My System:
Mac Pro 8 Core 2.26 GHz
12GB ECC Ram
GTX 285 , GT 120
3x1TB Caviar Black (OS 10.6.2*), 1x640GB (Windows 7)
*Software is up to date !
Audio Hardware:
Apogee Ensemble (Interface and Soundcard)
http://www.apogeedigital.com/products/ensemble.php
Apogee is a company which is working closely with Apple together on their Audio products
Problem:
Since I installed the Audio Update 1.0 for Mac Pro's early 2009 by Apple Software Update to solve the Audio Heat / Performance problem I have realized a high pitched noise / whistle sound.
When I turn on my Ensemble, I am getting a high pitched noise / whistle sound coming out from my Mac Pro. I think the source of the sound is somewhere around the Firewire inputs in the back of the Mac. I tried to locate it , but it is very hard. As soon I turn my Ensemble off, the high pitched noise is away !
- The noise / whistle is very good recognizable
- I have no problem with other external devices such as hard discs
- I could not locate the noise to an internal fan
- It does not matter if I playback music or not
- The high pitched noise is pretty constantly, but sometimes a bit quieter. And sometimes gone for just a second. But mostly constantly.
- It does not matter on which input of the Mac Pro I attach the firewire cable to connect the Ensemble
- I tried messing around with the Ensemble Software Settings (changing frequencies etc.) with no success.
- I reinstalled Apogee Ensemble Software Updates
- I reinstalled Apogee Ensemble Firmware Updates
- (edit) The noise still exists even when I plug the power adapter into another power source
When I wear my headphones and plug them into my Mac Pro it is dead silent. But if I turn on my Ensemble, I have the same frequency of a high pitched noise / whistle on my headphone output as my system does ! It does not matter if I choose the Ensemble for I/O or not.
I have a clean OS X 10.6.2 installation on an external HD. I booted today from this HD. I connected my Ensemble with my Mac and turned it on. I did not hear any high pitched whistle or noise.
I left my system with the ensemble running for about an hour and I did not hear any noises or whistles on the external HDD with OSX 10.6.2 without audio fix. So I downloaded the Audio Update 1.0 for the Mac Pro, which Apple has released last Thursday. After the successfully installation and restart, the high pitched noise was there again.
Does anybody experienced this with his external audio interface / does anybody else own a Apogee Ensemble with a 09 Mac Pro ?
edit:
Here is the "UNDO" for reverting the audio patch 1.0 :
http://rapidshare.com/files/354706662/UNDO_Audio_Fix_1.0_Update_by_Apple.zip
Containing:
- Two .kext files (AppleHDA/IOPlatformPluginFamily) for 10.6.2
- Two .kext files (AppleHDA/IOPlatformPluginFamily) for 10.6.2 with Audio Update 1.0
- Kext Helper b7
- Tutorial
So you can change the files anytime you want.
Thread on the Apple Discussions Forum about the same problem - Other Interfaces seem to make the same effect :
http://discussions.apple.com/thread.jspa?threadID=2339757&tstart=0
Noise (video 720p):
http://www.youtube.com/watch?v=oXOgHpcqqNo
Noise (audio):
Mac Pro 8 Core 2.26 GHz
12GB ECC Ram
GTX 285 , GT 120
3x1TB Caviar Black (OS 10.6.2*), 1x640GB (Windows 7)
*Software is up to date !
Audio Hardware:
Apogee Ensemble (Interface and Soundcard)
http://www.apogeedigital.com/products/ensemble.php
Apogee is a company which is working closely with Apple together on their Audio products
Problem:
Since I installed the Audio Update 1.0 for Mac Pro's early 2009 by Apple Software Update to solve the Audio Heat / Performance problem I have realized a high pitched noise / whistle sound.
When I turn on my Ensemble, I am getting a high pitched noise / whistle sound coming out from my Mac Pro. I think the source of the sound is somewhere around the Firewire inputs in the back of the Mac. I tried to locate it , but it is very hard. As soon I turn my Ensemble off, the high pitched noise is away !
- The noise / whistle is very good recognizable
- I have no problem with other external devices such as hard discs
- I could not locate the noise to an internal fan
- It does not matter if I playback music or not
- The high pitched noise is pretty constantly, but sometimes a bit quieter. And sometimes gone for just a second. But mostly constantly.
- It does not matter on which input of the Mac Pro I attach the firewire cable to connect the Ensemble
- I tried messing around with the Ensemble Software Settings (changing frequencies etc.) with no success.
- I reinstalled Apogee Ensemble Software Updates
- I reinstalled Apogee Ensemble Firmware Updates
- (edit) The noise still exists even when I plug the power adapter into another power source
When I wear my headphones and plug them into my Mac Pro it is dead silent. But if I turn on my Ensemble, I have the same frequency of a high pitched noise / whistle on my headphone output as my system does ! It does not matter if I choose the Ensemble for I/O or not.
I have a clean OS X 10.6.2 installation on an external HD. I booted today from this HD. I connected my Ensemble with my Mac and turned it on. I did not hear any high pitched whistle or noise.
I left my system with the ensemble running for about an hour and I did not hear any noises or whistles on the external HDD with OSX 10.6.2 without audio fix. So I downloaded the Audio Update 1.0 for the Mac Pro, which Apple has released last Thursday. After the successfully installation and restart, the high pitched noise was there again.
Does anybody experienced this with his external audio interface / does anybody else own a Apogee Ensemble with a 09 Mac Pro ?
edit:
Here is the "UNDO" for reverting the audio patch 1.0 :
http://rapidshare.com/files/354706662/UNDO_Audio_Fix_1.0_Update_by_Apple.zip
Containing:
- Two .kext files (AppleHDA/IOPlatformPluginFamily) for 10.6.2
- Two .kext files (AppleHDA/IOPlatformPluginFamily) for 10.6.2 with Audio Update 1.0
- Kext Helper b7
- Tutorial
So you can change the files anytime you want.
Thread on the Apple Discussions Forum about the same problem - Other Interfaces seem to make the same effect :
http://discussions.apple.com/thread.jspa?threadID=2339757&tstart=0
Noise (video 720p):
http://www.youtube.com/watch?v=oXOgHpcqqNo
Noise (audio):