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While I am typically able to troubleshoot my own technology problems, I am at a loss here. I have been recording for a couple of months, and I have a PreSonus Audiobox USB connected to my MacBook with Logic and a CAD M179 condenser microphone. As of yesterday, the audio coming into the Macbook is very quiet, and the only way I can hear my vocals is to move the volume slider for a given track all the way up to +6.0. As of two days ago, I was had to turn down the vocals because they were too loud at zero.

So, I'm not sure if something is broken or I'm just doing something wrong. Another thing I noticed is that through the headphones I have plugged into the rear of the Audiobox, I experience a lot more latency than I did previously. Instead of monitoring myself in real time, it's delayed by more than two seconds.

Any help would be greatly appreciated, as I am not that experienced with audio hardware. Thanks in advance!

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Boswell Fri, 10/28/2011 - 09:13

Has the attenuator switch on the mic suddenly and mysteriously set itself to the 20dB position?

When using the mic, do you hear yourself normally in the headphones when the "mix" control on the Audiobox front panel is turned all the way to "Inputs"? If so, it would indicate your problem is in the interface section or Mac software.

What audio software are you using for this operation? Is it Garageband?

Boswell Mon, 10/31/2011 - 08:44

thorow, post: 378171 wrote: I just tried Garageband, and turned the non-vocal track all the way down. I am only getting audio from the left-earphone. Could this be part of the problem?

This happens in Logic as well, but not when the headphones are plugged directly into the computer.

That's proabably correct if your non-vocal signal was connected to only one Audiobox input. Try it now on the other input. If the monitoring switches to the right earphone, both Audiobox channels are working and it's looking like you have a fault with your microphone or mic cable. Shorted-out phantom power on one of the mic cable connectors can give this type of trouble.

Boswell Wed, 11/02/2011 - 05:26

thorow, post: 378418 wrote: I switched inputs and it works just as it did before the problem occurred, except it's on input 2. Audiobox problem?

Possibly, but it's been difficult from your posts to follow exactly what works for you and what doesn't work.

Is the problem repeatable by switching back to the original channel?

Are you still getting the 2-second delay or the "whispering at a distance" in the monitoring?


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