M7CL poping?

[TMJRecordings]

Hey Guys,

Here is what I got, I am running a Presonus Firestudio with the direct out from my M7CL ADAT card out on slots 2 and 3. That gives me 32 in and out. I am running an SM pro as my work clock out at 48K and then out of my M7 work clock out into my Firestudio. Then I have my PT 9 session at 48K and every so often I am getting digital pops. Not sure were it is coming from. Everything is set to 48k everywhere. All my ADAT cables seem to be seated ok, so I am kinda at a loss. I have a 2007 Mac Book Pro with 4 gb of ram, 10.6.2 on it. If anyone has any other ideas let me know. I may have to just go back to 44.1K
Thanks
Tim

[Dirt_]

Is the laptop struggling to keep up possibly?

[TMJRecordings]

CPU is 2% and disk is 18% or so. I didn't see the CPU spike. I know how sometimes it can just shoot up but I was looking and I didn't see it jump. And it's not all the channels at the same time either.

[Dirt_]

Well for what it's worth, whenever we use our M7CL's we use an external clock for better sound... I'm wondering if there is some kinda clocking error stemming from the Yamaha. They aren't known for their excellence!!

[Obsidian Dragon]

Most of the time digital pops and clicks are due to timing issues but it sounds like you've checked those already.

The second common cause is that the computer is not keeping up. You didn't mention if you were using an external firewire drive or not. If not, you might try that and see if the problem goes away. If you are, make sure you are not mixing FW800 and FW400 on the same firewire bus.

Finally try setting your playback engine to use one processor core instead of two to leave one available to handle non realtime RTAS processing and other system chores.