Recognise the sound of this glitch? (003 recording issue)

[albee1952]

Originally Posted by Sounds Expensive

I have similar issues on my 002r. It starts with the same sound that was heard on the audio clip you linked to, then the input level gradually lowers and sometimes goes to zero. Sometimes pushing the 48v in and out several times fixes it or sending a burst of signal into the input.

The issues didn't resolve itself even through Pro tools 8, 9 and 10, various 002r drivers, different Mac computers, OS upgrades and different firewire cables and connections. And a while ago when I first experienced the issues, I sent it back to Black Lion Audio thinking it may have been an issue with the Signature Series Mod. When they tested the unit everything checked out fine and they sent it back.

Up until today inputs 1 and 3 worked fine, input 2 had extremely low input (roughly -60 dBFS when tapping a 57) even with the gain set full; and input 4 was intermittent with the same problem outlined above, regardless of the mic or input type and setting.

However, today I thought I'd try something different. I patched a mono output to input 2, using 1/4" TRS to XLR and then 1/4" TRS to TRS and sent a 2-track mix through at full volume including cranking up the preamp gain. I then went back to plugging in a 57 and tapping on it, all is normal. I have no idea what is happening electronically, but there it is.

Curious to know if anyone else has had this issue with the preamps on the 002 or 003, or if they have any insight on the above result.

Thanks!

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[Sounds Expensive]

Originally Posted by albee1952

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Help us Help You - READ THIS Before Posting!

iMac, 2.5 GHz Intel Core i5
OS 10.6.8
002r
Pro tools 10.3.6
4 GB 1333 MHz DDR3

OWC Mercury Elite-Al Pro external HD connected to iMac FW800; 002r connected to OWC HD FW400

acomdata external HD connected to the OWC HD FW800

all FW cables are 3-5 feet