Got it. I guess I'm looking for someone with 110 with this issue. I will know next week as mine is preparing for shipment.
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Possible coil whine in my nMP
- Thread starter tylmad
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I think that 220v is a red herring. The man who said he was using 220v was from Germany. Doesn't Germany use 230v @ 50hz?
It's been 220V back then. I think they have aligned the mean voltage supply across mainland Europe to 230V. I might try the stepper transformer suggestion.
Do you think this one would suffice?
http://www.bronson-electronics.co.uk/voltage-converters/bronson-vt-500-voltage-converter.html
Buy a second hand one off ebay. They are normally pig ugly, bright yellow and you can get your money back by relisting it. Used on building sites for 110v power tools.
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I could do that, but I can borrow this one for free from a friend
So, I'm hoping 500W is enough, or what do you think?
I could do that, but I can borrow this one for free from a friend
Perfect - Anand said it drew 438w maximum out of the stated 450w.
I'm on 110 and have the issue on D700 but only under certain loads. I don't find it too bothersome.
It will be interesting to see if the noise changes if you change the input voltage. I think I'll be able to try this today.
I wouldn't mind the whine under heavier load on the GPU's, a lot of GPU's does that, the NVIDIA Titan cards for example. This is however when idle all the way up to full load, headaches are guaranteed.
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I did some recordings on my first machine (the sound is the same on the second) if someone want's to hear how bad mine are.
http://pixelsinlove.se/temp/Coil_Whine_Mac_Pro_2013.zip
Looking forward to your report tylmad! Thank you. Too bad that people with 110V are reporting the same
It's definitely slowly massaging my synapses. Maybe I have to go back to wearing my IEMs the whole day again.
I have ordered a replacement from Apple and will see how it goes. It might take some time and I don't want to cut in line. At least I can keep my current machine until the new one arrives and I'm ready to send it back. If the new one isn't better, it's going straight back while keeping the current machine.
Why not? You should cut in line, I got a new one in one week, including shipping (which means I can still return it and get my money back). I'm very sensitive to these kinds of sounds so if it's a manufacturing defect that affects all machines I will have to pass on the nMP
Looking forward to your report tylmad! Thank you. Too bad that people with 110V are reporting the same
It's definitely slowly massaging my synapses. Maybe I have to go back to wearing my IEMs the whole day again.
I have ordered a replacement from Apple and will see how it goes. It might take some time and I don't want to cut in line. At least I can keep my current machine until the new one arrives and I'm ready to send it back. If the new one isn't better, it's going straight back while keeping the current machine.
Would be interesting if the 110v users tried a step up 220/240v transformer likewise.
The nMP I setup had no problems at all though I'm possibly a bad candidate to listen to these kinds of noises largely cos I have my own personal whine - tinnitus
Internal speaker?
Just throwing this out there - could it be the internal speaker? See if it's possible to unplug it, and see if it's possible to unplug the system fan. I read through this thread and I didn't see the speaker mentioned but it's late and I may have missed it.
Just throwing this out there - could it be the internal speaker? See if it's possible to unplug it, and see if it's possible to unplug the system fan. I read through this thread and I didn't see the speaker mentioned but it's late and I may have missed it.
Sounds (no pun intended) like a stretch, this sounds is so familiar to me, both from computer building in general and crappy electronic devices. I guess most low end speakers (like the internal one) wouldn't be able to produce the frequency at all.
Why not? You should cut in line, I got a new one in one week, including shipping (which means I can still return it and get my money back). I'm very sensitive to these kinds of sounds so if it's a manufacturing defect that affects all machines I will have to pass on the nMP
I'm gettting a replacement courtesy of Apple. No payment involved. They let me keep the old one until the new one has arrived and I have moved my data. Sounds fair to me.
Looking forward to your report tylmad! Thank you. Too bad that people with 110V are reporting the same
It's definitely slowly massaging my synapses. Maybe I have to go back to wearing my IEMs the whole day again.
I have ordered a replacement from Apple and will see how it goes. It might take some time and I don't want to cut in line. At least I can keep my current machine until the new one arrives and I'm ready to send it back. If the new one isn't better, it's going straight back while keeping the current machine.
Just tried the nMP with 110V, the noise was completely unchanged.
Just tried the nMP with 110V, the noise was completely unchanged.
Then I'd do exactly what saschke has just done and arrange for a swap replacement
I got this feeling if you can hear it they all will do it and a replacement won't help as it is part of the design. Mine is coming Monday and I am 100% confident it will do it. If so Im not going to request a replacement. If it annoys me I will either return it or wait until Apple fixes the problem in production. Im pretty sensitive to things like scan lines and noises. At work there is this high pitch noise in the area where I sit and I mentioned it to the others and they can't really hear it but it bugs me.
It's seems to me like a component problem related to a coil and power supplied to other parts like the GPU boards. I would demand replacements till you get one that's silent!
Can't Apple cross ship a replacement? I.E let you hold yours until the replacement comes. They cooud ship it to the store or to your home with a CC authorization.
I got my replacement ahead of sending in my old one. TNT picked up my first machine today, still waiting to hear back from Apple on how to handle the second one. They're not keen on sending a new one when they don't know what the problem is.
If you want a replacement just tell them to put you ahead in line, absolutely no reason for a customer who received faulty hardware to wait for months to get a replacement. Their priority system really works too, as I said before, you get a new one from Texas within in a week.
If you want a replacement just tell them to put you ahead in line, absolutely no reason for a customer who received faulty hardware to wait for months to get a replacement. Their priority system really works too, as I said before, you get a new one from Texas within in a week.