Hi everyone

first off: Quad G5 (2.5 GHz), 2.5GB RAM, OS X 10.4.10, QT 7.2, XPress Pro 5.8.0, GeForce 7800GT

Looks as though there are 2 built-in sound cards (Crystal Semiconductor CS84xx and Burr Brown PCM3052).

And now the problem:

I have audio in a 30i project that is both 48k and 32k, set to convert at playback (to 48k project rate)

There is audio that was fine on capture that has suddenly taken on a stuttering, but really sounds more like people are endlessly rolling their Rs, machine-gun style.  It seems to be isolated to louder sounds, but it's all over the place.  Strange things - this audio was fine at capture, plays fine 1394, AND plays fine exported as AIFF-C (didn't try WAVE, why go on?).

So, troubleshooting leads me to believe this is a problem with the Mojo.  Can someone tell me if it's firmware? or just a faulty unit (I believe it's a couple years old at least).  Also, this is out of the 1/8th inch jack on the front AND the RCAs in the back.

Help please...I realize it's not an issue currently (might be when I lay-off, but planning to go digitally to DVD) but in the meantime it's excrutiatingly annoying to work with.

Many thanks,

Andy

This sort of problem is usually caused by something else being plugged into the Firewire bus that the Mojo doesn't like sharing.  Got a iSight, Firewire hub, a drive or anything plugged into one of the built in Firewire ports on that G5 (including the front port!)?  Is the Mojo plugged into a built-in port and the other stuff plugged into a PCI Firewire card?

do the Firewire 400 and 800 jacks share the same bus?  I moved an 800 cable to the PCI card, no change.

otherwise, everything is in a card on the PCI 4 slot, it looks like.  front jack is empty.

thanks, as always,

Andy

They absolutely do. IF you have a Mojo, you need an external PCI card for ay other FW devices.

Mojo goes into the built-in Firewire port on the computer.  EVERYTHING else goes to the PCI card.  Check the "Using Mojo" docs to see what slot the PCI card belongs in depending on the CPU.  If you use the wrong slot you'll end up sharing the same bus as the internal Firewire ports and we'll be continuing this thread...