thing here!

Same thing here with my iMac. Don´t have another FireWire-Port to switch, think I´ll try to put a external hard drive between the signal way. Will see what happens...

theextravaganttraveller · New Member Joined: 04 Nov 2009 Posts: 8

Anyone have any luck with this? Just got the MR816 today, I can swim in the white noise coming out (not so much a high-pitched whine...). Noisy even at 0% master, at 50% unusable. Muting input channels in the software mixer seems to help a little, but overall this is unacceptable for a unit in this range.

On iMac and plugging into the only available FW port on the back. I've tried running it on different circuit, off-battery - no luck.