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Old 01-02-2006, 08:40 PM
smsjr smsjr is offline
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Location: MA, USA
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Default Noise Blast from MBox on G4

I know that similar problems have surfaced on these boards, but I'll lay out my scenario. I have been using my MBox with a Mac Mini, sort of a portable system that has saved me from lugging around a tower. Things have worked out nicely with that setup.

But when i try to use the MBox running PTLE 6.9 on my G4 Dual 1ghz running OS 10.3.8, I get horrible noise blasts (white noise, crackles) at very high decible level. I've tried all of the mac maintainance I could think of, trashed Digi prefs, all the usual stuff. This problem was there when I tried to do this initially when i first got my MBox. I gave up and just used it on the Mini. I can't figure out what is causing this. I was able to mix the spot I was working on, but as soon as I went to bounce it, the problem showed up and now it is there, even when i just try playing my tracks. Very odd problem, and potentially dangerous too. The level of this noise was quite loud.

I'll be in touch with Digi support tomorrow, but if anyone has experienced this and has found a solution please let me know. By the way, this was a very clean installation. No Pro Tools on this volume before today. So, reinstalling probably isn't the cure.

Thanks,
Steve
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Old 01-02-2006, 09:28 PM
smsjr smsjr is offline
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Default Re: Noise Blast from MBox on G4

I switched the USB connection to a separate PCI USB card to see if that would aliviate the problem, but same result. Getting frustrated by the moment. Ugh!

Don't understand why such a terrible sound is being generated. I even disconnected my Dorrough meter from the MBox (it worked flawlessly on the Mini) and that didn't make any difference.

Steve
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Old 01-03-2006, 01:53 AM
Slim Shady Slim Shady is offline
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Default Re: Noise Blast from MBox on G4

Does it go away if you switch the playback buffer size in the playback engine dialog? The white noise burst is common in PT7 but is alleviated by switching buffer settings - even just switching it to something then changing it right back is usually enough to alleviate it (during that particular launch of PT anyway).
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Old 01-03-2006, 09:37 AM
smsjr smsjr is offline
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Default Re: Noise Blast from MBox on G4

I tried that and it did the same thing, although it got further into the bounce down before going haywire.

Thanks,
Steve
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