clipping sound on new iMac when Logix X is running

Running mavericks amazingly!

No problems with it at all! Madness!

also.. If your using Logic, need to get this information directly to the logic Pro X team asap

Fill out one of these feedback forms

http://www.apple.com/feedback/logic-pro.html

(which can also be found in the menu of Logic Pro X>Provide Logic Pro Feedback)

Thanks

Brand new iMac 27 with Fusion Drive 3T and exactly the same problem everyone is reporting. Fuzzing and distorted noise after a few minutes (or even seconds) of using my Apogee ONE while recording sound.

I'm using the latest drivers from Apogee Digital for OSX 10.9.

I have a duet firewire yet to be tested but I fear the same will happen :/

Hello poinggo.

Do you have other stuff connected via USB?

I'm asking this because having the same problem I noticed that the problem was more severe when connecting all my usb (2) stuff to the computer. I have the problem even just using internal audio and speakers, even with itunes.

Hope they will find a solution. I sent back my iMac 27 fd but I'm they will replace it with an identical unit.

Hey!. Besides the Apogee ONE, only the Apple Keyboard and wireless logitech mouse.

It would be a shame if I had to return my iMac as it's blazing fast! But I can't live without being able to record some music. That's part of the reason I went for the 3T disk.

I was just about to purchase an iMac with the 3TB Fusion Drive. Are there are any downsides to just putting in a regular 3atB SATA instead? I'm using it primarily to run Logic.

Also, what is the best method to copying over my current iMac 1TB drive to the new iMac without having to reinstall about 900 GB of samples and programs?

If you read this topic you know there is no advantage to using a Fusion drive for audio work.

I am using a Presonus AudioBox 22vsl USB AI and seem to have a slightly different problem. As long as all Presonus software, drivers, prefs, etc. are removed, it works perfectly for about 20 minutes then a severe stuttering of the output begins to build until it shuts down. The temp fix is to reset audio and get another 20 minutes but this won't work for doing recording sessions.

Although the impact is primarily on Logic because I don't need an AI for other apps I use, the problem is there no matter if Logic is running or not. As long as the AudioBox is plugged in the stuttering will start after 20 minutes.

My gear is iMac 27 i7 1TB Fusion.

I have a ticket into Apple and a ticket into Presonus. My bottom line question is do I send back this iMac and order one without the FD? Is the FD the problem or is it something else, Mavericks or USB3?

Is there anyone with a new iMac without a FD that is problem free? My 90 day return time is counting down and I would love to know what to do. Both Apple and Presonus are dragging they're feet here.

Hello all

Spoke with focusrite and apple pro apps support again re issue and pops etc

Firstly focusrite state the the problem is with apple hardware after testing there setup again and they are submitting a bug report to apple . So that's that

Apple pro apps support in UK do accept there is an issue here in uk with new imac but said it was more likely to be USB hardware or controllers and not the fusion drive as they have had same problems with standard hdd setups, they are submitting all the uk cases to developers and senior technicians at apple HQ.

So things are progressing behind the scenes it seems

The pro apps guy ask me too run my imac using LPX with the inboard sound card without my focusrite 2i4 and I have done this today for four hours WITHOUT any pops or glitches but I did have logic quit during the four hours. During test ran a song playing in virtual instruments and drummer plus some recorded audio from guitar recorder at an earlier time.

Seemed stable ... Although no midi to trigger my out board keys, used ipad remote as a keyboard and mixed with that also.

Thanks

TY Clandestyne.

I will get the extended warranty and I will send my 1TBFD back and get one without a FD since there are no advantages having a FD when recording audio. The only thing that will change that plan is Apple putting out a fix early next week. Somehow I doubt that will happen. Note to self, never buy a brand new release no matter how much I think I need it.

To be honest..

I am thinking if they don't sort out this issue then I will be asking Apple to swap the iMac for a Base model MacPro for the trouble and get a screen for myself. This amount of downtime on a machine that is promoted at running Pro Apps is so frustrating. We are all hoping that we wake up and the next day a fix is waiting to be downloaded but how long that will be is unsure.

Ok, fair enough they have to have time to test and fix but this shouldn't of happened in the first place in my opinion.

Sigh..

Ok.. Rant over.

Just an update.

Yesterday I got another Imac 27 i7 FD as a replacement from the original. Identical issue still there. After about 30/40 minutes of listening music through Itunes the audio starts stuttering heavily.

After some tests with my hardware I found that the best results (just a few cracks/pops every now and then) I have them when I plug in the apogee duet (with maverick fw update) directly in the mac and all the other stuff (Mackie mcupro, drives, keyboards) connected through what appears to be a solid USB3 hub by Orico that I bought the other day, I was previously using a USB2 hub.

Now I have 10 days to decide if to give back the Imac and get a refund or keep it hoping in a fw update from Apple or something. Maybe I could get a SSD version or a standard drive. Really don't know.

This whole thing has been so time consuming.

Ciao

So, is the problem the USB hardware (running a USB 2 AI into the USB 3 ports) or the Fusion drives? Do you think something like that would be a simple firmware upgrade or do you think there is something wrong with the hardware that would need replacing?

I'm about to pull the trigger on an new iMac and am holding off for the time being.

Hi. I'm in no way a tech so I could be totally wrong but I did notice also on the previous imac (the one I sent in to be replaced) that the presence or not of usb stuff connected to the iMac would affect the severeness of the audio problem.

So, out of ignorance, I bought the USB3 hub with the intent of trying to "clean/sanitize" up that area.

Apparently this does have an effect as with all my usb2 stuff going through the new hub (which is USB3, has a USB3 cable but has ports compatible with usb2 and usb1.1 ) the problem is minimized. At least on my setup.

Really don't know if this is the problem and if it could be fixed through software or hardware.

I think holding off a bit to see what happens is the best strategy.

Sorry for the "stuttering" english. :-)

Ciao